ms661c

I've got a 661 I'm working on. P&C got destroyed, and I may have found the reason why. I took the P&C off, and the crankshaft is rough to turn by hand and nearly impossible with the starter. It's good for about 2/3 of the rotation but 1/3 is rough and hard hard to turn through. Flywheel isn't...

The saw was running fine a week and a half ago before I took it apart to replace the oiler worm gear. I got the part today and put it back together. First pull it fires once and then nothing. I pull the plug and grounded it on the cylinder to see for spark and I see nothing. Tried a new spark...