Spark Plug Socket Wrench, is included with all StarFire Bike Engine Kits.

You can use the socket tool with the aid of a screw driver or rod as a handle to turn the engine crankshaft to assist with the fitting of the heavy duty 415 drive chain to the 10T sprocket. To prevent injury with engine motor ignition and ease of turning over the crankshaft, make sure the spark plug is removed prior to sprocket rotation.