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Yz 85 jetting

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Just got a YZ 85 2008 for my doughter.

If she hold the trottle in midrange... Low end is bogging and suddenly it explode in rpm.

What jetting and how should the needle be ? she weigh 130 pound

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2 hours ago, ralfleth said:

Just got a YZ 85 2008 for my doughter.

If she hold the trottle in midrange... Low end is bogging and suddenly it explode in rpm.

What jetting and how should the needle be ? she weigh 130 pound

I would say set the float before you do anything.   Then you can start to jet it for her riding.  If the float level is high,  it will sputter and run rich,  smoke more than usual,  foul plugs and generally make your day and hers a lot less fun than it should be.

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