791-6431 A
3
rev. 03/05/18
SETUP
PLEASE REFER TO THE EXPLODED VIEW DRAWING IN THIS MANUAL IN ORDER TO IDENTIFY PARTS.
1. Depress the #28 handle pin in the #30A upper handle assembly while simultaneously inserting the end of the upper handle
assembly in the #27 lower handle. Rotate the upper handle back and forth until the handle pin seats in the hole in the lower
handle.
2. Unscrew the #25 handle bolt so that it will not interfere with the insertion of the handle assembly in the #21 handle socket. Insert
the #27 handle in the #21 handle socket and rotate the handle assembly back and forth until the release valve fits in the
receiver in the bottom of the handle. Secure the handle in the handle socket by tightening the #25 handle bolt.
3. Sometime air gets trapped in the hydraulic system during shipping and handling. If the pump feels spongy, or there is not a full
incremental pump stroke, or the jack will not raise to maximum height, follow these instructions in order to purge air from
the system:
a. With the lift arm in its completely retracted position and the pump handle rotated all the way in a clockwise direction until it
stops, rotate the pump handle in a counterclockwise direction two full revolutions.
b. Proceed to pump the jack 15 full incremental pump strokes.
c. Rotate the pump handle clockwise until it stops and proceed to pump the handle until the lift arm reaches maximum height.
d. Repeat steps "A" through "C" until all air is purged from the system.
OPERATING INSTRUCTIONS
This is the safety alert symbol used for the OPERATING INSTRUCTIONS section of this manual to alert you to potential
personal injury hazards. Obey all instructions to avoid possible injury or death.
IMPORTANT:
Before attempting to raise
any vehicle, check vehicle service manual for recommended lifting surfaces.
OPERATION:
1. Put vehicle transmission in park or in gear and then apply the emergency brake.
To raise load:
Turn the handle in a clockwise direction until tight. Position the jack under the load. Proceed to pump the handle
in order to raise the lift arm to the load. As the saddle at the end of the lift arm gets closer to the load, reposition the jack so the
saddle will contact the load firmly and the load is centered on the saddle. Make sure the saddle is correctly positioned. Raise the
load to the desired work height. Place jack stands of appropriate capacity at the vehicle manufacturers's recommended support
areas that provide stable support for the raised vehicle.
DO NOT CRAWL UNDER VEHICLE WHILE LIFTING VEHICLE OR
PLACING OR REMOVING THE JACK STANDS!
Once jack stands are positioned, turn the jack handle VERY SLOWLY in a
counterclockwise direction to lower the load to rest on the jack stands. Inspect the relationship between the jack stands and load
to make sure the setup is stable and safe. If the setup is not stable or safe, follow the preceding steps until corrected.
2.
To lower load:
Follow the procedures mentioned in "To raise load" section of the OPERATING INSTRUCTIONS in order to raise
the load off the jack stands. Once the load has cleared the jack stands, remove the jack stands from under the load and away
from the work area. Turn handle very slowly in a counterclockwise direction until the load is completely lowered to the ground.
Once the jack's lifting saddle has cleared the load, remove the jack from under the load.
CAUTION:
Keep hands and feet away
from the hinge mechanism of the jack.
DO NOT CRAWL UNDER VEHICLE WHILE LIFTING VEHICLE OR PLACING OR
REMOVING THE JACK STANDS!
PREVENTATIVE MAINTENANCE
This is the safety alert symbol used for the PREVENTATIVE MAINTENANCE section of this manual to alert you to potential
personal injury hazards. Obey all instructions to avoid possible injury or death.
1. Always store the jack in a well protected area where it will not be exposed to inclement weather, corrosive vapors, abrasive
dust, or any other harmful elements. The jack must be cleaned of water, snow, sand, grit, oil, grease or other foreign matter
before using.
2. The jack must be lubricated periodically in order to prevent premature wearing of parts. A general purpose grease must be
applied to caster wheels, front axle, elevator arm, handle base pivot bolts, release mechanism and all other bearing surfaces.
Worn parts resulting from inadequate or no lubrication are not eligible for warranty consideration. See page 5 for lubrication
instructions.
3. It should not be necessary to refill or top off the reservoir with hydraulic fluid unless there is an external leak. An external leak
requires immediate repair which must be performed in a dirt-free environment by an authorized service center.
IMPORTANT: In order to prevent seal damage and jack failure, never use alcohol, hydraulic brake fluid, or transmission oil in the jack.
Use NAPA Hydraulic Jack Oil #765-1541.
4. Every jack owner is responsible for keeping the jack labels clean and readable. Use a mild soap solution to wash external
surfaces of the jack but not any moving hydraulic components.
5. Inspect the jack before each use. Do not use the jack if any component is cracked, broken, bent, shows sign of damage or leaks
hydraulic fluid. Do not use the jack if it has loose or missing hardware or components, or is modified in any way. Take corrective
action before using the jack again.
OPERATING MANUAL & PARTS LIST FOR 791-6431 A
