Harbor Freight Tools 93853 User Manual

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SKU 93853 For technical questions, please call 1-800-444-3353

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Install a Chisel (106, 107) as previously discussed. (See Figure F.)

Make sure the Power Switch (66) is in its “OFF” position. Then, connect the
Power Cord & Plug (70) to the nearest 120 volt, grounded electrical outlet.
(See Figure E.)

Grasp the Demolition Hammer firmly by its rear Handle (62) and Auxiliary Handle
(104). Then, turn the Power Switch (66) to its “ON” position to begin work.

IMPORTANT: This Demolition Hammer requires a short period of time to warm
up. Depending on the room temperature, this time may vary from approximately
15 seconds (at 90 degrees Fahrenheit) to 2 minutes (at 32 degrees Fahrenheit).
A new Hammer requires a break-in period before full performance is
realized. This period may require up to 5 hours operation. (See Figure E.)

For the best penetration rates in concrete, run the Demolition Hammer with a
steady pressure but do not use excessive force as this will decrease the efficiency
of the tool.

If necessary, adjust the Variable Speed Control Dial (72) to increase the tool’s
cutting efficiency. (See Figure E.)

When finished using the Demolition Hammer, turn the Power Switch (66) to its
“OFF” position. Then, unplug the tool from its electrical outlet. (See Figure E.)

Allow the Chisel (106, 107) to completely cool. Then, pull and hold the locking
Slider (4) backward and pull the Chisel forward. The Chisel should be cleaned
after removing. (See Figure F.)

Make sure to store the Demolition Hammer in a clean, dry, safe location out of
reach of children and other unauthorized people.

INSPECTION, MAINTENANCE, AND CLEANING

CAUTION! Always make sure the Power Switch (66) of the Demolition
Hammer is in its “OFF” position and the tool is unplugged from its electrical outlet
prior to performing any inspection, maintenance, or cleaning.

Before each use, inspect the general condition of the Demolition Hammer.
Check for loose screws, misalignment or binding of moving parts, cracked or
broken parts, damaged electrical wiring, and any other condition that may affect
its safe operation. If abnormal noise or vibration occurs, have the problem
corrected before further use. Do not use damaged equipment.