Main jet washer

Markblaster

Custom blaster
Dec 6, 2015
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Maybe helpful. I know a lot of people have had problems with this washer missing on there bikes.

137-14153-00-00 YAMAHA WASHER,MAIN JET

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Without washer.
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With Washer.
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With washer and jet.
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My new carb came with a mystery washer. I had no idea what it was for. Make sense now. But would you think the carb already has one on it?? I put the carb on already and never checked the main jet and the bike is running.
 
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My new carb came with a mystery washer. I had no idea what it was for. Make sense now. But would you think the carb already has one on it?? I put the carb on already and never checked the main jet and the bike is running.

My bike also ran without the washer. before the rebuild. Not sure how much if would effect it.
 
What size main jet do I need with pro circuit pipe an no air box only clamp on small air filter on carb an i premix 50:1