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This is NOT the HomePage. The HomePage accesses many things, including some articles, NOT accessible from this Technical Articles List page. Going from the HomePage to the Technical Article List page, using the clickable link at the bottom of the HomePage will ALWAYS give you the LATEST version of any article; thus, I suggest you "bookmark" ("Favorites") the HomePage & NOT the page you are looking at right now! The HomePage is: http://bmwmotorcycletech.info/index.html
This site is certified by Google to be "mobile friendly".
Animation by Mo Massen; furnished to me by Alessandro Zorat
Covers the 1984 R100RT & the above 1995 R100RT
that replaced it.
Snowbum, by early 2015, had ~650,000 miles on BMW motorcycles
1952, January ...There's a road here someplace!
Technical information on this website is
Internet mailing LISTS, Groups, Airheads Club & website:
New to Internet Mailing Lists? Especially if new to BMW motorcycle riding, riders & E-mail; ... click & read the short article: http://bmwmotorcycletech.info/bmwpeople.htm
Airhead is slang for a BMW boxer (two-cylinders, opposed) air-cooled motorcycle manufactured between December 1969 (the /5 series) and the end of its production in 1995-1996. "Airhead" does NOT include other opposed cylinder twins.
Please post technical inquiries to the Airheads LIST regarding Airheads; and NOT directly to me. In this way, your questions (& answers which may come from several sources on that LIST, and not just me), will help more than just you. This helps me, as the amount of time I used to spend on individual replies was huge. I need time to eat, sleep, and have a life!If you insist on contacting me directly for help, I have a page for that: Direct Inquiries
The clickable link, http://www.airheads.org, the Club's website, shows how to join the Airheads CLUB. The website contains many things, including numerous technical articles, some of which I wrote. Try not to confuse that website with the Airheads internet mailing LIST. Probably a majority of Airhead owners in the USA are members of the Club (Airheads Beemer Club, or ABC), and also members of the E-mailing LIST. When you are a paid member of the CLUB, you receive the monthly printed-in-color-on-paper publication, AIRMAIL. You can join the CLUB on that site; or, obtain a snail-mail form, copied from the last page of the monthly Airmail, from a Club Member. The old website has been completely overhauled and totally updated, and now includes FORUMS. Snowbum does not like Forums, and usually does not participate, but Snowbum DOES write articles for the Technical Tips section, a subsection of AIRLORE.
E-mailing LISTs are primarily for immediate, personalized technical information, although there are some that are specifically for social discourse. You can get information on the AIRHEADS internet mailing LIST by going to the following URL. Snowbum is a Moderator/Administrator on this LIST. Micapeak.com does NOT spam you; does NOT sell or otherwise pass out your E-mail address; does NOT put advertising into your or other folks E-mail messages.
Join here: http://lists.micapeak.com/mailman/listinfo/airheads
I, Snowbum, hang out the most on that Airheads LIST, WHICH IS COMPLETELY FREE TO USE.
Hint: Put email@example.com into your computer E-mail address book, perhaps using a nickname such as "Airheads"; so you don't have to type the full address when YOU want to post a message. Most E-mail programs can do this. If need-be, set your program to accept LIST messages. You will post and receive mail to/from: firstname.lastname@example.org. I also suggest you put a signature line, with your E-address at least, and perhaps your general location, and perhaps a year and model of your Airhead, at the bottom of each message.
Hint: I suggest you set your outgoing messages, for the particular LIST or
FORUM, for PLAIN TEXT. You cannot post HTML (images, colors, etc.) to the Airheads LIST. Your message size is limited to 100Kb. To post images, use any of the common FREE (no sign-up needed) image posting sites for your image(s), and put a LINK to that image in your message to
Airheads LIST Archives: http://lists.micapeak.com/archives/airheads/login.php
ALL Micapeak.com lists archives: http://lists.micapeak.com/archives/select.php
NOTE! The archives are searchable by date, poster, subject, ETC ETC. You will need your name and password that you used to subscribe to the LIST.
Airheads LIST options: http://lists.micapeak.com/mailman/options/airheads
A wee bit of a rant:
I am aware that Facebook groups DO have a way to search for past discussions on some topic, or even a poster's name. Near the top of your group's page, look for the small box with a magnifying glass symbol. Type the word or words, briefly, into the box, and press ENTER, or whatever your method will be. Still, Facebook is, in some respects, an ongoing catastrophe, and will be getting worse. I, Snowbum, MAY, in the future, drop ALL of my Facebook (and other social media) involvements.THE major sidecarist's LIST is https://groups.yahoo.com/neo/groups/SCT/info. Snowbum is active on that LIST, and is a Moderator. It is sometimes very quiet. The SCT in that address stands for SideCarTalk, just how the LIST was originally named. The LIST is primarily technically oriented.
You may be interested in this page: https://www.facebook.com/freedom.sidecars A number of sidecarists hang out here, and this is the page for Claude Stanley's Freedom Sidecars, a custom sidecar shop, which, for years, has been doing high quality work.
Technical LIST for EML sidecars: http://groups.yahoo.com/neo/groups/EML_SCL/info.Snowbum is active on the LIST, & is a Moderator. This low noise and typically quiet list is primarily technically oriented. The SCL in that address stands for SideCarLounge, being just how the LIST was named.
Western USA branch of the United Sidecar Association:
It is primarily for Western USA chit-chat, places, people, events, etc. It tends to be VERY quiet, almost defunct now. If you are a sidecarist, or potential sidecarist, and live someplace west of the Rocky Mountains, you might want to post here, besides other places.
A LOT of sidecar technical information on that website that is FREE. Be sure to download, or at least read, the three articles/books on that site furnished to the USCA by the late Dr. Hal Kendall: how to set up and drive a sidecar rig, ETC. (LOTS of ETC!!).
Click at the top at Links and Books, then click on Books & Manuals.
Internet-based FORUM for the K1200 & K1300 series:
http://www.k-bikes.com Snowbum does not participate.
There is a K11 owners group list. The site is usually quite active in its FORUMS section.
http://IBMWR.orgSometimes known as "The Big LIST", this Internet BMW Riders website covers all BMW motorcycles, with lots of technical things: http://IBMWR.org. Snowbum monitors & sometimes participates on the IBMWR tech list, which you can sign up for, on the website. There is a FREE marketplace on that site, and catalogued technical articles. Be cautious about what technical advice/information/articles you see and use ...some are not good.
http://bmwsporttouring.comOilheads, Hexheads, Camheads, K bikes; and, generally, any BMW rider into sport touring. Snowbum does NOT monitor nor participate here.
Some other important LISTS and FORUMS are shown in this Technical Articles List page in the K bike or Oilhead areas.
http://bmwmoa.orgBMW Motorcycle Owners of America (BMWMOA) has forums on BMW products since BMW began, right up to the present moment. You must be a member to access and participate fully. Snowbum participates on the BMWMOA Airheads FORUM now and then ....but, take that to mean RARELY.
The information on this website is provided at no cost and without any warranty whatsoever. It is my personal information & opinion, which you may use at your own discretion, for personal use only. Your usage does NOT make me liable for any problems. Improperly maintained motorcycles can lead to serious injury or death or unavoidable accidents. I am not responsible for any errors contained herein, and I make no legal claims whatsoever as to the safety, validity, or veracity of the information contained in these documents. Any use of the information contained in/on this website, that leads to any work you choose to do or not to do on your or anyone else's motorcycle is done at your own risk. If you do not know what you're doing, take your motorcycle to a reputable shop with skilled professional mechanics. The instructions & information contained on these various pages merely document how the author may ....or may not ....do his own maintenance.
Copyright and Plagiarism information:
MOST of the articles on this website are copyrighted. ALL ARTICLES WRITTEN BY ME AND LISTED ON THIS PAGE, OR LISTED/SHOWN ON OTHER PAGES, OR OTHERWISE ON THIS WEBSITE, ARE COPYRIGHTED, UNLESS OTHERWISE SPECIFICALLY NOTED. My copyright exists whether or not you see the © copyright symbol or statement.
Website pages MAY show a copyright date at the top, and/or near the bottom. These dates are NOT necessarily the date that the original article was copyrighted by me. You are granted use of my website pages for yourself, as printed or electronic copies. You are also granted approval for incorporation by reference (or hyperlink to my articles) for many other uses. You must not abridge, modify, shorten, or otherwise edit my articles, unless it is made clear that you are doing so, & YOU THEN MUST prominently note any change in INTENT, or INFORMATION. You are NOT granted permission to DUPLICATE my articles, in part, or entirety, without prior permission from me, except as above noted. Commercial duplication; or, editing, publishing, or sales in any manner the content or part-content of my articles; and/or failure to quote me as the source/author, use of plagiarism, etc.; including other commercial activity, beyond what is specifically herein allowed without specific permission, will result in public announcement of same; and, if you do not cease & desist, will LIKELY result in prosecution under the laws of the United States; and other nations. These are NOT idle threats, I HAVE legally gone after those who plagiarize & misuse my written articles; including for monetary damages & lawyers fees. I'm VERY protective of my articles ...but I will usually grant you usage even beyond just for yourself ...so, ask!
One of the things that REALLY ticks me off is misquoting or partially quoting me in a way that changes meaning. I usually publically correct such.
What makes me MUCH MORE feeling like I want to (and WILL) be nasty ...is to find someone has modified my articles, or parts of them, & then claims them as their work. Plagiarism is what this is called. THAT PERSON IS STEALING FROM ME. Note what I said previously, above. I WILL pursue LEGALLY for MONETARY & other damages, and I will do it to the absolute maximum the Court allows, unless that person both corrects and apologizes, publically. This is NOT an idle threat!
On purpose I do not make money off my articles (except if someone clicks on Google Ad-Sense advertisements), and I don't want you to make money off my articles either. I do not want you copying my material to disc or other media, and then selling them, even at cost for just the media materials. Keep in mind that I update my website constantly. Only the latest on-line version is going to be accurate and up-to-date. Providing outdated information by you, or anyone else, is BAD, so I "go after" those folks.
You do NOT need my permission, if you follow the preceding, to use my TECHNICAL material in many ways, but if you have any questions, you may e-mail me:e-mail I try to allow YOU the widest reasonable use of my articles & content. The rest of this Copyright section explains things in a simpler fashion.
CREATIVE COMMONS are two words that describe a way for a Copyright Holder (that's ME!) to grant YOU permission for MY WORK to be copied, distributed, or adapted ... IF ... certain conditions are met. Conditions can include 'Some Rights Reserved'. So, to keep this simple: You may use my work if you keep my name prominently with my work; and, you, at a minimum, LINK to my original work (and prominently note/show ANY modifications or additions or comments by you or anyone using your copies, etc., as being from other than me, and such are prominently displayed). Such must not be misleading to those who might read or see my material. You may use my material ONLY for non-commercial purposes, unless you have MY permission for each instance. Creative Commons does NOT grant you unlimited rights.
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CLARIFICATION: If you have a website, & your page where you have placed something from MY website, and so acknowledged (or a hyperlink to my website, which is always appreciated!) has advertisements that provide you income if folks reading your website click on those ads, I DO NOT, in most situations, consider your webpage to be commercial use of my material, so I do NOT restrict your use of my material on such a page, so long as your usage is within what I have stated in my Copyright and Creative Commons information sections.
I frequently update articles on this website. This is important if you use a search engine that saves pages for faster loading, & doesn't update pages until they are next scanned; and who knows when that is (no matter the coding I use to have to try to get their robots to do it more often and to restrict caching). BEWARE of your computer 'caching' copies. Using a refreshed mode may be your best solution (just press F5 on Windows when the page you are interested in is displayed).
An OLD scan MIGHT or MIGHT NOT be from 'cached, or even listed as 'cached'. It is best to go directly to this website's HomePage and from there go to the Technical Articles List page. Press F5 on each page being looked at.
The HomePage contains access to MANY things NOT on, nor even accessible, from this Technical Articles List page you are now looking at. Going from the HomePage to this Technical Articles List page (via the link near the bottom of the HomePage) will, 100% of the time, give you the LATEST version of any article by then finding and clicking on it, and then pressing F5. Please pay attention to what I am saying in this paragraph. I suggest you Bookmark ('Favorites') the HomePageand NOT the page you are looking at right now. Click HERE: http://bmwmotorcycletech.info/index.html and bookmark (favorites) THAT URL when it is immediately displayed.
AS NOTED: YOUR BROWSER may cache an OLDER page from this website! If there is ever a question about having the latest version of one of my pages/articles, I suggest you 'refresh' the browser when it is on the page of interest to you. This is done in various ways depending on your computer. If you are using Windows, simply tap the F5 key once, on any such page. If you are doing something especially or likely critical to your motorcycle, please consider this strongly.
Revisions dates are 'usually' shown at the bottom of nearly all pertinent articles and are also shown in this Technical Articles List Page. I MAY make minor revisions withOUT changing dates. That is just one more reason to use the HomePage entrance, as you ALWAYS get the latest version that way.
Please post technical inquiries to the Airheads LIST regarding Airheads; and NOT directly to me. In this way, your questions (& answers which may come from several sources on that LIST, and not just me), will help more than just you. This helps me, as the amount of time I used to spend on individual replies was huge. I need time to eat, sleep, and have a life! If you insist on contacting me directly for help, I have a page for that: Direct Inquiries
Our bikes are getting quite old. The oldest Airheads (Airheads began with the 1970 models) are now officially regarded as ANTIQUES. You can NOT rely on just any BMW dealership (SOME ARE VERY GOOD) for repair work, not even for the proper parts and parts numbers. Dealership personnel may well NOT have the proper knowledge nor background. I suggest you strongly consider independent repair centers, especially ones that participate on LISTS & FORUMS. Be cautious about SOME folks, INCLUDING independents, that put videos on such as YouTube. I have a list of Independents that I approve of. I DO recommend certain shops & individuals, upon request. Especially see my Articles # 78 and # 78A, below.
BE CAUTIOUS ABOUT WHERE YOU GET WORK DONE, WHERE YOU PURCHASE PARTS, EVEN IF FROM BMW DEALERSHIPS! CHECK MORE THAN ONE SOURCE FOR INFORMATION, PARTS, AND WORK. BMW sometimes has incorrect part numbers, and sometimes ships wrong parts or poorly made parts. Be careful when ordering from companies, foreign or domestic, that may not be selling genuine or TRULY equivalent BMW parts. BMW has published SERVICE INFORMATION ERRORS! These published errors get passed along when re-published, by such as Clymers or Haynes! In some instances I DO have "corrections to Clymers or Haynes, etc" information on this site.
Can't find what you want in this website??
Click in the box below. I have similar boxes scattered in the articles LIST you are reading, for your convenience. The Search page has information on HOW to search, plus the actual search function. The search engine for this website is VERY good, but if it does not work for you, you probably have settings in your computer software that are restricting the search engine.
Airhead, K, and household things FOR FREE OR SALE OR TRADE (AND ...things I want):
YES....There is also some FREEEEE stuff!
"There is always a greater idiot."
Make something idiot proof and you will eventually see a demonstration of this saying.
A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
"The measure of a man's character is what he would do if he knew he never would be found out." - Baron Thomas Babington Macauley
"An expert is someone who has made all the mistakes which can be made, in a very narrow field." --Niels Bohr
"...You cannot prove a vague theory wrong. Also, if the process of computing the consequences is indefinite, then with a little skill any experimental results can be made to look like the expected consequences." Richard Feynman, 1964
There are three kinds of men: The ones that learn by reading. The few who learn by observation. The rest of them have to pee on the electric fence. - Will Rogers
"We have all heard that a million monkeys banging on a million typewriters will eventually reproduce the entire works of William Shakespeare. Now, thanks to the Internet, we know this is not true." -Robert Silensky
"There is no practical reason to create machine intelligences indistinguishable from human ones. People are in plentiful supply. Should a shortage arise, there are proven and popular methods for making more."
"Under democracy one party always devotes its chief energies to trying to prove that the other party is unfit to rule---
---and both commonly succeed, and are right..." -H.L. Mencken
E-mailing snowbum: CLICK!
What's with this lamp? Interested in SuperTech? Click HERE for details!
All the technical information on this site is: If you want to help maintain this website: DONATING
Don't trust a mechanic without an attitude. Folks who know how to do things have opinions, & opinions aren't changed easily.
If the print font is too small, I suggest you use your Browser's ZOOM feature.
Reading beyond this point and/or using content in my articles constitutes acceptance of my terms & conditions.
BMW numbers parts & service by GROUPS & sub-groups.
Showing all of them:
There are many methods of supporting your motorcycle when working on it. I used a lift at my BMW business, but I don't for my own personal garage-shop, as there is very limited room. I use the side-stand or center-stand for most work. I also have an anchoring method that enables me to easily remove & work on almost any part of the motorcycle aft of the front wheel. This is a link to my method:
Owner's manuals for R1200GS; K1200; K1300 series; F650GS;F800 series; S1000 series, etc.:
Owner's manuals for R1200GS; K1200; K1300 series; F650GS;F800 series; S1000 series, etc.:
For newer BMW POLICE bikes: Parts information. Technical information. Service Bulletins. https://www.bmwmc.net/
Proficient at editing E-mails? Special symbols? Using Foreign computers?
My 1984 R100RT bike, parts & many special tools, sold. The present owner & I shared this bike.
Temporary stuff...you'll never know what is HERE!
Hyperlink, humorous 'A Winter Tale': CLICK!
For SALE & WANTED: CLICK! SOME FREE ITEMS!
Learn and/or improve your off-road riding?
Please post technical inquiries to the Airheads LIST regarding Airheads; and NOT directly to me. In this way, your questions (& answers which may come from several sources on that LIST, and not just me), will help more than just you. This helps me, as I spend way too many hours on the Internet. I need time to eat, sleep, and have a life!If you insist on contacting me directly for help, I have a page for that: Direct Inquiries
Here is a source for bulletins, sales brochures, parts and service literature, etc. It dates back to the 1930's.
It is not just the antiques. There is even information on the Krauser's here. This is John Lacko's website.
If the print font is too small, I suggest you use your Browser's ZOOM feature.
Purchasing an Airhead? Want to do your own motorcycle maintenance? COMBINED ARTICLE! Getting Started
FUEL System in your Airhead motorcycle
(An article on fuel mileage, in depth, is #81)
1A. Fuel filters, petcocks, fuel flow, re-fueling, choke lever on clamshell models. FUEL HOSES. rev. 07/31/2017
1B. Fuel caps: Removing a bad cap; R/R locks; venting problems, ETC. Airheads AND Classic K bikes. rev. 06/26/2016
2. Luftmeister Auxiliary Fuel Tanks rev. 08/29/2016
3A. Bing CV Carburetors, PART 1; GENERAL NOTES, HINTS, leaking tops & dome inserts, tricky enrichener discs/shafts assemblies, aligning butterflies. rev. 09/03/2017
Be sure to read article 6, below ...... yes, even if you do not have a /5.
3C. There are NO overhaul nor adjustments articles on this website for the Bing model 53 'slide' carburetors, as used on the R50/5, R60/5, R60/6, and R60/7. They are straightforward. They use the SAME floats as the CV carburetors. For acceleration pump parts check with both BMW & with Bing Agency. One of the Airlist Members made some 'washers' that fit the acceleration pump, making them of nylon material. 3.556 mm x 0.33 mm. I have not confirmed the fit, etc.4. Bing carburetor Floats....AND FLOAT NEEDLES. rev. 05/27/2017 7B. Cables: Throttle; clutch; speedometer; tachometer. Speedometer cable rubber boot at transmission. Control assembly perch's/wedges. Driveshaft accordion. rev. 08/23/2017
9B. Lousy Fuel mileage; horsepower to attain high speeds; discussion of HP, Torque, RAM-AIR, Cd, & LOTS MORE! Why do motorcycles get such lousy mileage compared to many cars, which are vastly bigger and heavier? How much horsepower and/or torque increase does it take to improve performance? What about RAM AIR? Problems that can reduce fuel mileage. What is the best cruising RPM? Premium fuels versus mileage and combustion temperatures. rev. 03/27/2017
9C. Gasoline's: This is a link to an article (not by Snowbum). Truly curious? Technically minded? This long article describes octane, gasoline, leaded fuel, unleaded fuel, additives. There are interesting things here and there in this article, from which you could also get to other parts/versions by re-arranging the URL:
12. Bing carburetors that urinate....piss/weep/leak....onto your boot, the ground, floor, garage, grass. The Bing Leaks Dance. Replacing a float needle seat. Fuel foaming and funny throttle response, particularly on GS models; intake rubber hoses. rev. 06/21/2017
12A & 12B: EMPTY on purpose
13. The Dell'Orto Carburetor rev. 10/16/2017
Huge amount of information on how ALL types of carburetors operate, especially needle/slide types, and in particular the Dell'Orto carburetors. SPECIFIC information on Dell'Orto settings for R90S Airheads. Where to obtain parts. A link to an article on converting an Airhead to use the Dell'Orto (only the R90S came with them). Links to other carburetor articles of considerable value. Links to the factory Dell'Orto manuals on this website are also here. There are many sketches in this article. Allow time to load up if you are on a slow connection.
All the technical information on this site is DONATING
Electrical System:Fun Schematic Diagram: http://bmwmotorcycletech.info/Check Out This Schematic.pdf 14A. Basic electricity 101+. De-mystifying & Troubleshooting BMW Airhead Boxer Motorcycle Electric systems; includes battery and charging information; test lamp use, etc. rev. 06/09/2017
14C. Just about everything you need to know about how relays actually work. Includes Bosch/DIN numbered pins information.http://www.autoshop101.com/forms/hweb2.pdf
16-A. How the starter motor system works (basics); Starter & Starting Problems; Valeo to Bosch; Bosch to Valeo; FITMENT problems--broken nose cones, etc. Installing a Denso. Starter relays. Solenoids. OVERHAUL. rev. 06/01/2017
16-B. STARTING: Starter doesn't engage or function?
Starts, or barely, won't stay running properly? Information on the various starter models & different circuits over the years. Battery load testing and wiring check using the starter motor. rev. 11/27/2016
24C. Headlight modulators. Federal Law. California Law. Technical details. Links to sites with the laws and regulations. ALL types of motorcycle lighting; headlight brightness, links. LIGHTS EFFECTS ON HUMANS. rev. 11/26/2016
24D. RISKS AND REWARDS. Taking risks. Rewards. A two-part article. MOTORCYCLE SAFETY. How to make ourselves more recognizable, conspicuous, & visible. Downsides to increased visibility? Help for oncoming driver's speed of recognition.
Understanding the problems. Pros and cons. rev. 02/23/2017
30. IGNITION: Points; Timing lights; Ignition Modules; Ignition Canister (rebuilding yourself or sending them out); Coils and coil problems and testing of coils; Spark Plug Suppressor Caps; Dyna & Boyer, etc. Rubber sealing strip; sources for modules & Hall sensors & springs; testing & troubleshooting (including HIGH IDLE RPM); Points Boosters/Amplifiers. rev. 09/28/2017
32. SPARK PLUGS for Airheads, Pre-Airheads, Classic K bikes. Head threads; torques; ANTISEIZE (OR NOT); spark plug caps & wire assemblies; resistor & non-resistor spark plugs; Interchangeability charts & part numbers. rev. 08/21/2017
34. Adding Running Lamp Function to Turn Signals rev. 11/13/2016
35. New batteries, ALL TYPES, including lithium. Filling a flooded battery & initializing properly. Which battery to purchase. Sources. Usage. Chargers (SMART & not). Peculiarities. De-sulfating. Charging voltages. How to Load Test a Battery; ETC. rev. 10/12/2017.
35. New batteries, ALL TYPES, including lithium. Filling a flooded battery & initializing properly. Which battery to purchase. Sources. Usage. Chargers (SMART & not). Peculiarities. De-sulfating. Charging voltages. How to Load Test a Battery; ETC. rev. 10/12/2017.
38A. CAN-Bus, OBD-II. What is it? How it works. What about the future? WiFi in cars? WiFi in motorcycles? What is really coming, soon. Telematics?? CAUTIONS on desulfation mode on Smart Chargers. rev. 06/05/2017
|For section 38B onwards to the end of items numbered 38--|
AIRHEADS electrical schematic diagrams:
R80G/S, R45, R65 & R80ST, are all similar.
R65, ST, GS & G/S instrument pods are similar.
RS & RT are identical to each other for any one particular year.
R50/5, R60/5 & R75/5 use same diagrams, but there are two, the later one has fuses.
R60/6, R75/6, R90/6, R90S will all be very similar.
/6 & later with style of pods NOT like the R65, ST, G/S, GS, will look nearly alike; but there ARE differences in functions display lamps vertical order and tach wiring connections. The brake warning lamp is not on 1980's and later pods.
/7 is mostly similar to the last of the /6 series.
BMW's schematics for early eighties bikes MAY have errors. Example: BMW's diagrams for 1981 & later, showing IGNITION POINTS, not ignition module, for a particular model. 1981+ models actually had electronic ignition.
I have obtained schematic diagrams posted on this website from a variety of sources; including a large number of them direct from BMW. NONE are from the otherwise excellent Chitech BMW Electric School Manual, which is still available; and is STILL 'THE' best manual on Airhead, and general electrics; most who own one use it often as a PRIME RESOURCE. BUT...MANY bike model schematics in the rear of that Manual are difficult to read & some are fuzzy. I DO recommend you purchase that manual, see my manuals article: http://bmwmotorcycletech.info/manuals.htm; or, see http://bmwmotorcycletech.info/url.htm. There is a critique, with some corrections, that I made for that manual: http://bmwmotorcycletech.info/chitechelmnl.htmI likely have every schematic diagram for every Airhead (& most other BMW models to 1996 or so). My collection includes most of the various world versions. There are literally HUNDREDS of diagrams, including accessories ...even such as the early Airheads when they were available with Avon fairings. Diagrams include those for heated grips, special lighting, & Authorities (Police) models. There are CONSIDERABLE similarities between various models. There are LIKELY enough schematics already on this website to enable you to work on your bike. Note the red box on left side, above, listing similarities. If you absolutely need to contact me for a specific diagram, or perhaps something is not clear to you about a schematic on my website, you may ask me. I would like to know what the problem is, if any, whether an interpretation or specific ill; AND, if you need a schematic for the main frame diagram, or engine or some sub or accessory item that is not already covered on my website. I will need to know your BMW model, its year, and if a USA or Euro. It would be helpful if you knew the model code that BMW uses for your motorcycle. If you do not know the model code, which is helpful and saves me time, DO, then, furnish the full serial number or VIN number. Sometimes questions must be answered by referring to my electrical hints article #15, or some other article in the Electricals section of my website.
Link to a German website, with many Airhead (& some R1100 oilhead & other) electrical schematic diagrams ...and MORE than just that. There is a LOT of information besides schematics on this German website. The site contains information on a WIDE variety of subjects, not just electrical items. You will probably have
to snoop around a bit & click on the Shaltplane or Shaltplaene. The site keeps getting re-arranged & the actual address for the
diagrams to be selected by you keep varying. Might be best to just go to the homepage: http://www.powerboxer.de & start from there. But, you can try the address below, it may work:
Links for more electrical schematics, etc., are found in article #80, below.
BMW schematics MAY show things NOT on YOUR bike, which were special equipment or added accessories. Special equipment items have their own article here, see #38B, just below!
38B. Miscl. Electrical schematics: Hazard flasher system, fold-out fog/driving lights, heated grips, VDO instruments. Replacing a /6 left-side handlebars switch. Substitute voltmeters and clocks. Adding a buzzer or piezo to turn signals. rev. 04/29/2017
Link to someone else's diagram for the above bikes: This version is in pdf format & has the wiring & items shown in various colors. It is quite differently displayed than the above 38C diagram. http://r90sclub.dudley.nu/Articles/R90S+Wiring+Diagram.pdf
Schematic Diagram for the late /5, as a .gif; model WITH fuses:CLICK
Early eighties schematic diagram, of the colored type of presentation:
38M. Replacing a /5 ignition switch with a round barrel type switch:
Here is a link for a KIT to basically do a barrel switch installation:
38N. Radio codes: Key OFF. PRESS and HOLD "M"; turn key on. If code does not display, contact dealer or radio shop. You should have written the code down when you purchased the bike! ...it came with it!
38O. Heated Clothing: At this time I CAN NOT recommend Gerbings products, due to problems, reported from MANY, with personnel, workmanship, etc. I CAN recommend Widder heated clothing products. Aerostitch products are also good. See:references
Electrical contact cleaners and treatments are in article 73.
Mechanical? Electrical? BOTH? .....NEITHER?
39A. F, OT, S, and Z marks on your Flywheel (clutch carrier); re-marking, alignment, degreeing camshafts. RE-INSTALLING Flywheel (or Clutch Carrier) rev. 11/28/2016
For Automatic Timing Units, in depth, see article 29.
Mis-adjusted carburetors and/or sticky automatic timing units can cause high rpm, typically after full warm-up. See article #30, which has a section on this problem.
39B. Push-starting: See 47
39H. For information on timing an engine via measured piston movement, see item 72 below.
"Bookmark" (Favorites) the HOMEPAGE, and NOT the page you are looking at right now. The HOMEPAGE is
Revision/Editing dates are listed at the bottom of most articles. The homepage contains access to things NOT on, nor accessible, from the Index of Technical Articles list page you are now looking at. Going from the HomePage to an article, via the link at the bottom of the homepage, will ALWAYS give you the LATEST version of ANY article. PRES F5 to ensure a total refresh after the page you want is displayed.
Mechanical Systems, and 'other stuff':
There are many methods of supporting your motorcycle for ease in working on it. Some use motorcycle lifts. I certainly did that at my BMW business but I don't for my own personal garage-shop, as there is very limited room. I use the side-stand or center-stand for most work. I also have a front tire/wheel anchoring method that enables me to easily remove & work on almost any part of the motorcycle aft of the front wheel. Link to my method: http://bmwmotorcycletech.info/anchoring-front-wheel.jpg
44. Maintaining paintwork, aluminum, windscreen & helmet visor/shield. Drilling/cutting plastics such as a windshield. Repair cracked luggage & fairings. Pesky hollow rivets. Sandblasting? Cleaning aluminum wheels. Noisy fairing/dash? BENT LEVERS? Washing the bike. Black plastic and trim. Cleaning grunged-up exhaust systems. rev. 05/04/2016
45. Rear Wheel Splines; Rear Drive Output Splines; Rear Drive Oil Leaks/Oil levels; Replacing a Rear Drive Left Seal, Inner Seal, Nose Seal; Oil Leaks with Drum Brakes; Leaking oil drain plugs; Monolever & Paralever Cardan Bearings; Rear Drive overhaul, Rivets, Wheel Cup/Splines; ETC. Rev. 10/16/2016
See alsohttp://bmwmotorcycletech.info/references.htm, under E for EXHAUST
51A. Oil & filter change. 'Reading filters'. The "$2000 O-ring" ($3500+ if you ruin your crankshaft). Thermostat covers; LOTS more! ...INCLUDING spin-on oil filter conversions. Filter Changes. Reading oil filter elements. rev. 09/19/2016
51D. Oil viscosities, viscosity indexes, engine oils, gear oils, suspension/fork fluids, shock absorber fluids, SAE, SUS, Cst. GL4, GL5. BMW factory recommendations. Brands & ZDDP values. Oils for long term storage. rev. 05/31/2017
54-. Wheels, Tires, Axles, Hubs, Bearings, Steering Head, Forks, Seals/spacers, tires, dampers, ETC! See #44 for wheel paint recommendations, etc. & wheel coating information is here: chemicals
Section 54-3. WHEELS; Wheel Spacers; Seals; HINTS, ETC. rev. 01/15/2017
Also contains information on swapping various years & models of wheels (except Lester's, see 54-7 below). I suggest reading Section 54-4.
Section 54-4: Wheel bearing preload & servicing wheel bearings. Some other wheel information also, such as on the Speedi-Sleeve rev. 03/01/2017
I suggest you read Section 54-3 and look at Section 54-9.
Section 54-5: Tire tests & recommendations. Hydroplaning; tire width; top hat spacers; nitrogen. REAL tire testing! Tested tires by brand/model. Fender brace. Selecting tires. Things you never knew. rev. 07/11/2017
I suggest you read Section 54-3 and Section 54-6.
More tire information will also be found in Section 54-12; including a section on vibration/thrumming, etc.
Section 54-6: Tubeless versus tubes. Rim shapes. VERY detailed article rev. 11/07/2016
IN DEPTH discussion on going tubeless on Snowflake tube type rims, and every other sort of combination of tires, tubes ....and no tubes.
Section 54-10A. Front forks internals, alignment, stiction, braces, gaiters, cleaning & lubricating (or replacing) steering head bearings. Springs. Stiction. Fork sag. Modifications. Alignment/adjustment of rear Swing Arm. rev. 06-28-2017
Section 54-12. Tire installation & repairs. Tire pressures. Studding. VIBRATION. THRUMMING. Mudflaps. rev. 03/27/2017
See Section 54-10C for much more on tire created problems.
Section 54-13. Brush guards (hand guards). BMW offers its own, and this part number is for the black ones for the Airhead GS models, adaptable to many other models: 71-60-2-315-870. BMW also offers both black and white versions of several types and numbers, and many can be made to fit.
59. Empty, on purpose.
59A. Transmissions (nearly everything about them) rev. 08/12/2017
Additional information: New style seal used on R100 GS transmission output & Airheads crankshaft & K bikes at the alternator drive: http://bmwmotorcycletech.info/SI-00-053-88-new-style-seals.pdf
59B. Emergency Shifting Tools for 5 speed transmissions rev. 07/27/2016
Transmission won't shift?
Section 60-1: Disassembly & assembly. Heads, pistons, rings, cylinders, break-in; Helicoils; spigots (intake stubs); Timeserts; case threads for cylinder studs; rocker arms; rocker blocks. 06/18/2017
You may be interested in reading Sections 40; 60-3, 60-4, 60-5, and 60-6
Section 60-2: Flywheel (& also Clutch Carrier) removal/replacement WARNING; main seal & O-ring. Oil pump & its cover & seal. Rod bolts. Re-installation of Flywheel, seal installation photos. Crankshafts in depth. Factory bulletin on new style seals. Front crank bearing carrier. Grabby clutch, vibrations. Hard shifting. Idle rpm change with clutch lever use due to excessive crankshaft end-play. Specifications & parts numbers for crankshaft thrust washers. Crankshaft rotation in degrees versus piston movement ....ETC. rev. 10/02/2017
This article should be used together with Section 62.
New style seal used on R100 GS transmission output & Airheads crankshaft ...and K bikes at the alternator drive:
Section 60-5: Valves, valve seats; leaded fuels; guides, valve springs, aftermarket valves, noisy valves, bead-blasting, ETC. rev. 05/25/2017
You may be interested in reading Sections 60-1, 60-4, and 60-6
Section 60-6: Rocker arms, breakage, rocker arm shafts & bushes/bearings, valve gear, pushrod tubes, cylinder heads. Aligning the /5 valve gear. rev. 07/15/2016
You may be interested in reading Sections 40, 60-1, and 60-5
Section 60-7: Camshafts, broken cam tips, cam sprockets, lifters (followers), alternator & cam seals, crank nose bearing. ZDDP. Sports Cam installations, duration, timing, etc. rev. 07/28/2017
BE SURE TO SEE SECTION 60-2.
Section 60-9: Clutch, clutch arm, flywheel, clutch carrier, bolts, upgrades, throw-out bearings; push-rod; crankshaft end play spacers; 1981 clutch/carrier problems; clutch cable & fixing potential cable breakage & new cable problems; stuck clutch, clutch lever bushing; preventing broken transmission ears. Minimizing vibration. Basic Adjustments. Rev. 08/26/2017
I recommend that you read Section 43
Section 60-10. MOTOR MOUNT SPACERS. There are 4 motor mount spacers on Airheads. The two plain ones are identical & fit on the rear mount bolt (longer bolt). There are two that have welded-on spring attachment places. ONE has TWO such points, it goes on the left front & is where the side-stand & center-stand springs attach. The curved part faces DOWN, curves towards you. The other has only one attachment point, & that is for the center-stand spring ...it is fitted on the right front ...the hole facing rearward. There is a side-stand clip that fits under the left rear nut, instead of the waverly lockwasher that is on the other side. Spacers go between the engine and the frame. Torque nuts to 55 footpounds.
62. Replacing a timing chain, guides, tensioner and sprockets rev. 02/23/2017
Use this article with the cams article, Article 60-7, and, ESPECIALLY with Article 60-2
68A. Long list of hardware and many other parts. Not just metal parts. Sources & information not in 78 and 78A. Pozi & Phillips screws discussion. Locking methods for bolts, etc. ...discussion. rev. 10/22/2017
73. Chemicals. Cleaners. Removing old labels. Penetrating oils (NOT oils for engine, gearbox, final drive). Additives for oil & gasoline. Fuel tank repairs/treatments. Brake fluid. Chassis & Spline Greases. Electrical Contact Treatments. Anti-seize. Extensive information on Loctite. Sealants including RTV. Waxes, Plastic polishes. Coolants. Lock antifreeze/lubricants. Drilling plastics, etc. rev. 08/07/2017
76. Those pesky easy to lose WEDGES that fit at the handlebar controls! How to make one. This is a link to a sketch in .pdf.
The part numbers for these wedges are: 32-72-2-072-233; 32-72-1-232-929; and 32-72-1-242-626, etc.
78B. MANUALS AND LITERATURE; SOURCES, DESCRIPTION, CRITIQUE's, etc. Not just BMW. rev. 08/14/2017
Also >>> see article 78 and 78A.
80. empty on purpose.
84. See 7B about control & other cables & problems.
85. Foreign travel: Using foreign computer keyboards: see article 78C86. empty on purpose
You got this far & STILL did not see what you wanted? You could scan further down (good to do to see what is available), or:
A FEW GERMAN WORDS YOU NEED TO KNOW: CLICK!
Oilhead motorcycle section:
O1. ABS brakes problems? Here is a link to an article on the R1100 and R1150, how to reset the ABS:
ALSO See K14A & K14B in the K-bike section, well below.
O2. Salvage yards, for oilhead parts, etc: www.beemerboneyard.com
O3. See article #30, above, about the ignition Hall effect sensors.
How to go about repairing the ignition sensors: http://advwisdom.hogranch.com/Wisdom/oilhead_hall_sensors.pdf
O5. Links to website with good tech for Oilheads, such as the ABS system; TDC locating mandrel, ignition timing box, etc. First, the main link:   http://users.rcn.com/dehager/
This next link is to an article on the same website; diagnosis & repair of the Oilhead Hall Effect ignition sending unit.
You may want to refer to my own extensive article: IGNITION
O6. Bleeding/servicing the integrated brakes system:
O7. Link to German website, with LOTS of Airhead (and some R1100 oilhead, etc.). German electrical schematic diagrams. Using in conjunction with the diagrams on the Snowbum website. There is a LOT of information besides schematics on this German website. Click on Shaltplan, shown in red on that page, for your model:
O8. Death Rattle: Does your R850, R1100, or R1150 Oilhead, 1993-2004, make a loud rattle upon startup, or on the road?
This article describes the fix, with photos. The rear-view engine cut-away photo is a REAR-view of an Oilhead motor. The left tensioner assembly is located on top of the cylinder, "facing" downward, in a position that allows oil to drain out of the tensioner sleeve during shutdown. The right side tensioner assembly faces upward from the bottom, it remains full of oil during shutdown. This is why the tensioner that is typically replaced is the left side one. You can get a complete KIT at a good price, with the CORRECT UPDATED PARTS that were the final improvement method (not the intermediate BMW attempt that used some NLA parts) from Tom Cutter at his BMW repair center: http://rubberchickenracinggarage.com/chain.html. This converts to the final version using the tensioner sleeve & piston assembly, from the R1200S and RT (not R1200C). After installing, the noise will cease, and you can forget about the damage that could be caused by a timing chain tensioner failure. The conversion is to Hexhead parts. If the upper left guide totally fails, the engine can be destroyed. You want to fix things well before that happens. Replacement of that upper left guide, by BMW repair manual information, means splitting the cases. For those with death rattle noises, and cam chain guide rail problems (and this information should be seen for information EVEN IF you are only replacing the tensioner), here is a lengthy video, that explains a lot ....and ....how to possibly fix the engine if you have that rail damaged, without splitting the cases. I suggest you watch the entire video.
O10. Hyperlink to an article on what belts were used, which to use, how to adjust them, & at what interval replace them, etc.
O13. Tool to lock flywheel and TDC locator:
O14. There is a new-style Teflon oil seal being used on ALL BMW motorcycles. I expect it will be used at more places for replacement purposes as time goes on: SI-00-053-88-new-style-seals.pdf
O17. empty on purpose
For information on electrics in general, see article 14A. Schematics are in article O7; and links to other sources are also on this website.
For batteries see the new battery article, 35, well above.
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CLASSIC K-bike motorcycle section:
CLASSIC K-BIKES ARE K MODELS K1, K75, K100, K1100 ...and to some extent, the K1200.
Snowbum does not work on, nor generally have knowledge about the following BMW motorcycles:
F series; K 1200; S1000R; HPx; K1300; K1600 series.
http://autos.groups.yahoo.com/group/kbmw This site can be quiet. Snowbum occasionally posts/responds here.
http://www.motobrick.com Forum style. Classic K bikes. Active, lots of opinions, watch for awhile to sort out who knows, who guesses, etc. Snowbum does not participate on this forum.
http://www.motobrick.com/index.php/topic,2252.0.htm Factory K75 and K100 service manuals.
http://ibmwr.org The so-called BIG LIST. Has big separate sections on tech. Lots of K bike stuff (as well as other BMW models). There is also an E-mailing techlist, where Snowbum participates occasionally.
http://k11og.org/ Main page is seldom changed, that is, hardly ever anything added to it. The FORUMS, however, ARE active.
http://www.rbracing-rsr.com/downloads/K1100LT_RS_Repair.pdf A copy of the entire BMW-produced K1100LT, K1100RS repair manual, dated 5/1999.
http://largiader.com/k75/khistory.html Classic K bikes model history, K1, K75, K100, K1100. There are some things missing, & some that need embellishment, etc, such as there were changes in the rod lengths & pistons, the radiator got more fins, etc. But, Anton's history list is a good one. Use the main site, link just below, for access to his technical articles for Airheads & Oilheads, etc. THIS IS A REALLY GOOD WEBSITE!Anton is in the business of repairing BMW bikes, and I can recommend him for such work. http://largiader.com/
K3A. A version of the K100 schematic: K100 Schematic Diagram, pdf formatK3B. K100LT, schematic diagram of entire bike. This is a pdf, made directly from BMW's own information. While it is for the UK ABS version, in general, it covers the 1987-1989 era, and probably more. http://bmwmotorcycletech.info/K100LT.pdf
K3C. This is the LEGEND for the above, K3B, schematic diagram. Three pages in Microsoft WORD format.
K3D. Heated Grips. This diagram/schematic is for the R100GS, but has the same basics for all the BMW motorcycles that I know of. It is a simple diagram to use on the K-bikes, just not exact colors, fuses, wiring, perhaps, as on your particular bike. http://bmwmotorcycletech.info/R100GS-heated-grips-wiring.pdf
K4. Brake squealing, any model, and very especially the K75? ...see article 53 which DOES include information for K75, & all classic K bikes, for that matter. That article also has a lot of information on bleeding the brakes!
K6. See article 30 WAY ABOVE, about the ignition Hall effect sensors.
K9. K bike fork oil requirements rev. 08/14/2016. Front forks oil changing: See article in Section 54-10B.
K11. EMPTY, ON PURPOSE
K11A. Troubleshooting the LE-Jetronic classic K bikes (2 valve K75, 2 valve K100). HUGE amount of technical information, and even a step-by-step article, but you MIGHT (?) have to delve deeply into searching the site to find things, especially if authored by VOGEL. The website may, by the time YOU read this, allow you to at least browse without registering (?). There is probably a link at the bottom of the article so you can register. The articles are VERY MUCH WORTH ANY EFFORT AT FINDING AND LOOKING AT THEM ....and, may be very easy to find by now.
Having access problems, or? You can try registering at:
If you have trouble finding the troubleshooting article, look for Vogel's article entitled: "EFI/Electronic ignition K100 2V troubleshooting".
Here is a link for troubleshooting, that seems to be an abbreviated version of one of the above forum's articles, link above, but some charts & information WERE MISSING, strangely, in the following version. I'd not use this one, unless you have problems with the above several links. The charts, etc., might now be here ....I have not bothered to compare the links again.
K11B. Troubleshooting the K1100, or, any early K with the Motronic system...an article by Frank Warner, detailing what he did regarding his high fuel consumption. The link worked in Dec. 2016. The article was dated in 2002. It is a cached-mirrored copy ...allow it to load, it may take part of a minute to do so:
K12. EMPTY, ON PURPOSE
K13. Changing Coolant on a Classic K bike, how-to article. Discussion about various coolants. Heat on your legs. Heat insulation under the tank, etc. rev. 08/14/2016
ALSO contains notes on why the coolant job could be effected by updating of early K bikes from a 400 watt alternator to a 700 watt alternator, ETC.
K14A. http://bmwk10075abs1fix.web.fc2.com/ Repairs to fuel injection computer brains & ABS computer brains. Lots of good testing advice here too!
http://bmwk10075abs1fix.web.fc2.com/index.html Will get you to the main page, lots of technical information there!
Look at both of the above links, then Contact Tosi at: K100ABS@gmail.com Highly recommended by several people.
http://www.carmo.nl/index.php?language=en A place in the Netherlands that does all sorts of modules/computer brains, etc.
http://www.bba-reman.com BBA Re-manufacturing; 300 Myles Standish Blvd.; Tauntonk, MA 02780. (866) 573-2740; (508)-822-4490 I have had at least TWO different sender reports that do NOT recommend these folks, and NONE that DO recommend.
K14B. If you are having ABS codes problems, before you jump to conclusions, remove both ABS relays, clean internal contacts and clean the relay connection spades too, and add contact cleaner to them. This is also good advice for the ABS main computer plug connections. Here are a couple of articles to look at:
http://ibmwr.org/ktech.shtml Scan down for the ABS articles
K15. Ignition. Considerable amount of information on the module & Hall devices; and, how to set ignition timing:
NOTE: There is an article on this website that contains information, in depth, on how to check/adjust ignition timing when the ignition timing is specified in piston distance movement: http://bmwmotorcycletech.info/formulas.htm
See Airhead section, article 30 regarding the ignition circuitry, lots of useful information on the Hall element, etc. The following article, while for a R1100RT oilhead, is useful for K bike owners; it is illustrated & is about replacing the Hall sensors for a R1100RT repair, & is SIMILAR for a K bike: www.ebbo.org/2av54.php
If your Classic K-bike is having irregular ignition problems, & you can't find anything wrong with the ignition, remove the valve cover & check to be sure that the cover is grounded to the engine by means of a coil spring that is mounted to a cam bearing mount.
K16. Adjusting the steering head bearings on a K75, K100, K1100:
K17. Brake light switch problems ....see article well above, 37B.
If you have a 1985 K bike, and a stiff throttle, also read that article 37B ...yes, a brakes switch article! Information is well down the article.
K18. Hyperlink to a forums-type website. http://bmwsporttouring.com
K19. Locks, gas caps, KEYS, etc. See articles #1B (caps) & #75A (luggage), WAY above, that covers all of these things in depth.
K20. EMPTY, ON PURPOSE
K21. Doing a rear main seal job is involved. Here is a video of the procedure to R/R the main seal on a Classic K bike. Useful for anyone wanting to know what/how in taking apart the bike ....even if not doing a rear main seal job. In GERMAN for sound. The mechanical support for the bike is flimsy in my opinion. They found one of the headers broken ....in case you wonder about the exhaust pipe being 'shown'.
K22. Information for Classic K bikes, NOT just the K100. Many Service Bulletins here too: http://k100rt.aforumfree.com/
K23. A lot of K bike information. Has wiring diagrams and a lot of other information. In German, but very useful! Covers all the Classic K bikes (K1, K75, K100, K1100, K1200). Lots more than that. Wiring diagrams are under Shaltplän. Use Google translator. http://www.flyingbrick.de/
K25A. Service Information Bulletin SI-2630R. Failure to use all fuel in the fuel tank, whining noise from the fuel pump. This is a link to a PDF file on this website. The sketches are not
very clear, so look at them with a critical eye!
If you can furnish a really nice clear copy of that bulletin, let me know.
K26. Engine oil, & lubrication in GREAT DEPTH: see article 51-C
K27. Worn rear drive splines? Bad U-joint? Upgrade?
http://www.brunos.us/Bevel drives.htm I suggest you look at all of the videos!
Two videos on K75 and K100 rear drive spline servicing, Bruno's driveshaft and rear spline rebuilding, etc.
Doing a K75 rear drive input spline and driveshaft and swing arm lubrication? This is a link to a how-to-video, in German, but you will understand it. Note that normally one does not pull the swing arm, in this video I suspect it was done to replace the boot, and check the swing arm bearings. http://www.youtube.com/watch?v=Cs_RNtrN35A&feature=youtu.be
K28. New style seal used on R100 GS transmission output and airheads crankshaft ...and K bikes at the alternator drive:
K29. Link to a 6 part video series on how to disassemble and reassemble a Classic K-bike, to do an input spline service. Includes a lot of service and commentary on things the servicer found on this bike along the way. Lots of good hints. Very complete, including the swearing.
K31. Re-keying locks, especially fuel tank lock. Problems with the fuel cap; and other details.
Also: see my article 1B (caps) and 75A (luggage locks, regular locks...), well above, in the Airhead section of the Snowbum site, which have EXTENSIVE information.
K32. FUEL CAP on K bikes (and other bikes too). This is a video. It covers R/R cap internals. No information on keying locks.NOTE: The "kit" in the video, 16-11-9-062-461R was sourced from Bob's BMW. The "R" means Bob's is selling a repair kit. Be sure to get gasket 16-11-1-453-690. Also see 1B and 75A.
Many of my Airhead articles are informative for K bike and Oilhead owners; and some, such as the brakes article, are informative for all motorcycles. Other examples are my articles 78 and 78A. Many other examples of useful articles are in the Airheads sections. Scattered in this long list of Technical Articles you are reading are stated references to Airheads articles that also apply to Classic K bikes, and/or Oilheads ....but I have probably missed a few. I suggest you look at the entire list of articles, and see what might apply to your Classic K bike or Oilhead, etc. For information on electrics in general, see article 14A. For batteries see the new battery article, number 35. Both of these are in the Airheads section, quite far above.
Sidecar specific section:
When I ride my motorcycle, it makes me happy. When I drive my sidecar rig, it makes everyone who sees me happy ........and many want to chat with me. I suggest you allow extra time for your errands, drives, tours, etc.
This section begins with our present sidecar rig. The technical articles follow.
I had it shipped to me from Minnesota by HaulBikes (also known as Daily Direct); whose service is highly recommended by me & many others, including dealerships. I removed the Police-type saddle & Authorities radio trunk prior to Penny & my 2008 trip across the USA, installing the stock seat & large standard trunk. The Police/Authorities items have been sold. I have City-cases, as well as Tour-bags & use whichever is appropriate, even in combination sometimes. Specifications below are in brief, as I have done a LOT of modifications.
Tug wheels: 4.5 x 14" EZS.
Tug tire, REAR: 175/70-R14 rear (Will return to P165/70R14 at next tire change).
Tug Tire, FRONT: 165/70-R14 front.
Sidecar wheel: #300, 15" EML with 135R15 tire (to POSSIBLY 135/80-R15 in the far future).
Front fork: EZS Leading Link, with special fender to accommodate the tire size.
Front shocks: Koni 7610-1282 shocks (modified by me).
Brembo twin spot calipers on front wheel of tug, dual front floating discs and floating calipers, with torque arms.
ABS system removed.
Single disc rear brake uses Brembo two-piston 38 mm P108 caliper.
Rear master cylinder 16 mm Magura.
Brembo F05 sidecar disc brake plumbed to the tug's rear braking system.
Front wheel offset to right by 1-3/8". Sidecar wheel lead 13-1/4". Toe-in 3/8".
The need for a steering dampener, hydraulic, my modifications, is quite minimal.
R1100S modified hand-guards.
Hotel-quality rugs in chair and chair trunk.
Multiple types of electrical outlets in chair; modified RAM mount for GPS, etc.
Way over-designed/over-built TOP, designed/made HERE ...sheesh what a job!
See #9 below.
Some specifications, including empty and loaded weights & dimensions; plus a lot of factory brochures, and a LARGE amount of SERVICE information for the EML sidecar, will be found on this website, HERE:
The SKUNK flag stands for Sidecars Up Nort Klub. Up Nort stands for anyplace Up North of someplace or anyplace.
Dasse water-cooled trike; Lucie-Dasse,1895; first female driver in Belgium.
SC1C. Hyperlink for the Evergreen Council group training schedule for Basic & Advanced training:
SC1D. Hyperlink to a website that has a lot of photos, videos, links, etc., about sidecar traveling, much is out of the USA, some videos, etc., are in English, but the whole site is fun to look through. You could use Google translator.
SC1E. German website, lots of interesting things....if you do not read German, put the URL into Google Translations.
NOTE! If you use the Google CHROME browser, it has settings that can give you automatic translating for any website you visit.
SC1F. Source for Vintage sidecar items, numerous manufacturer's items here:
SC1G. Source for fuel tanks, valves, caps, gauge, etc:
SC2A. Sidecar Tech. Where to get information. Manuals, mechanicals, photos, licensing, modifications, subframes, mounts, brakes, alignment details & photos. R100RT-Ural rig mounts, etc. rev. 11/18/2016
SC2B. http://www.sidecar.com Has a LOT of sidecar technical information that is FREE.Be sure to download, or at least read, the three articles/books on that site furnished to the USCA by the late Dr. Hal Kendall: How to drive a sidecar rig, and alignment, setup, LOTS OF THINGS. At the top area, click on Links and Books, .....then click on Books and Manuals. VERY HIGHLY RECOMMENDED!
SC3B. http://www.haulnride.com A lot of sidecar information. Few seem to know of this website. It was originally set up for disabled drivers, and still has a huge amount of information for them, but has expanded.
SC4. There is a BRAKES section on this website. It has additional information on the installation of brakes of various types for sidecars. This is in addition to information in various SCx articles here. BRAKES
SC8. EML sidecars. MAJOR ARTICLE. Old sales brochure. LOTS of technical information on every part of the EML-GT2 and some other EML sidecars. Suspension & brakes overhaul. Lamps. Tires, etc. EZS information. Information on parts availability. Allow time to load if on slow connection! rev. 10/15/2017SC9. EML sidecar tops; photos; description of various types of tops; & my own custom top rev. 06/11/2016
SC14. HUGE HINTS & TECHNICAL ITEMS ARTICLE. Side-stand switch; BULB MONITORING UNIT, in depth; Clutch, Clutch lever; F.I. & hoses; alcohol-laced fuel, gas-o-hol, gasolines, driveshaft repairs, ETC. rev. 08/17/2016.
SC15. Lousy fuel mileage: see article 81
SC16. My present sidecar rig, see at the beginning of this sidecar section. Also see:
NOTE: see article 82, well above; about insurance!
The technical information on this site is
If you want to donate to help defray costs, click here: DONATING
That page also has history and information on how I run this website, without my being obligated to anyone!
Motorcycle & personal items WANTED/SELL or TRADE/BARTER:
There is also some FREEEEE stuff there!