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10.0 Troubleshooting the JSJ-2-1/4XA Service Jack
Symptom Possible Cause Correction
Jack fails to lift load, or
only partially lifts.
Release valve open. Close valve by rotating handle clockwise.
Weight capacity exceeded. Use other lifting equipment; load must not
exceed rated capacity of jack.
Low hydraulic fluid. With jack on level ground, lower saddle
completely. Remove fill plug and check oil
level. Fill as needed with approved
hydraulic fluid. Reinstall fill plug.
Jack fails to rise to
height limit.
Low hydraulic fluid. With jack on level ground, lower saddle
completely. Remove fill plug and check oil
level. Fill as needed with approved
hydraulic fluid. Reinstall fill plug.
Jack fails to hold load
in raised position.
Release valve open. Close valve by rotating handle clockwise.
Jack oil leaks Reservoir overfilled. Drain some oil from reservoir.
Seals are worn. Have seals replaced by authorized service
center.
Handle won’t pump full
stroke.
Air in system. Bleed air from system by opening release
valve and pumping handle several times.
11.0 Replacement Parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-
800-274-6848 Monday through Friday (see our website for business hours, www.jettools.com). Having the
Model Number and Serial Number of your machine available when you call will allow us to serve you quickly
and accurately.