Maintenance

Maintenance Mode

Before performing any maintenance on the pressure washer, it must be placed in maintenance mode. 1.) Turn off engine.

2.) Turn off water supply.

3.) Squeeze trigger to relieve system pressure.

4.) Unplug spark plug wire from spark plug. (see engine owner’s manual)

Maintenance Schedule

What to Check

When To Check

What to Do

Inlet Filter

Each Use

Visually inspect and clean inlet filter with clear water.

 

 

Visually inspect pressure hose and hose couplings. Replace

Pressure Hose

Each Use

hose if any of the following is evident:

 

 

hose coupling is damaged, wire mesh is exposed or damaged,

 

 

hose is permanently kinked or flattened, outer hose cover is

 

 

blistered or loose.

Bolts

Each Use

Tighten any loose bolts.

Engine Oil

See engine

See engine manual for oil change intervals, see Maintenance

 

manual

section of this manual for oil change instructions.

Pump Oil

Never

The pump’s crankcase is sealed; oil changes are not required.

Cleaning/Replacing the Nozzle Orifice

1.) Place pressure washer in maintenance mode. (see above)

2.) Insert a 2mm hex wrench into orifice and turn counter-clockwise to remove orifice from nozzle.

-To clean orifice, remove any debris and soak in descaling solution to remove hard water deposits.

-To replace orifice, order p/n

PD38780 from NorthStar Customer Service, 1-800-270-0810

3.) Use 2mm hex wrench and turn clockwise to reinstall orifice.

2mm hex wrench

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North Star M157471A owner manual Maintenance Mode