Makita 631657-2 — genuine Makita electronic controller board (speed regulator) for select SDS‑max demolition hammers.
Description: Replacement electronic speed/controller PCB used to restore variable‑speed and electronic control on compatible Makita hammer drills. This is the original Makita control module sold under part number 631657‑2 and is supplied as the controller board only (for the 220–240 V).
Fits (example models): HR4011C, HR4010C and HR4001C are documented models that use this controller. If your tool exhibits loss of speed control, intermittent operation, or electronic failure, this board is the direct Makita replacement for those models.
Condition and use: Genuine Makita part — ready to swap into the original housing and connect to the existing wiring harness; restores the factory electronic speed regulation and control functions on the listed models. Confirm the part number on your tool’s parts list or nameplate before installing.
(Part number: 631657‑2 — controller / speed regulator, for Makita HR4011C / HR4010C / HR4001C 220–240 V machines.)
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