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Rear Master Cylinder Problem

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I got the rebuild kit. Replaced all the parts and it still doesn't work. Before I put it on the bike I fill it with fluid and move the piston up and down. I get intermittent fluid out the top where the line screws into. If I have the piston out and fill the reservoir the fluid comes out thru a hole in the cylinder like it's supposed to.

What gives? I know fluid needs to be above the seal where the spring is ... but it's not getting there.

Any ideas?


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