Harbor Freight Tools Model 99792 User Manual
Page 9
SKU 99792
For technical questions, please call 1-800-444-3353.
Page 9
quick coupler, will make operation
more efficient, but are not required.
WARNING! TO PREVENT SERIOUS
INJURY FROM ACCIDENTAL
OPERATION:
Do not install a female quick
coupler on the tool. Such a coupler
contains an air valve that will allow
the air tool to retain pressure and
operate accidentally after the air
supply is disconnected.
Note: Air flow, and therefore tool perfor-
mance, can be hindered by under-
sized air supply components.
3. The air hose must be long enough
to reach the work area with enough
extra length to allow free movement
while working.
4. Make sure the tool’s throttle or switch
is in the off position; refer to Opera-
tion section for description of con-
trols.
5. Close the in-line safety valve be-
tween the compressor and the tool.
6. Turn on the air compressor according
to the manufacturer’s directions and
allow it to build up pressure until it
cycles off.
7. Adjust the air compressor’s output
regulator so that the air output is
enough to properly power the tool,
but the output shall not exceed the
tool’s maximum air pressure at any
time. Adjust the pressure gradually,
while checking the air output gauge
to set the right pressure value.
8. Inspect the air connections for leaks.
Repair any leaks found.
9. If the tool will not be used at this
time, turn off and detach the air sup-
ply, safely discharge any residual air
pressure, and release the throttle
and/or turn the compressor switch to
its off position to prevent accidental
operation.
Installing a Chisel
Note: All part numbers refer to the As-
sembly Diagram and Parts List on
Pages 16 and 17.
1.
Fig. 1
To install a Chisel (not included but
are offered exclusively from Harbor
Freight Tools), first determine which
type of Chisel is appropriate for job at
hand.
a. For chipping in straight lines, you
should use a Flat Tip Chisel.
b. For breaking up concrete, use a
Pointed Tip Chisel.
2. As shown (see Fig. 1), using a wire or
screw driver or simply your fingers to