DescriptionThis video provides step-by-step instructions for replacing the bump knobon a Ryobi string trimmer.
All of the information in this replacement video is applicable to the following brands: Ryobi
Step-By-Step Instructions1
To replace the bumped knob on your string trimmer,
2
Depress the two retaining tabs to release the lower trimmer head housing.
3
Lift the spool out of the housing and you can detach the old bump knob.
4
Install the new bump knob by positioning it on the bottom of the spool.
5
Feed the trimmer line through the eyelets as you reposition the spool and knob in the lower housing.
6
Realign the lower housing assembly on the upper housing and spring, then snap it into place.