Parts for Troy-Bilt TB425CS: Boom And Trimmer Parts

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

Engine won't start or runs rough? This spark plug provides reliable ignition for small engines in trimmers, blowers, and tillers. Easy DIY replacement.

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.

Flywheel assembly for tillers and outdoor power equipment. Replaces cracked, damaged, or worn flywheels that affect engine timing and cooling fan operation.

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.

Replacement reel and line assembly for gas line trimmers. Installs on the trimmer head. Replace when reel is cracked, line is worn out, or assembly is missing.

Handle bracket assembly for gas line trimmers and tillers. Mounts and secures the handlebar to the unit. Replace if cracked, broken, or damaged.

Replacement shoulder strap for line trimmers and leaf blowers. Attaches to equipment for comfortable, hands-free operation. Replace if worn, frayed, or broken.

Upper handle clamp for tillers and trimmers. Secures handlebar assembly in place. Replace if cracked, loose, or worn to restore proper grip control.

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

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.

Fix a trimmer that won't spin or cuts poorly with this lower flexible drive shaft assembly. Connects the motor to the cutting head for proper operation.

Replacement palnut for gas line trimmers. Secures internal components alongside screws and washers. Replace if cracked, stripped, or missing.

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.

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.

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

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

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.