woodmass14
ArboristSite Lurker
Hello,
I was given an MS250/C 2009 from my Dad as he gave up on trying to fix it/spend more money on it. About 3 years ago a couple of fins flew off the flywheel and broke the bottom of the crankcase. He bought an new flywheel and crankcase and rebuild the saw. It started alright but after a couple of days of use the flywheel started eating away the starter system. It became harder and harder to pull before breaking and we'd end up having to change the pawls regularly as we couldn't find the source of the issue. The pulley has been replaced 3 times as the flywheel starts eating away the outer edge of it and pawls end up breaking the plastic of the pulley.
I've had this chainsaw disassembled a couple of times trying to figure out this issue but i can't find what's causing the issue. I thought it may be the crankshaft but can't see anything wrong with it, the ball bearings aren't damaged, wobbly and the piston is in great condition. I thought my dad may have bought aftermarket parts which caused the engine to sit incorrectly on the case but he pulled out the receipts and all the replacement parts were OEM.
Any ideas what could cause these issues?
I was given an MS250/C 2009 from my Dad as he gave up on trying to fix it/spend more money on it. About 3 years ago a couple of fins flew off the flywheel and broke the bottom of the crankcase. He bought an new flywheel and crankcase and rebuild the saw. It started alright but after a couple of days of use the flywheel started eating away the starter system. It became harder and harder to pull before breaking and we'd end up having to change the pawls regularly as we couldn't find the source of the issue. The pulley has been replaced 3 times as the flywheel starts eating away the outer edge of it and pawls end up breaking the plastic of the pulley.
I've had this chainsaw disassembled a couple of times trying to figure out this issue but i can't find what's causing the issue. I thought it may be the crankshaft but can't see anything wrong with it, the ball bearings aren't damaged, wobbly and the piston is in great condition. I thought my dad may have bought aftermarket parts which caused the engine to sit incorrectly on the case but he pulled out the receipts and all the replacement parts were OEM.
Any ideas what could cause these issues?