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18- ENG
MAINTENANCE
WARNING: Risk of burn hazard. When performing maintenance, you may
be exposed to hot surfaces, water pressure or moving parts that can cause
serious injury ordeath.
WARNING: Risk of fire hazard. Always disconnect, spark plug wire,
let the engine cool and release all water pressure before performing any
maintenance or repair. The engine contains flammable fuel. Do not smoke or
work near open flames while performingmaintenance.
To ensure efficient operation and longer life of your pressure washer, a routine
maintenance schedule should be prepared and followed. If the pressure washer is
used in unusual conditions, such as high-temperatures or dusty conditions, more
frequent maintenance checks will berequired.
ENGINE
Consult the Engine Owner's Manual for the manufacturer's recommendations
for any and all maintenance. NOTE: The engine drain plug is located at the rear of
theunit.
PUMP (FIG. 15)
NOTE: The Pump was filled with oil at the factory. The preferred oil is SIMPSON
®
Premium Pump Crankcase Oil. If this oil is not available, an SAE 15W-40 oil may
be used. Change the pump oil after the first 50hours of operation and every 100
hours thereafter, or every 3months.
TO CHECK OIL
The oil level should come to the dot in the middle of
15
CC
AA
BB
the sight glass (AA).
HOW TO CHANGE PUMP OIL
1. Loosen pump oil fill plug (BB).
2. Place a container under the pump oil drain plug
(CC).
3. Remove pump oil drainplug.
4. After oil is drained, replace pump oil drain plug.
Tightensecurely.
5. For AAA
TM
pumps, refill using SIMPSON
®
Premium Pump Crankcase Oil. If this
oil is not available, an SAE 15W-40 oil may be used.
For CAT Pumps
®
***, refill using a non-detergent hydraulic oil (ISO 68).
6. Replace pump oil fill plug and tightensecurely.
If there is a problem with the pump contact us at www.simpsoncleaning.com
*** CAT PUMPS
®
is a registered trademark of Diversified Dynamics Corporation.
CONNECTIONS
Connections on pressure washer hoses, gun and spray wand should be cleaned
regularly and lubricated with light oil or lithium grease to prevent leakage and
damage to the o-rings.
NOZZLE CLEANING (FIG. 16)
If the nozzle becomes clogged with foreign materials, such as dirt, excessive
pressure may develop. If the nozzle becomes partially clogged or restricted, the
pump pressure will pulsate. Clean the nozzle immediately using the nozzle kit
supplied and the following instructions:
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