tbyrd1960
ArboristSite Lurker
I have a mid 1990s Stihl 021. I recently disassembled; crank bearings seemed OK, installed new crank seals. Cleaned surfaces good and smeared thin film of rtv to embed new seals. New impulse and fuel lines. Problem was I broke the flywheel key when I was disassembling. Ordered a good used flywheel on ebay. When I got everything together and fired it up, the saw ran for about a minute then I heard something clanging. The flywheel nut had come loose and it broke the flywheel key again. After reading some other posts, I wonder if I over-torqued during assembly and broke the flywheel key without realizing it. I also was not aware of the need to completely degrease the tapered shaft and flywheel so not sure what, but I did something wrong. Pretty sure I am going to buy a new trim saw. I know others with more knowledge would fix this one, but I obviously would benefit from attending a Stihl school. Leaning toward buying a Echo CS-310 from my local hardware store for $200. My store has a 16" bar on the CS-310. I was looking for a 14 mainly because that is what the Stihl 021 came with and it serves my purpose. I know I am mixing 2 different topics, but what is the pro or con of a 14 inch bar on the Echo CS-310? Anyone out there want the 021 for parts?