Jet-Set JM-1450™
8
TROUBLE SHOOTING GUIDE
Problem
Probable Cause
Solution
Low pressure.
Worn, clogged, or oversized nozzle.
Clean or replace worn nozzle. Check nozzle size.
Clogged water inlet strainer.
Clean or replace strainers.
Inadequate water supply.
Make certain water supply valve is on fully. Make certain water
supply hose is at least 3/4” in diameter, in good condition, with
no kinks or damage, and is not longer than 50 ft.
Worn or damaged piston cups.
Replace piston cups.
Worn or damaged inlet or discharge valve.
Replace worn valve poppets or valve springs.
Dirt or foreign particles in valve assembly.
Remove any dirt particles.
Air leak in inlet plumbing.
Locate air leak. Re-seal connection or replace damaged port.
Rough operation with loss of
pressure.
Restricted inlet plumbing or air leak in inlet
plumbing.
Repair clogged inlet fittings. Check supply hose and ensure
adequate water supply.
Damaged piston, cup or pump valve.
Replace any damaged pump parts and clean out any foreign
particles.
Clogged nozzle.
Clean or replace nozzle.
Water leakage at intake
manifold or crankcase.
Worn manifold seals, piston or o-rings, or
condensation inside crankcase.
Replace seals, sleeves or o-rings. Change oil at regular inter-
vals.
Inadequate water supply to pump, creating a
vacuum lock.
Ensure adequate tap water supply. Clear inlet filter.
Oil leaks.
Worn pistons and/or leaking crank seals,
crankcase cover seal, or drain plugs.
Replace seals, sleeves or o-rings.
Excessive wear.
Worn or loose bearings.
Replace bearings. Check bearing seals, spacers and retainers.
Replace any worn parts.
Scored cylinders from pumping acids.
Replace cylinders. Do no pump acid solutions. For acid applica-
tion, ask your dealer for a pump saver injector.
Short piston cup life.
Abrasive particles in fluid being pumped.
Replace water and detergent strainers if damaged or missing.
Install additional filter if fine abrasives are still evident.
Operator(s) running pump without water
supply.
Do no allow washer to be run without proper water supply.
Hot water in pump.
Do not run in bypass for more than 5 minutes. Do not let water
supply exceed 140°F (60°C).
Irregular spray pattern.
Worn or partially clogged nozzle.
Clean or replace nozzle.
Summary of Contents for JM-1450
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