1.Use with 12 to 21 tooth sprocket. Place the Sprocket Checker chain on sprocket with the bottom round end of the handle between two teeth and the test link angling away from the sprocket.
2.Apply a force of 10kg/ 22lbs on the handle in the direction of sprocket/ drive rotation. While the Sprocket Checker chian is under load, swing the test link onto the sprocket.
3.The test link easily moving onto the tooth’s bottom means the sprocket is in good condition. If not, it is worn and should be replaced.