Loosen the pulley nut with a socket wrench and tap or pull the pulley off the shaft.

Unplug the shifter harness and remove two 3 8 inch screws holding it in place.

Support the assembly so the loaded spring does not pop out when the final screw is removed.

Check the clutch spring, plastic housing, and shifter assembly for damage or wear.

Verify the coil resistance with a multimeter according to the machine’s schematic.

Replace any defective parts and reassemble the shifter, spring, and clutch in reverse order.