The KST 2224B-03 is a brushless 24V trimmer with a 13-inch swath. The KLS 124-03 trimmer head is the specific part that breaks most on this tool — the plastic bump knob cracks, the spool feed notches wear, and the pre-wound factory line binds after the second refill.
KLS 124-03 spool, every time. Then the trigger spring. Then the shaft coupler nut if someone’s ever forced it without checking the alignment arrow.
Replace the head spool each season (or switch to our pre-wound AS1300-pattern spool which doesn’t bind). Inspect the shaft drive spline at the gearbox annually. Brushless motor: no service required.
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