The WMP Belt Tension Gauge provides a simple way to check and adjust belt tension on motorcycles equipped with a secondary drive belt. Correct belt tension helps prevent premature wear and ensures the drive system operates correctly. Ideal for use following belt replacement, adjustment or wheel servicing.Features: Easy to use and read. Allows accurate belt tension adjustment. Suitable for secondary drive belts with a 10lb specification. 1 to 3.5 measurement scale. Ideal for use after belt replacement, adjustment or wheel servicing. Directions for Use: Position the small O-ring over the 10lb mark. Position the U-shaped belt cradle against the bottom of the belt at a 90-degree angle and locate the large O-ring to a reference point. Record the reading. Push upward on the rubber bumper until the small O-ring touches the bottom of the tool body. Re-align the large O-ring to the reference point. The difference in the reading is the belt deflection. Refer to the vehicle service manual for the correct specification.