It was bound to happen eventually. I got an 034 in today with bad crank bearings, but a surprisingly good cylinder and piston. Customer says they have been running Amsoil 100:1 for 15 years at 5 to 6 cords a year. Lower end gone in 75 to 80 cords on a pro saw. I can't help but think it was the oil.
It was a two-fer kind of day. The first saw in the door this morning (MS361) was also bad crank bearings AND either upper or lower rod bearing (or both). Piston hops up and down when I turn the flywheel . I haven't popped it all apart yet, but the piston and cylinder look good through the exhaust port. I am seriously curious on what oil he was running.
Funny thing is that I only had a couple bad bearing saws in 2014 and started off with two on my first day open in 2015.
It was a two-fer kind of day. The first saw in the door this morning (MS361) was also bad crank bearings AND either upper or lower rod bearing (or both). Piston hops up and down when I turn the flywheel . I haven't popped it all apart yet, but the piston and cylinder look good through the exhaust port. I am seriously curious on what oil he was running.
Funny thing is that I only had a couple bad bearing saws in 2014 and started off with two on my first day open in 2015.