Question about 2007 Yamaha Roadliner S

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Backfires on down shifts and when reving up. Mainly when the rpms are going down

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Your idle mixture is too lean. You can adjust this by locating the mixture screw on the carb(carbs) and turning it counter-clockwise an 1/8th turn at a time. This will not affect running above 1/4 throttle, but will richen your idle circuit and the lean popping on deceleration. If you have misses above 1/4 throttle when accelerating, tou likely have trash in your jets and the carb will need to be removed and thoroughly cleaned.




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Posted on Jun 12, 2010

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Posted on Jan 02, 2017

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