so i bought a 20" tsumura off of fleabay new. put it on the 372 and after about an hour of cutting some 30" elm with a dry center I noticed the tip started smoking.
the wood was kind of pithy in the center 4" or so but never had an issue with my oregon bar and this. so I grabbed my sprocket greaser and greased up the front sprocket checked to make sure the saw was oiling and after about another hour it was doing it again. greased it again and it locked up at the three hour mark. since I did not bring a spare bar i finished up with the 346 and went home for the day.
got home and the sprocket would not move at all. thought maybe the fine crap from the pithy center had caked up the sprocket bearings or something so i dunked the bar in the parts cleaner and let it soak overnight came back out the next morning, blew it dry, relubed the sprocket and still no dice. could barely turn in with a shim slid into it. chain was fine, the guide rails up to the sprocket were fine, just the sprocket was locked up....
anybody got any suggestions?
the wood was kind of pithy in the center 4" or so but never had an issue with my oregon bar and this. so I grabbed my sprocket greaser and greased up the front sprocket checked to make sure the saw was oiling and after about another hour it was doing it again. greased it again and it locked up at the three hour mark. since I did not bring a spare bar i finished up with the 346 and went home for the day.
got home and the sprocket would not move at all. thought maybe the fine crap from the pithy center had caked up the sprocket bearings or something so i dunked the bar in the parts cleaner and let it soak overnight came back out the next morning, blew it dry, relubed the sprocket and still no dice. could barely turn in with a shim slid into it. chain was fine, the guide rails up to the sprocket were fine, just the sprocket was locked up....
anybody got any suggestions?