Parts for Troy-Bilt TB70SS: Boom And Trimmer Parts

Engine piston ring set prevents fuel leakage and maintains compression. Replace when you notice reduced power, excessive smoke, or oil consumption. Verify fit with your model number before ordering.

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 clutch spring for tillers and trimmers. Restores proper clutch tension and engagement. Order a new spring if yours is broken, stretched, or missing.

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

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 for gas line trimmers. Connects trigger to engine carburetor. Replace if frayed, stuck, broken, or throttle response is poor.

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

Upper housing assembly with flexible shaft for gas line trimmers. Installs between power head and lower boom. Replace if housing is cracked 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.

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.

Trimmer head won't spin? This lower flexible drive shaft connects the engine to the cutting head. Common fix for worn or broken drive shafts.

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.

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

Outer spool assembly for electric and gas line trimmers. Replace this component if your original spool is cracked, broken, or missing. Mounts to trimmer head.

This is a high-quality retainer that is typically used in string trimmers. It is made of durable metal and fits in the area between the outer spool assembly and the spring on the trimmer. The purpose of the retainer is to ensure the spool stays in the correct location while the string trimmer is being used. This component can become damaged, break, or be lost and will need to be replaced in order to be sure the spool is supported and secure.If there is an issue with the string trimmer retainer, it can cause excessive noise during use. It also may prevent the trimmer from starting if other components are affected. A wrench and work gloves may be required to replace the part. Gain access to the retainer and remove it using the wrench. The new replacement part can be installed in the same place. Reassemble other parts, and the trimmer will be ready to use.This retainer is designed to fit string trimmers manufactured by Craftsman, Cub Cadet, Ryobi, Troy-Bilt, Yard Machines, Bolens, MTD, and Yard-Man. It is sold as an individual part. It is an authentic OEM replacement part that is sourced directly from the manufacturer.

If your trimmer won't release cutting line when bumped, the spool spring may be stretched or broken. This essential bump head component is easy to replace.

Inner spool reel for line trimmers. Holds and winds trimmer string inside the trimmer head. Replace if cracked, broken, or worn from use.

Secures the spool to your trimmer head and releases line when tapped. Replace if cracked, broken, worn, or won't hold the spool properly anymore.

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.