• Welcome, Guest! We hope you enjoy the excellent technical knowledge, event information and discussions that the BMW MOA forum provides. Some forum content will be hidden from you if you remain logged out. If you want to view all content, please click the 'Log in' button above and enter your BMW MOA username and password.

    If you are not an MOA member, why not take the time to join the club, so you can enjoy posting on the forum, the BMW Owners News magazine, and all of the discounts and benefits the BMW MOA offers?

R90/6 needle clip posiiton.

pszyjka

New member
What is the needle clip position for a '76 R90/6. the Bing manual says #2, but other sources say #1. Thanks.
 
probably a dumb question

is the top notch no. 1? Best I remember I am on notch no. 2 on my R90/6, but probably need to spring for new needles.
 
The owner's manual says notch #1, but Bing says #2 in their manual. when I last renewed some carb parts I tested both positions and #2 is the way to go.
 
Haynes manual.

Not the ultimate source...best to use the Bing settings. Remember, all of the settings recommended...by any source...is just an initial setting. For your setup, altitude, style of riding, etc., you might need to change things.

According to the Bing book, the #1 position is closed to the blunt end...this is the leanest setting for the needle. Remember that the idle circuit is in play from 0-25% throttle, the needle from 15-80% throttle, and the main jet from 60-100% throttle.

Edit: And now to contradict myself, here's a page from a /6 manual...note it says clip postion 1 for the R90/6:

http://www.pbase.com/dwerbil/image/74356139

As I said, pick something and see how the bike peforms. The clip position is a relative big change to fuel flow. Jet sizes, etc., would be small changes.
 
Back
Top