Part Location Diagram of 308042002 Ryobi Spool Retainer - Black
See part A-9 in the diagram
( Grid squares measure 1x1 inch )

Spool Retainer - Black 308042002

$ 2.99
No Longer Available

No Longer Available

Sorry, this part is No Longer Available at, which means:

  • The part is no longer sold by the manufacturer.
  • The manufacturer does not stock any substitute parts to replace this one and therefore, unfortunately, we cannot obtain or recommend a substitution for this part.
  • We cannot obtain the part through any other means.

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Product Description

This is a spool retainer for your trimmer. You may also know this part as a bump knob. It is a right-hand thread screw to remove and attach to your trimmer head. Inside the spool housing, it holds the spool with the cutting line. It also is acts as a protection bumper to advance the line from the spool without damage. This part is considered a wear and tear part on your trimmer as it is constantly replaced.