2 Piece Sprocket 3/8 7 Tooth Fits Stihl 064 066 MS650 MS660

3/8 inch pitch, 7 tooth two piece sprocket that fits the Stihl 064, 066, MS650 and MS660 chainsaws. Replace it when the teeth are worn to points or grooved, or the chain jumps or will not seat. Count the teeth and check the pitch on the old sprocket before ordering, grease the bearing surfaces, and run a chain that is not worn out on the new sprocket, since a stretched chain wears new teeth quickly.

• TWO PIECE SPROCKET - 3/8 inch pitch, 7 tooth drive.
• FITS STIHL 064, 066, MS650 AND MS660 - Compare the old sprocket with this one before fitting.
• SIGNS IT IS DUE - Teeth worn to points or grooved where the chain rides, a chain that jumps or will not seat, or a drum worn where the clutch shoes ride.
• COMPARE BEFORE FITTING - Count the teeth and check the pitch on the old sprocket. A 3/8 pitch, 7 tooth sprocket needs a 3/8 pitch chain and a bar to match.
• FITTING IT - Clean and grease the bearing surfaces. Run a chain that is not worn out on a new sprocket, since a stretched chain wears new teeth quickly.