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Napa 791-6402 A - User Manual

Napa 791-6402 A
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791-6402 A 1 03/07/17
Capacity ................................................................................. 2 Tons
Low Height ..............................................................................
2-7/8"
High Height .......................................................................... 19-5/8"
Handle Length .............................................................................50"
Overall Length .....................................................................
28-7/8"
Overall Width ....................................................................... 13-1/2"
Saddle Diameter .....................................................................4-3/4"
Shipping Weight ................................................................... 75 Lbs.
MODEL # 791-6402 A
2 TON CAPACITY
LOW PROFILE SERVICE JACK
SPECIFICATIONS
BEFORE USING THIS DEVICE, READ THIS
MANUAL COMPLETELY AND THOROUGHLY,
UNDERSTAND ITS OPERATING
PROCEDURES, SAFETY WARNINGS AND
MAINTENANCE REQUIREMENTS.
It is the responsibility of the device owner to make sure all personnel
read this manual prior to using the device. It is also the responsibility
of the device owner to keep this manual intact and in a convenient
location for all to see and read. If the manual or product labels are lost
or not legible, contact NAPA for replacements. If the operator is not
fluent in English, the product and safety instructions shall be read to
and discussed with the operator in the operator's native language by
the purchaser/owner or his designee, making sure that the operator
comprehends its contents.
• Read, study, understand and follow all instructions before op-
erating this device. • Inspect the jack before each use. Do not
use jack if damaged, altered, modied, in poor condition, leak-
ing hydraulic uid, or unstable due to loose or missing compo-
nents. Make corrections before using. • Lift only on areas of the
vehicle as specied by the vehicle manufacturer. Wear eye
protection that meets ANSI Z87.1 and OSHA standards (user
and bystanders). • Do not use jack beyond its rated capacity.
Do not shock load • This is a lifting device only. Immediately
after lifting, support the vehicle with jack stands capable
of sustaining the load before working on the vehicle • Use
only on a hard level surface free from obstructions so the jack
is free to reposition itself during lifting and lowering operations.
• Center load on saddle. Be sure setup is stable before working
on vehicle. • Do not move or dolly the vehicle while on the jack.
• Do not use any materials that may serve as risers, spacers or
extenders between the stock lifting saddle and the load. • Do
not use any adapters that replace the stock lifting saddle unless
approved or supplied by the jack manufacturer. • Do not use (or
modify) this product for any other purpose than that for which it
was designed without consulting the manufacturer's authorized
representative. • Always lower the jack slowly and carefully.
Failure to heed these warnings may result in serious or fatal
personal injury and/or property damage.
WARNING
WARNING: This product can expose you to chemicals
including nickel, which is known to the State of
California to cause cancer and birth defects or other
reproductive harm. For more information go to www.
P65Warnings.ca.gov.
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ASME PASE-2014

Questions and Answers

  • P
    Patricia MontgomeryAug 5, 2025
    What to do if my Napa 791-6402 A unit will not lift the rated load?
    • Z
      zedwardsAug 5, 2025
      If your Napa Jacks unit isn't lifting the rated load, you should purge air from the hydraulic system. Follow the procedure outlined under the SETUP section to complete this process.
  • B
    brandon03Aug 12, 2025
    Why does my Napa 791-6402 A feel spongy or not sustain the rated load?
    • M
      Mark LozanoAug 12, 2025
      If your Napa Jacks unit feels spongy or fails to sustain the rated load, it's likely due to air in the hydraulic system. Purge the air from the hydraulic system by following the procedure described in the SETUP section.
  • C
    Candace SpencerAug 20, 2025
    How to fix a Napa Jacks unit that will not lift to full height?
    • K
      Kristen GallagherAug 20, 2025
      If your Napa Jacks unit isn't lifting to its full height, it may be caused by air trapped in the hydraulic system. Bleed the hydraulic system by following the procedure detailed under SETUP.
  • A
    amy39Aug 27, 2025
    What to do if the handle raises up on Napa Jacks under load?
    • M
      Melinda LeeAug 27, 2025
      If the handle of your Napa Jacks tends to raise up while the unit is under a rated load, rapidly pump the handle several times. This action helps push oil past the ball valves within the power unit, resolving the issue.

Summary

Safety Warnings and Precautions

Proper Lifting and Support Procedures

Lift only on specified vehicle areas, use eye protection, and support with jack stands immediately after lifting.

Methods to Avoid Hazardous Situations

Setup Instructions

Hydraulic System Air Purging

Procedure to remove trapped air from the hydraulic system for optimal pumping performance.

Operating Instructions

Raising a Load

Steps to raise the load, position the jack, and place jack stands correctly for support.

Lowering a Load

Procedure to safely lower the load off the jack stands and remove the jack.

Preventative Maintenance

Inspection Procedures

Troubleshooting Common Issues

Unit Not Lifting or Lifting Weakly

Purge air from hydraulic system or pump handle rapidly to resolve lifting issues.

Hydraulic Jack Maintenance Guide

Napa 791-6402 A Specifications

General IconGeneral
BrandNapa
Model791-6402 A
CategoryJacks
LanguageEnglish

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