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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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<blockquote data-quote="PALMER84ONE" data-source="post: 222707" data-attributes="member: 6"><p>The 99 was unbalanced with f/r springs. If the fronts are brought up to .44 they would be more balanced, but they also need a little revalving in the shim stack.</p><p>Bikes old, so it has probably seen it's day. New springs could help and bring it back but don't expect much more than fresh if not revalved.</p><p>Oil level is 5.0" from top or 135mm. you can play with oil level to see if it helps. Reducing the air volume by increasing the oil level (amount) can benefit.</p><p></p><p>Good luck and carry on.</p></blockquote><p></p>
[QUOTE="PALMER84ONE, post: 222707, member: 6"] The 99 was unbalanced with f/r springs. If the fronts are brought up to .44 they would be more balanced, but they also need a little revalving in the shim stack. Bikes old, so it has probably seen it's day. New springs could help and bring it back but don't expect much more than fresh if not revalved. Oil level is 5.0" from top or 135mm. you can play with oil level to see if it helps. Reducing the air volume by increasing the oil level (amount) can benefit. Good luck and carry on. [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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