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Replace the PCBA
10. Mount the lock-off trigger and switch trigger into the handle housing by aligning their fixing
holes with the fixing poles in the handle. Make sure they are pushed into place.
11. Insert the speed adjustment switch into the handle housing slot as shown.
12. Position the shaft in the rear housing, lock it by the fixed ring with the tapping screw.
Align holes with fixing pole
Insert the speed
adjustment switch
