Chainsaw Repair

Quote from: Chainsawrepair on March 28, 2011, 08:26:48 pm

(Flywheel removal using Husqvarna "knocker" service tool)

What keeps this tool from messing up threads and exactly how does it work? Does it have something inside to take up shock to threads?

I usually just put the nut on 3/4 on and tap till fly breaks loose. Yesterday I had a impossible fly to break loose. So when I went to remove nut it removed the threads on the crank end and also stripped out the threads inside the fly nut.

So I broke out my mini 3 jaw and pulled fly right off.

Put new flywheel and new nut back on and all was good to go with a buggered up crank end. 

"knocker" bottoms out on the end of the crank.  It does not exert force on the threads, actually protects them.  Pullers work also but there isn't always clearance to get the jaw in place.  I used an alum flywheel punch on the larger older cranks.

Which one fits 372 and maybe the one for 346 etc?  Do you know the part numbers.

Flywheel removal tool
(coarse thread)
For all models
Part. No. 504 91 08-07

Flywheel removal tool
(fine thread)
For all models
Part. No. 502 51 94-01

Yeah it was hard to get clearance on all 3 jaws. But somehow I managed it. 

Almost was going to grind the jaw end that was at bottom to give me more clearance.