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Everything Dirt Bike
Make / Model Specific
Yamaha
Rear Brakes locking up
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<blockquote data-quote="SRAD97750" data-source="post: 203980" data-attributes="member: 425"><p>It could be a sticking M/C piston. Remove the reservoir cap/bladder and look down into the reservoir outlet through the fluid. When you squeeze the lever and release you should see the piston 'pass by' the orifice. If the motion is the same as the lever in both directions, I doubt the M/C piston is sticking.</p><p>Spray out the banjo orifice on the M/C and that should clean out the fluid side.</p><p>Rebuild kits are cheap and easy if you want peace of mind, or if the line cleaning doesn't fix it.</p><p>-BIG DAN<img src="https://www.dirtbikeaddicts.com/static/images/smilies/thumb.gif" class="smilie" loading="lazy" alt=":thumb:" title="Thumb :thumb:" data-shortname=":thumb:" /></p></blockquote><p></p>
[QUOTE="SRAD97750, post: 203980, member: 425"] It could be a sticking M/C piston. Remove the reservoir cap/bladder and look down into the reservoir outlet through the fluid. When you squeeze the lever and release you should see the piston 'pass by' the orifice. If the motion is the same as the lever in both directions, I doubt the M/C piston is sticking. Spray out the banjo orifice on the M/C and that should clean out the fluid side. Rebuild kits are cheap and easy if you want peace of mind, or if the line cleaning doesn't fix it. -BIG DAN:thumb: [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
Rear Brakes locking up
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