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Yahama 90 cc dirt bike/ can't get it to idle
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Posted: 07/17/10
03:30 AM
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I KNOW THIS IS NOT THE PLACE FOR THIS BUT I NEED HELP. I HAVE A OLDER YAMAHA 90 CC DIRT BIKE THAT I CAN'T GET IT TO IDLE. I REPLACED THE THROTTLE CABLE, LUBED THE SLIDE FOR THE THROTTLE, CHOKE AS IT WAS STICKING. i CONSTSNTLY HAVE TO APPLY THE THROTTLE FOR IT TO IDLE, BUT THEN THE IDLE IS TO HIGH.
I HAVE CLEANED THE CARB AND I BELEIVE THAT THERE IS NO BINDING IN THE THROTTLE CABLE FOR IT TO IDLE TO HIGH.
COULD A VACUME LEAK WHERE THE CARB MEETS THE INTAKE CAUSE IT NOT TO IDLE.
THERE ARE 2 ADJUSTMENTS ON THE CARB. 1 ON THE AIR SIDE ANS 1 ON THE FULE SIDE OF THE CARB. WHAT SHOULD THE SETTINGS BE AS FAR AS HOWM MANY TURNS OUT SHOULD THEY BE.
ANY SUGGESTIONS 
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wolf1
Addict
| Posts: 4073
| Joined: 11/07
Posted: 07/17/10
06:18 AM
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it sounds like the pilot jet is clogged up.
sometimes even if you clean it out there can be a little debris that was missed that cloggs it right back up.
since the pilot jet controls idle i would start there before turning the fuel/air mixture screw.
meet me at www.quadclass.com
ALL REPAIR ADVICE GIVEN FREELY, I CANNOT ATTEST TO YOUR MECHANICAL ABILITY FOLLOW AT YOUR OWN RISK
Wolf Performance
...KEEP IT RUBBER SIDE DOWN!!....
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