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“Pep and power are great, but it self destucted!”

written by on 19/07/2011

This saw was inexpensive, and ran great, at first, then it started to fall apart, muffler broke, bolts and screws fell out, then it started to run bad, wouldn't take throttle, took it to a few different shops, finally one tore it down and found the drive side crank bearing is loose in the case, causing air to leak by the seal, the case wore or was hammered out, also the crank was worn where the bearing fits on it. (Bearing appears to be fine) It appeared to possibly been out of balance, overreved, or just too much stress. The rest of the engine looked fine. I've read that some have had great success with these saws, and others are continually in the shop, I would conclude that if you have one, tune it richer so it doesn't over rev, and use the best synthetic oil you can get. If you are looking at them to buy, it may be a gamble. But it sure ran great at first! light and powerful, too bad it's a pile of parts now! Three year old saw, bought in the US, PS 5100S, 18" bar, was cheap, bought from box store, hard to find qualified and willing service personel.