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Thread: R90/6 needle clip posiiton.

  1. #1
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    R90/6 needle clip posiiton.

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

  2. #2
    Administrator 20774's Avatar
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    I'd go with the Bing manual...what are the "other" sources?
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  3. #3
    P Monk
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    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.
    P. Monk
    My prized possessions. 74 R90/6 Mine! (also know by bride as the Black Hole). 09 R1200 GS. My wife, 1953 model who has survived aplastic anemia and a bone marrow transplant. My most prized possession is my relationship with Jesus!

  4. #4
    Superkraut typ181r90's Avatar
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    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.
    // 1975 BMW R90/6 (cafe'd) // 1957 BMW R60 (in pieces) // 1967 Aermacchi/H-D Sprint 250 SS (custom special) // 1973 VW Type 181 Custom SOLD )

    http://symphonyofshrapnel.blogspot.com

  5. #5
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    Quote Originally Posted by 20774 View Post
    I'd go with the Bing manual...what are the "other" sources?
    Haynes manual.

  6. #6
    Administrator 20774's Avatar
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    Quote Originally Posted by pszyjka View Post
    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.
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  7. #7
    Registered User dmftoy1's Avatar
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    I've got my 74 R90/6 set on 2 per snobum's reccomendation and seems to run well and pull hard

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