How to Replace the Bump Head Knob Assembly on a Ryobi Trimmer
Trimmer out of whack? It's time to face the fix. Whether you are a legendary landscaper or a weekend weed whacker, eReplacementParts.com provides the parts, procedures and facts you need to fearlessly fix what fails you.
The bump head knob assembly serves two main purposes on your trimmer. First, it contains the nut that allows you to secure the spool to the trimmer head. Second, it is the part you "bump" against the ground to allow more line to extend out from the trimmer head.
Because it is in constant contact with the ground, the bump head knob will eventually wear out. Replacing it is very easy to do.
This article provides step-by-step instructions for removing and installing the bump head knob assembly on a Ryobi trimmer.
Let's get started.
REMOVING THE BUMP HEAD KNOB [top]
1. Remove the bump head knob assembly.
Loosen (unscrew) the bump head knob.
Remove the bump head knob from the trimmer head.
INSTALLING THE NEW BUMP HEAD KNOB [top]
2. Install the bump head knob assembly.
Align the new bump head knob with the drive spindle.
Compress the bump spring while rotating the bump head knob to engage the threads.
Continue tightening the bump head knob until the assembly is hand-tight.
You don't have to leverage your savings to level your lawns. As you just learned, repairing your own equipment is easy when you follow our step-by-step guides. Not only did you restore trimmer functionality at a fraction of the cost of replacement; you have taken the edge off of future repairs, wherever you may find them.
Find your next fix here.