String Trimmer Trimmer Head

String won't feed or trimmer head doesn't spin? This hub connects the trimmer line spool to the drive shaft, enabling proper string deployment and cutting.

Replacement bump knob for line trimmers. Secures the spool on the trimmer head. Replace if cracked, broken, stuck, or seized. Easy installation component.

Outer cover for string trimmer housing that clips into the reel bottom and secures behind the center button. Replace if cracked, broken, or missing.

This is a gear box assembly that is a part of many types of gasoline-powered string trimmers. The gear box assembly is attached to the lower boom assembly. The purpose of the component is to spin and drive the trimmer head to cut through weeds and grass. The gear box assembly is attached to the string trimmer by two screws. This assembly comes with a trimmer head.If the gear box assembly has been damaged and needs to be replaced, a screwdriver will be needed. Place the string trimmer on a level surface and disconnect the spark plug wire for safety. Use a screwdriver to remove the screws from the old gear box assembly so it can be taken off. Use new screws to install the replacement component. Retighten the screws before use.This is an authentic OEM replacement component that is sourced directly from the manufacturer. It is sold as an individual part. The gear box assembly is designed to be used with string trimmers manufactured by MTD, Bolens, and Yard Machines.

Wound spool assembly for gas and grass line trimmers. Holds and feeds trimming line during operation. Replace if cracked, broken, or worn for proper use.

Drum lid (head cap) for string trimmers and brush cutters. Houses and protects the cutting string spool. Replace if cracked, broken, or missing.

Black plastic bump knob that covers the end of the trimmer spool. Triggers string release when tapped on the ground. Replace if cracked, broken, or missing.

Replace your trimmer's worn or cracked cutting head assembly. Includes housing cover, spool, bump knob, spring, and pre-installed trimmer line for easy installation.