Husqvarna 570 Clutch side crank seal replacement

[moshra]

Rebuilding a 570 with a scored piston and cylinder on it. Needs a new PTO side crank seal and I've read conflicting things, some say you have to split the case and others say that you don't. Which is it? Anyone actually done seals on one of these saws before?

 

[Jimmy in NC]

Not done a full case up build yet but done a couple top ends. Same as a 346 PTO if I remember correctly. Husky has tools to do it assembled.