Overview
When teeth round off or develop burrs from extended use, it is time to replace the drive sprocket. This aftermarket kit matches original-equipment dimensions and material specs, providing a reliable fix at a lower cost than going through the dealer. Keeping this component in good shape extends the life of your chain and bar.
Key specifications
- Material: hardened steel
- Type: aftermarket replacement
Compatibility
This kit is compatible with DeWalt DCCS620B DCCS620P1 DCCS690M1 and similar models from the same product family. Verify your chainsaw’s model number before purchasing to ensure the sprocket pitch and drum bore match your saw.
Installation notes
Take off the side cover and bar assembly to access the sprocket. Pull the worn sprocket free and check the bearing underneath for play. Press the new sprocket onto the shaft, ensuring it engages the clutch correctly. Reattach the bar, set proper chain tension, and run the saw briefly at idle to confirm everything turns freely.
Common questions
Q: Will this drive sprocket fit my DeWalt DCCS620P1, or is it only for the DCCS620B and DCCS690M1?
Yes, this sprocket is made to fit the DeWalt DCCS620B, DCCS620P1, and DCCS690M1 chainsaw clutch assembly as a replacement for part 90618228. If your saw uses that clutch assembly and part number, this is the correct fitment.
Q: I’m replacing the clutch assembly on my DCCS690M1—should I change the drive sprocket at the same time?
If the sprocket teeth show noticeable wear, hooking, or uneven grooves from the chain, it’s a good idea to replace it during the clutch assembly service. Installing a worn sprocket with a new chain can cause poor chain tracking and speed up wear on the new parts.
Q: After installing this drive sprocket on my DCCS620B, do I need to do anything special before using the chainsaw?
After installation, make sure the sprocket is fully seated in the clutch assembly and that the chain and bar are aligned correctly before tensioning the chain. It’s also smart to rotate the chain by hand first and recheck chain tension after a short test run, since a new or freshly reassembled setup can settle in quickly.
