Kobalt KST 4040X-06 Operator's Manual page 14

ASSEMBLY INSTRUCTIONS
6. To replace the bump knob
a. Remove the battery pack.
b. Turn the string trimmer over to access the spool.
c. Remove the spool cover (L) by pressing on the two
tabs parallel to each other on the sides of the spool
cover (L).
d. Remove the spool (M) from the spool
housing (O).
e. While holding the bump knob, firmly pull it out.
f. Replace with a new bump knob.
Reinstall the spool and spool housing.
6a
6b
6c
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