yamaha viper sx idle problems - Snowmobile Forum: Your #1 Snowmobile Forum
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post #1 of 3 (permalink) Old 12-31-2008, 12:19 AM Thread Starter
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yamaha viper sx idle problems

Hi im hoping someone can help, i have a 2002/3 yamaha viper sx and it wont idle. i have set the 3 piot screws to the factory settings which is 1 7/8 turns from the seated postion. it will idle however with the choke out in the mid posistion, but i burn through the fuel obviously. sled season is here so i would appriciate any ideas.

cheers lee
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post #2 of 3 (permalink) Old 12-31-2008, 05:26 PM
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Sounds like the carbs need to be removed and cleaned.This should be done every year before you ride.The exhaust valves should also be cleaned and adjusted.
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post #3 of 3 (permalink) Old 01-02-2009, 08:00 PM Thread Starter
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thanks

hey thanks for the reply. Im not mechanically minded at all but i actually took the carbs out and all three pilot jets were blocked. i cleared them out of course and every think else looked good. It took a few pulls to get it going again but i got it started. After about 1 minute with the choke half on i turned it off and it Idled perfectly, then adjusted the idle speed and it seems to run better than it has done since i bought it.

thanks again lee
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