Bore size on 71cb750 master cylinder?

[Jpwhit1]

I don't see any numbers stamped anywhere.. Also, plunger seems to compress with ease. If that's the case..should I rebuild or "if it ain't broke, don't fix it"? And is pitting in the bowl going to affect performance?

Thanks!

 

[dirtdigger]

Does it work? Pitting itself doesn't hurt anything, if there is crap stuck in there then it could come loose and plug stuff up.

 

[Jpwhit1]

Picked up bike a few weeks ago. Looked like jello when I took cap off. Brakes were locked up. Bore size?