Troubleshooting - NorthStar M15781120F Owner's Manual

This section provides a list of the more frequently encountered pressure washer malfunctions, their causes and
corrective actions. Some corrective actions can be performed by the operator or maintenance personnel,
and others may require assistance of a qualified Service Center.
Causes
Low Oil Shutdown
Cold Engine
No Fuel
Pressure build-up from initial use
Engine not turned ON
Spark plug wire not attached
Causes
Insufficient water supply
Plugged inlet screen
Need to use high pressure nozzle
Plugged nozzle
Worn nozzle
Leak in high pressure line
Causes
Need to use different nozzle
Back pressure from extra-long hose
Leak in clear chemical hose
Chemical strainer not submerged

Troubleshooting

ENGINE WILL NOT START
Solutions
Fill engine with the adequate amount of oil
Choke engine to start
Add gas to fuel tank - Make sure fuel shutoff valve is open
Trigger spray gun to relieve pressure
Place ON/OFF switch in the ON position
Attach spark plug wire to spark plug
LOW/SURGING PRESSURE
Solutions
Increase water flow - Check for kinked or pinched hose
Pull out and clean screen carefully
Change to the green, yellow, white, or red nozzle
Remove nozzle, check for blockage
Replace nozzle
Fix leaks
NO CHEMICAL INJECTION
Solutions
Change to the black nozzle
Try shorter high pressure hose
Replace hose. Use hose clamps if necessary
Make sure strainer is completely submerged in solution
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