Harbor Freight Tools Model 99792 - Manual (Page 12)

SKU 99792 For technical questions, please call 1-800-444-3353. Page 12
Chipping in a Straight line:
1. Use chalk or some other suitable
writing material, mark your work
surface to delineate the area you
intend to chip.
2. Once the Hammer is attached to the
Air Compressor as described in the
instructions, place the Chisel along
one of the marked lines. Hold the
Chipping Hammer firmly with both
hands.
3. To begin chipping, depress the
Throttle Lever (6) with your thumb.
4. As the Chipping Hammer breaks
through the top layer of concrete,
press down on the Chipping Hammer
to break up the sections below the
surface as well.
5. Keep moving the Chipping Hammer
along the line you want to section,
breaking the concrete as you go.
If the Chipping Hammer jumps out
of the designated area, release the
Throttle Lever and reposition the
Chisel back inside the line.
6. Continue to chip the concrete along
the marked line until the entire area
has been sectioned.
7. When done chipping, release the
Throttle Lever and allow the tool to
stop.
Breaking up Concrete:
1. Place the Bit on the center of the
piece of concrete. Hold the Chipping
Hammer firmly with both hands.
2. Depress the Throttle Lever with
your thumb to activate the Chipping
Hammer.
3. As the chipping action begins to
break the chunks of concrete,
release the Throttle Lever to stop the
Chipping Hammer, and reposition
the Chisel on larger pieces. Do not
attempt to break up small pieces with
this tool; the chipping rate of 1800
blows per minute is too aggressive
for breaking up small pieces of
concrete.
4. If the tool requires more force to
accomplish the task, verify that the
tool receives sufficient, unobstructed
airflow (CFM) and increase the
pressure (PSI) output of the regulator
up to the maximum air pressure
rating of this tool.
CAUTION! TO PREVENT TOOL
AND ACCESSORY FAILURE,
RESULTING IN INJURY:
Do not exceed the tool’s maximum
air pressure rating.
If the tool still does not have sufficient
force at maximum pressure and
airflow, then a larger tool may be
required.
5. To prevent accidents, turn off the
tool, detach the air supply, safely
discharge any residual air pressure
in the tool. Wipe external surfaces
of the tool with clean, dry cloth, and
apply a thin coat of tool oil. Then
store the tool indoors out of children’s
reach.