138-511-3 MTD Lawn Tractor - Overview

This Washer-Lock 5/16 is a silver, metal part that is sold individually and comes direct from the manufacturer. With a 5/16 Inch Interior Diameter and 1/2 Inch Outside Diameter, it is used to prevent the nut from backing off and becoming loose on the pulley shaft, and is attached to the drive belt pulley assembly. You will know if you nee...Read mored this because your owners manual will specify it, or the model number of your machine will correspond with this part. If the part is broken due to fatigue, the shafts will free spin when they should be locked together, and must be replaced.

The metal screw attaches to the block steering. It is a genuine OEM sourced part which is specially designed for use with chippers, shredders, edgers, lawn tractors, and snowblowers made by MTD, Yard Machines, Troy-Bilt, Bolens, and Yard Man. This item is available as an individual replacement. A wrench will be necessary during the instal...Read morelation of this part. It will need to be replaced if it becomes stripped or broken.

This is an authentic replacement part sourced directly from the manufacturer. The lock washer is commonly found in yard tools from Ryobi and MTD, such as trimmers, tillers, edgers, and lawn tractors. This part is made of metal, and may be found in various locations in the machine, depending on model. You may require a wrench when replacing this item. This product is available as an individual replacement part.