138-663-7 MTD Lawn Tractor - Overview

The Throttle Box Assembly, or the Throttle Assembly, is a kit that includes the housing, handle, and hardware. It is black and constructed of steel and plastic. It can be installed onto the right hand upper handle, using a screwdriver and pliers, and is rated as Medium difficulty to install. This kit contains the parts that control the ...Read moreamount of the air and fuel entering the engine. When the part breaks (likely due to fatigue) you will no longer be able to control the engine. If nothing happens when you move the handle, that means it has become disconnected. When the part is broken it must be replaced. Check your model number to ensure you are selecting the correct replacement part.

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.

It is an authentic OEM part which is made for use with lawn and garden equipment. This is the special self-tap screw that helps to secure components together. If the hardware is missing or is damaged, this will provide an identical replacement for the original hardware that was installed on a new unit. This high-quality screw is made of d...Read moreurable metal and is sold as an individual item. Refer to the owner\\\'s manual and the appropriate diagrams for your model to ensure the proper replacement procedure. A wrench will be needed to secure and remove this hex washer head self-tap screw.

This OEM 5 Pin ignition Switch is a silver, steel, individually sold part. It can be installed using a wrench and screwdriver, and has been rated as Easy to install. The part attaches to the dashboard, and is used to start and shut off the engine. If it is broken (likely due to fatigue), you will no longer be able to start or stop your ...Read moreengine and the part must be replaced. Refer to your owners manual or model number to ensure you are purchasing the correct part.

This pair of keys is supplied by the equipment manufacturer for use in lawn and outdoor power equipment. The key is made of metal and designed to prevent unauthorized use or accidental starting of the equipment. It is fitted into the ignition switch, found near the operator seat or control panel. If the key is lost, damaged, corroded or w...Read moreorn down, you will not be able to engage and start the engine. These keys come in a set of two.

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 headlamp is an OEM replacement part manufactured by brands such as MTD, Ryobi, and Yard Machines. It is compatible with over 150 models of lawn tractors. This headlamp provides a light at the front of the machine. With this headlamp, you may operate the machine in the late evening. This part should be replaced if it is burnt out, cracked, or broken. It is sold individually and requires no tools to replace.

This OEM headlamp socket connects the headlamp bulb to the electrical system of your lawn equipment. If you notice cracks, loose connections, or corrosion in the socket, it may be broken. If the bulb flickers or does not turn on, the socket may be faulty. You need to replace a broken socket to maintain optimal visibility and safe operatio...Read moren of the lawn equipment. To do this, first unplug your machine or disconnect the battery. Afterward, simply disconnect the electrical wires from the socket and gently remove it from its bracket. If you plan to replace this part, consider purchasing multiple sockets and replacing them simultaneously, as they tend to wear out at a similar rate.

This manufacturer-certified Hex Bolt, measuring 5/16-18 x .75 inch, is a gold, metal, individually sold bolt. It can be installed using a wrench or socket and torque wrench, by tightening to manufacturer specifications. If damaged (likely due to fatigue) the threads will be stripped, or the ends rounded off. If broken or missing, it sho...Read moreuld be replaced. Refer to your owners manual or model number to ensure you are purchasing the correct part.

This is an original part MTD, Yard-Man, Yard Machines, Troy-Bilt and Ryobi part for use with Lawn Tractors. The throttle cable stops the engine when you shift the lever to the Stop position. The most common reason for replacing the throttle control is when the engine doesn't throttle up when the throttle lever is increased. This part is s...Read moreold individually. The tools that you will need to replace the throttle cable are a 3/8 inch socket, -+ inch socket or nut driver, 5/16 inch socket or nut driver.

This is an original replacement part sourced directly from the manufacturer. The safety switch is commonly found in MTD lawn tractors. This part is made of high-quality plastic with metal connectors, and is used to sense the presence of the machine operator and cut power to the mower blades when the operator is not in the seat. This item is sold as an individual replacement part.