Power Fist 8505547, User Manual

14.4V Cordless Grease Gun

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For technical questions call: 1-800-665-8685

V 3.03 

8505547

MAINTENANCE

1.  Make sure the trigger switch is in the OFF position, the battery is removed from the 

grease gun, and the charger is unplugged from the electrical outlet before performing any 

inspection, maintenance, or cleaning.

2.  Check the general condition of the grease gun before each use. Check for misaligned or 

binding moving parts, cracked or broken parts, leaking battery packs, damaged hoses, and 

any other conditions that may affect the safe operation of the grease gun. If abnormal noise 

or vibration occurs, have the problem corrected before further use. Do not use  

damaged equipment.

3.  Daily maintenance: Use a soft, dry cloth to remove all dirt, grease, and debris from the 

exterior of the grease gun. Do not use solvents to clean the grease gun.

4.  Use only identical replacement parts when servicing. Only use accessories that are intended 

for use with this tool.

5.  If repairs are required, bring your tool to an authorized service centre.

STORAGE 

When storing, always remove the battery pack from the grease gun. Keep the grease gun and its 

accessories in a clean, dry location and out of the reach of children.

DISPOSING OF THE TOOL

1.  If your tool has become damaged beyond repair, do not throw it out. Bring it to the 

appropriate recycling facility.

2.  Do not incinerate battery packs. Battery packs may explode when exposed to high heat.

TROUBLE SHOOTING

Problem(s)

Possible cause(s)

Suggested solution(s)

Motor does not run.

1.  Battery discharged

2.  Faulty wiring

1.  Recharge the battery.

2.  Take the unit to a qualified 

service centre.

Pressure relief valve  

remains open.

1.  Blockage in the line or the 

grease fitting.

1.  Check the hose and the 

grease fitting.

2.  Remove and clean

Gun does not  

dispense grease.

1.  Grease tube is empty.

2.  Air in the pump.

1.  Refill the grease tube.

2.  Purge the air pockets or re-

prime the gun

Continuous loss of prime.

1.  Air pockets

2.  Plunger is binding in the 

grease tube assembly.

3.  Worn or faulty  

pump piston.

1.  Empty the grease tube 

assembly, refill,  

and re-prime.

2.  Take the unit to a qualified 

service centre.