Parts for Craftsman 41AD578C799: General Assembly Parts

Throttle housing and trigger assembly for gas line trimmers. Includes plastic housing, trigger, and spring. Replace if cracked, broken, or worn out.

Throttle trigger handle for gas line trimmers. Mounts to the control handle shaft to control engine speed. Replace if broken, cracked, or stuck in position.

Replacement throttle trigger spring for gas line trimmers. Installs inside the throttle trigger assembly. Needed when original spring is broken or missing.

The On/Off Switch is an OEM part for MTD outdoor power equipment. This switch is a crucial component for the safe operation of various types of lawn and garden equipment, including lawn mowers, snow blowers, and other powered tools. 

Causes of damage to the On/Off Switch often involve wear and tear from regular use, exposure to harsh outdoor conditions that can corrode or damage electrical components, or accidental impacts that can physically damage the switch.

Symptoms of a bad On/Off Switch include:

• The equipment failing to start
• The machine not stopping when the switch is turned to the off position
• Intermittent power or erratic starting and stopping

This OEM replacement part can be used on trimmers from Craftsman, Yard-Man, Cub Cadet, Bolens, Ryobi, Huskee, Troy-Bilt, MTD, Murray, and Yard Machines.

Throttle cable assembly for gas line trimmers. Connects carburetor to control lever. Replace if cable is stretched, frayed, kinked, or broken from use.

Fix a loose or damaged split-boom connection with this drive shaft coupler. Includes knob, coupler body, and mounting screws for secure shaft attachment.

Fastening screw for lawn mowers, snow throwers, and trimmers. Secures components together. Replace if stripped, corroded, or missing during repairs.

Replacement bolt for line trimmers and snow throwers. Secures internal components and housing. Order when original is stripped, missing, or damaged.

Lower flexible drive shaft for line trimmer attachments. Mounts inside the lower boom housing to drive the trimmer head. Replace when worn round or cracked.

This is the lower outer housing that encloses and supports the drive shaft on a string trimmer. It connects the upper shaft section to the trimmer head, protecting the rotating drive shaft and maintaining proper alignment. Replace this housing if it is cracked, bent, or broken, which can cause excessive vibration, poor cutting performance, or a trimmer head that won't spin.

Replacement screw for lawn tractors, tillers, and trimmers. Used throughout various assemblies. Replace if lost, stripped, or damaged during repairs.

This is a genuine replacement screw designed for use in select MTD engines on lawn and garden equipment. Specifically, this is an anti-rotation screw, which is used to stop the drive shaft housing from turning inside of the main housing assembly. This screw is a small part that is subject to constant vibrations, pressure, and high temperatures. It can sometimes become worn or damaged as a result or even break off entirely, which would mean that the inner housing would no longer be held in place accordingly. If this screw is damaged or lost, it needs to be replaced with a genuine OEM replacement as soon as possible. This MTD anti-rotation screw is manufactured with high-quality materials and designed for use in select trimmers from MTD, RYOBI, Yard-Man, Troy-Bilt, Murray, Cub Cadet, Yard Machines, and Bolens. This replacement will require a screwdriver. Simply remove the damaged screw, if it is not already missing, from the clutch cover assembly, and then install the new screw. It should only take a few minutes to perform the replacement. Be sure to wear gloves to protect the hands. This screw is sold individually and does not include any additional parts or hardware.

Replace a dull or damaged trimmer blade assembly that causes uneven cutting or poor performance. Straightforward installation takes 15-30 minutes.

Protective debris guard assembly for gas line trimmers. Shields operator from thrown debris during trimming. Replace if cracked, broken, or missing.