• Position jack under vehicle or other object to be lifted. Always be sure lift pad or lift point is centered
• Front wheels and casters of floor jacks must be free of obstructions so the jack can travel under load. Otherwise the lifting pad is liable to slip off or put undue strain on point being lifted. Vehicle must be out of gear and brake released when lifting.
• To lift - turn handle or release knob clockwise and pump. If jack is air-bound, open release by turning handle or knob counter-clockwise, hold open and pump rapidly about 4 full strokes. Then close release and pump jack to full height without load. Open release and lower jack. THIS STEP MAY HAVE TO BE REPEATED SEVERAL TIMES TO BLEED ALL THE AIR FROM JACK

• Oil front wheels, caster bearings, all linkages and moving parts periodically
• Grease lift arm at grease fitting (if so equipped) and lower end of handle at yoke casting

USE JACK FOR LIFTING ONLY. TO INSURE SAFETY, ALWAYS SUPPORT VEHICLE OR LOAD WITH STANDS OR OTHER SUITABLE DEVICES SUCH AS TIMBERS, ETC.

Parts List & Operating Instructions Preventive Maintenance IMPORTANT: The greatest single cause of failure in hydraulic units is dirt. Keep the transmission jack clean and well lubricated to prevent foreign matter from entering the system. If the jack has been exposed to rain, snow, sand, or grit, it must be cleaned before it is used. 1. Store the jack in a well-protected area where it will not be exposed to corrosive vapors, abrasive dust, or any other harmful elements. 2. Lubricate moving parts at least once per month. 3. Regularly wipe the cylinder columns with a clean cloth to remove dirt and abrasives. 4. Inspect the jack before each use.

Take corrective action if any of the following problems are found: a. Cracked or damaged housing d. Scored or damaged piston rod b. Excessive wear, bending, or other damage e. Loose hardware c. Leaking hydraulic fluid f. Modified or altered equipment

WE CAME ACROSS A WEB SITE THAT CONTAINS VALUABLE INFORMATION ON HOW TO REPAIR HYDRAULIC JACKS. WE INVITE YOU TO VISIT OTTO SERVICE'S WEB SITE AT: WWW.HYJACKS.COM/H7.HTM.

CONDITION-Jack does not rise when pumped

CAUSE-Release valve not closed.Valve balls not seated. Jack out of oil

CORRECTION-Twist handle clockwise. Remove valve balls and clean. Reseat by tapping balls lightly on their seats using a brass rod & small hammer. Check oil level and fill to proper level.

CONDITION

CAUSE-Low oil level

CORRECTION-Lower jack to down position. Remove oil filler plug. Add clean HYDRAULIC JACK OIL to cover the cylinder or, if an upright jack, to the fill hose in the reservoir. DO NOT USE BRAKE FLUID or STANDARD HYDRAULIC OIL!!. Use ONLY HYDRAULIC JACK OIL.