1105UP538 ((139-631-303)(1989)) MTD Lawn Tractor - Overview

This is an original replacement part sourced directly from the manufacturer. The screw is commonly found in yard equipment from Craftsman, such as lawn tractors, snow blowers, and edgers. This part is made of metal, and may be found in various locations in the machine, depending on model. Please be aware that there are different screws...Read more used in the machine. Refer to the parts diagram to be sure of ordering the correct part. You will require a wrench when replacing this item. The screw is sold as an individual replacement part.

Sourced directly from the original manufacturer, this Bell Washer is made of gold-colored metal and is sold individually, not as part of a kit or assembly. It is used to provide spacing between various part assemblies along a shaft. If you hear a strange noise coming from the shaft area, or you notice the Washer is visibly worn or damag...Read moreed, it will need to be replaced. Refer to your owners manual to determine the exact location of this part. Customers rate the difficulty of this repair as Medium.

When the brakes are applied, this brake puck presses against the brake disc in your lawn equipment to help slow down or stop it. The brake puck is in the brake assembly, which might be located near the transmission or the wheels of your machine. If you notice that the machine takes longer to stop or that there is a loud scraping or grindi...Read moreng noise when you push down on the brake, your brake puck may have worn out. If it is not replaced, you risk losing braking power, which leads to equipment damage or accidents. Before any repairs, make sure that your machine is turned off and that the spark plug is disconnected. To dissemble the brake assembly and access the brake puck, use pliers or a wrench to remove any bolts or clips holding it in place. With a screwdriver, pry the brake puck out of your machine. Since this genuine OEM part is sold individually, determine the number of pucks your machine needs by consulting your user manual.

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.

This is a genuine OEM sourced part that is not part of a kit or assembly and is sold individually. This Spring Extension, or Extension Spring, serves a variety of purposes, depending on your model. It is black, made of metal, and may be found in multiple locations on your machine. This part needs to be replaced when it is worn, weak, dam...Read moreaged, or broken. Depending on its purpose, you may no longer have control of your machine when the spring breaks. You will need pliers to complete this repair. Customers rate this repair as Easy.

The air valve attaches to the wheel and is made of a durable material. This is a genuine MTD, Ryobi, Yard Machines, Bolens, Troy-Bilt, and Yard Man part sourced directly from the manufacturer for use in chippers, shredders, cultivators, edgers, lawn tractors, snowblowers, and trimmers. Keep in mind that this part is sold individually. Whe...Read moren replacing this item a set of pliers might be required during the installation process. It might wear out over time and will need replacing.

This OEM Extension Spring measures .62 x 6.12 inches. It is a silver, metal, individually sold, part. It can be installed with pliers and has been rated Easy to install by customers. (Note: Installation may require a lot of pull force to remove and reattach.) The spring attaches underneath the tractor on the drive belt idler pully, to t...Read morehe axle support bracket, and is used to apply tension on the drive belt idler pully. If broken or overly stretched, likely due to fatigue, you will lose your forward and reverse drive, as the belt will no longer be able to transmit power. If this happens, the part must be replaced. Refer to your owners manual and model number to ensure you are selecting the correct part.

This authentic OEM hi-pro key, also called a woodruff key or key stock, is a metal component found in your lawn equipment that connects rotating parts. It is 3/16 inch wide and 5/8 inch long. It fits into a specially-shaped slot on a shaft and prevents the parts from moving or slipping out of position while your machine is running. To fin...Read mored and replace a hi-pro key on your machine, check your user guide for instructions. When removing the hi-pro key, insert a flathead screwdriver or needle-nose pliers into its groove and pry it out of its slot. Please bear in mind that this hi-pro key is sold individually.

This is a genuine replacement part manufactured for use with outdoor power equipment. The screw includes a lock washer and is commonly used to secure the motor to the frame. This screw has various applications based on the model of the machine it is used with. The screw is sold as an individual replacement part, please see model diagram for part location and usage.

The variable speed belt goes around the engine pulley and the variable speed pulley. It is sold individually and is a genuine OEM sourced part which is specifically designed for use with lawn tractors made by MTD, Ryobi, Yard Machines, and Yard Man. A screwdriver, a set of pliers, a socket set, and a wrench set may all be needed to help replace this part if it becomes broken or stretched.

It is a genuine item that is supplied by the original manufacturer for use with a variety of lawn and garden equipment. A washer is a special part which helps to provide a tight fit between connected components. It is a standard hardware which may have multiple applications. This part provides an identical replacement for a damaged or a m...Read moreissing hardware that was installed on a new unit. Check the diagrams for your specific model for the exact location and the correct application of this flat washer. Note, it is made of durable metal and is sold individually.

This item is an original part from MTD, Ryobi, Yard Machines, Bolens, Yard Man, and Troy-Bilt for use in lawn tractors. The needle bearing attaches to the input shaft. You may need a wrench and a set of pliers when replacing this part. This item might break over time and will need replacing. It is made of metal and is sold individually.