...off, twisting the chain and making it difficult to track in the bar. I removed the plate that houses the drive sprocket and now am having trouble getting the plate back on correctly. I'm trying to match the notches in the buck back bar or whatever it's called with the three teeth or whatever they are for the band that raps around the clutch. I can't get it back together. I bought the saw second hand and I don't have a repair manual for it. It worked like a champ until I let the chain get too loose. Stupid me. I used to race Husqvarna race bikes but they were red. First dirt bike I ever had was a 72 Husqvarna CR250 bought new in 1972.