21657 (1988) MTD Lawn Mower - Overview

This silver metal lock washer helps prevent the nut on the drive belt pulley shaft from backing off during operation, it has a 5/16-inch inner diameter and a 1/2-inch outer diameter. one washer is included, replace it if fatigue or damage allows the connected shafts to spin freely, verify fit using the equipment model or owner manual

This hex bolt is a genuine OEM fastener used in various lawn and garden equipment and machinery. It has a hexagonal shaped head, with a diameter of 3/8 inches. The bolt shaft is 1.5 inches long with 24 threads per inch. The hexagon shape makes the bolt easier to grip and tighten using a wrench or a set of pliers. Over time, it is normal f...Read moreor the bolt to crack, corrode, or for the shaft threads to wear down. Inspect all the bolts on your equipment and replace all those that show visible signs of wear. Use a socket wrench to remove the faulty bolt(s) and thread the new one into position. Each bolt is sold individually. Secure it with a wrench or pliers and be careful not to over tighten as this could damage the bolt and equipment.

This is a genuine OEM sourced replacement screw which is commonly utilized on lawn and garden equipment. It is a standard hardware which has multiple applications based on the model of your unit, please refer to appropriate diagrams for the correct location and use of this part. It is a high-quality hex head screw which is made of durable...Read more metal and it is sold individually. Over time threads may wear out or it may simply get lost eventually requiring a replacement, note that a wrench will be needed to install or remove this hardware.

This Bell-Wash Flat Washer is an OEM part that measures .40 inches I.D. x 88 inches O.D. This washer is a silver, metal, washer sold individually. This part is rated as Easy to install by customers. If missing or damaged (likely due to fatigue) it should be replaced. Refer to your owners manual to ensure this is the correct part for you.

This item is a genuine OEM sourced replacement part that is intended to be used with riding lawnmowers from Cub Cadet, Yard Machines, Troy-Bilt, Bolens, and Yard-Man. The clip is used to attach the trail-shield to the back of the mower deck. The hinge clip is sold as an individual replacement part, please note two clips may be needed.

This OEM Hex Nut is a gold colored, metal, 3/8 x 16 part, sold individually. It is installed with a wrench, or socket and torque wrench, by torquing to the manufacturer specfications, and is used to secure parts in place. You will know it is broken when you see the nut has damaged threads or rounded off edges, which can happen due to fa...Read moretgiue. If it is damaged, it should be replaced. This part can have different uses and different degrees of difficulty depending on the part the hex nut is securing, but generally the replacement of this part is an easy job.