Please note that we offer a Top Quality Reproduction which is a perfect replacement for all 25-36hp engines. See part number C24-111-903-109-B.
When adjusting a pulley make sure you have the proper amount of shims installed in the complete assembly. We recommend using at least 10 shims. It's a good idea to start with too many shims so when the two halves are tightened together the belt is loose. To tighten the belt- remove shim washers from between the pulley halves one at a time re tightening the pulley halves each time to check tension. Proper tension should be about a half inch of deflection. Warning: if you tighten the pulley halves against the belt and not the shims you will break the inside half of the pulley . Store the leftover shim washers between the pulley outer half and the hat-shaped special washer.
These have an Outside Diameter of 108mm.