Parts for Troy-Bilt TB525CS: Boom & Trimmer - Model Tb575ss 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.

Reel spool assembly for gas line trimmers. Holds and feeds trimmer line during operation. Replace if spool is cracked, worn, or missing components.

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

24.932" boom assembly for gas line trimmers. Includes internal drive shaft. Replace if boom tube is bent, cracked, or damaged from impact or wear.

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.

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.

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.

Lower clamp assembly for line trimmers and tillers. Secures the lower shaft connection. Replace if loose, cracked, or vibrating. Verify fit with your model number before ordering.

Secures the lower handle clip on line trimmers and lawn equipment. Replace if broken, stripped, or missing to properly mount the handle assembly.

Protective blade guard assembly for gas line trimmers. Shields operator from debris and rotating blade. Replace if cracked, broken, or missing for safety.

This is a blade assembly designed for a string trimmer. It serves as the cutting component that trims grass, weeds, and light brush. Replace this part if the blade is dull, bent, cracked, or no longer cutting cleanly.

Spring retainer for line trimmers. Secures internal springs in place during operation. Replace if cracked, broken, or missing to restore proper assembly.

Reel index slider for gas line trimmers. Installs on the trimmer head to control string line release. Replace if cracked, broken, or missing.

Replacement speed spool spring for line trimmers. Installs inside the trimmer head spool assembly. Replace if broken, bent, or missing. Small hardware part.

Replacement plunger spring for gas and electric line trimmers. Restores spring tension when original is broken, worn, or missing. Direct fit part.

Line won't feed or trimmer line keeps breaking? This reel assembly holds and feeds cutting line properly. Common DIY replacement for worn or damaged reels.

Bump feed knob controls string line advancement on your trimmer. Replace when threading wears out or knob won't engage properly. Verify fit with your model.