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02-11-2007, 09:37 PM
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#1 (permalink)
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I am Spartacus
Join Date: Feb 2004
Location: Milton Mills, NH
Posts: 15,403
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Hey, RJ! Keihin adjustment?
I've got a Yammi Inviter in the shop with a Keihin butterfly carb on it. There is a screw on the top of it, which I think is the low speed, but of course the micro doesn't label it. What's it for?
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1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month!
1993 Ski Doo Mach Z 780 triple
2001 Ski Doo Mini Z
Evergreen Valley Snowmobile Club Webmaster
If I'm not home, CHECK THE TRAILS!
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02-11-2007, 09:53 PM
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#2 (permalink)
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saskatchewan sledder
Join Date: Oct 2006
Location: Regina, Saskatchewan
Posts: 752
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this gotta be the first time SEG's asked for help on somethin' like this, j/k
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02-11-2007, 10:36 PM
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#3 (permalink)
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Registered User
Join Date: Oct 2006
Location: Clio, Michigan
Posts: 375
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It's the idle air mixture screw. Performs the same function as the idle mixture screws on Mikuni slide carbs.
Jerry
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02-12-2007, 03:23 AM
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#4 (permalink)
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Moderator
Join Date: Feb 2005
Location: Groton NY
Posts: 10,214
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The idle speed screw is the only adjustment shown other than the idle speed adjuster screw. The book shows that the jet should be changed to allow for every 2000 ft change in elevation and 18 degree change in temperature. A lower number jet should be used whenever altitude or weather temp. increases.
Float level is adjusted by bending the metal tang between float body and float pin. The distance should be 0.48/0.67 inch when the carb is tilted at a 20/30 degree angle.
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Old Cat Rider
w/ Comet 108 Pro-4 clutch
80 PANTERA 500 F/C w/ Comet 102 clutch
'90 Wildcat Project in progress.
Trail Boss; Dryden to Summerhill trail.
http://www.dcdrifters.net/
Senior Deacon; F&AM Lodge# 472
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02-12-2007, 07:16 AM
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#5 (permalink)
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I am Spartacus
Join Date: Feb 2004
Location: Milton Mills, NH
Posts: 15,403
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I thought it was the air mix screw, but wasn't sure. One turn out is static adjustment? In for leaner? I'm so used to Mikunis, never had to work on a Keihin before!
__________________
1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month!
1993 Ski Doo Mach Z 780 triple
2001 Ski Doo Mini Z
Evergreen Valley Snowmobile Club Webmaster
If I'm not home, CHECK THE TRAILS!
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02-13-2007, 10:42 AM
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#6 (permalink)
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Moderator
Join Date: Feb 2005
Location: Groton NY
Posts: 10,214
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Yep, one turn is the starting point. Adjust until it idles smooth and it is ready to go.
__________________
Old Cat Rider
w/ Comet 108 Pro-4 clutch
80 PANTERA 500 F/C w/ Comet 102 clutch
'90 Wildcat Project in progress.
Trail Boss; Dryden to Summerhill trail.
http://www.dcdrifters.net/
Senior Deacon; F&AM Lodge# 472
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02-13-2007, 08:01 PM
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#7 (permalink)
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I am Spartacus
Join Date: Feb 2004
Location: Milton Mills, NH
Posts: 15,403
|
Got it done, thanks!
__________________
1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month!
1993 Ski Doo Mach Z 780 triple
2001 Ski Doo Mini Z
Evergreen Valley Snowmobile Club Webmaster
If I'm not home, CHECK THE TRAILS!
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