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Case
Pump
DD EVA foam 3Ah
DD EVA foam 6Ah
Battery
Valve
3Dgasket
Lock ring
Reasons: Can't lock the battery
Download the instruction video
Body basement
Reasons: 1. Body basement leak 2. Junction burns out result in bad contacts
Repair instruction video
Chuck
Reasons: 1. Chuck size doesn’t fit screw bits 2. Chuck wobbles a lot
Gear assembly
Reasons: 1. Axle doesn’t turn 2. Speed cannot be regulated 3. Axle leak 4. Too loud
Torque regulator assembly
Reasons: 1. Leak 2. Torque cannot be regulated
Electric switch assembly
Reasons: 1. Cannot switch directions 2. Speed cannot be regulated
Speed trigger assembly
Reasons: 1. Leak 2. Speed cannot be regulated