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.

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.