Makita 517574-9 — genuine Makita armature (rotor) assembly, a direct replacement rotor/commutator unit designed to restore motor performance in affected laminate/rotary trimmers.
This part is listed for Makita models 3707 and 3708 and their “F”/fixed‑base and FC tilt‑base variants (for example 3707, 3707F, 3707FC, 3708, 3708F/3708FC) — check your model code to confirm fit.
Details: the 517574-9 is a complete armature assembly (shaft plus commutator and balanced windings) intended for 220–240 V trimmer motors; the same armature is used in the 440 W, 6 mm‑shaft rotary trimmer configurations of those models.
If the motor is showing loss of power, heavy sparking at the brushes, or unusual noise, replacing the armature with this original Makita assembly will return proper rotor function and extend tool life. This is one of the key parts for power tools repairs when the motor internals are the source of the fault.
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