Harbor Freight Tools 62421 User Manual - Page 9

Maintenance and Servicing Procedures not specifically explained in this manual must be performed only by a qualified technician. Safety Setup TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION: Make sure that the Trigger is in the off‑position and remove its Battery Pack before performing any procedure in this section. TO PREVENT SERIOUS INJURY FROM TOOL FAILURE: Do not use damaged equipment. If abnormal noise or vibration occurs, have the problem corrected before further use. Cleaning, Maintenance, and Lubrication 1. BEFORE EACH USE, inspect the general condition of the tool. Check for: • leaking, swollen, or cracked battery pack, • loose hardware, • misalignment or binding of moving parts, • cracked or broken parts, and • any other condition that may affect its safe operation. 2. AFTER USE, wipe external surfaces of the tool with clean cloth. 3. NiCd BATTERY MUST BE RECYCLED OR DISPOSED OF PROPERLY. Do not short, incinerate or open battery. 4. Disconnect battery pack and store battery pack, charger, and tool in dry, indoor area out of reach of children and away from metal objects (i.e., paperclips, coins) to prevent shorting. Troubleshooting Problem Tool will not start. Possible Causes 1. Battery Pack not properly connected. Likely Solutions 1. Remove Battery Pack, make sure there are no obstructions, reinsert the Battery Pack according to its shape (it should only fit one way), and press firmly until the Battery Pack locks in place. 2. Battery Pack not properly charged. 2. Make sure Charger is connected and operating properly. Give enough time for Battery Pack to recharge properly. 3. Battery Pack burnt‑out. 3. Dispose of old Battery Pack properly or recycle. Replace Battery Pack. 4. Internal damage or wear. 4. Have technician service tool. Tool operates slowly. 1. Forcing tool to work too fast. 2. Battery Pack power low. 1. Allow tool to work at its own rate. 2. Recharge Battery Pack. 3. Battery Pack burnt‑out. 3. Dispose of old Battery Pack properly or recycle. Replace Battery Pack. Performance decreases over time. 1. Bit dull or damaged. 2. Battery Pack wearing out. 1. Keep cutting bits sharp. Replace as needed. 2. Battery Pack capacity will gradually decrease through use. If symptoms are severe, recycle old Battery Pack (or dispose of properly) and replace it. Excessive noise Internal damage or wear. (Carbon Have technician service tool. or rattling. brushes or bearings, for example.) Overheating. 1. Forcing tool to work too fast. 1. Allow tool to work at its own rate. 2. Bit dull or damaged. 2. Keep cutting bits sharp. Replace as needed. 3. Blocked motor housing vents. 3. Wear ANSI-approved safety goggles and NIOSH‑approved dust mask/respirator while blowing dust out of motor using compressed air. Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect Battery Pack and Charger power supply before service. Operation Maintenance Item 62421 For technical questions, please call 1-888-866-5797. Page 9