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14 Section 6 — Maintenance
Figure 6-2
5. Direct water supply into nozzle to backflush
loosened particles for 30 seconds.
6. Reconnect the nozzle to the wand.
7. Reconnect spray wand to gun and turn on
water supply.
8. Start pressure washer and place spray wand
into high pressure setting to test.
Changing the Water Inlet Filter
This screen filter should be checked periodically and
cleaned if necessary.
1. Remove filter by grasping end and removing
it from the screen filter on the garden hose
fitting to the water tank. .
2. Insert a new or cleaned a new filter into pump
water inlet.
NOTE: Periodically check and clean the blue
cap filter on the inlet of the pump.
NOTE: Convex side faces out. See Figure 6-3.
Figure 6-3
NOTE: Do not operate the pressure washer without
the filter properly installed.
Engine Care
A list of key engine maintenance jobs required for
good performance by the pressure washer is given
below. Follow the accompanying engine manual for
a detailed list and instructions.
• Maintain oil level as instructed in engine
manual
• Maintain oil level as instructed in engine
manual.
• Service air cleaner as instructed in engine
manual. Clean every few hours under
extremely dusty conditions. Poor engine
performance and flooding usually indicates
that the air cleaner should be serviced. To
service the air cleaner, refer to the engine
manual.
• Clean spark plug and reset the gap once
a season. Spark plug replacement is
recommended at the start of each mowing
season. Check engine manual for correct plug
type and gap specifications.
• Clean engine regularly with a cloth or brush.
Keep the top of the engine clean to permit
proper air circulation. Remove all grass, dirt,
and combustible debris from muffler area.
• Engines stored between 30 and 90 days need
to be treated with a gasoline stabilizer to
prevent deterioration and gum from forming
in fuel system or on essential carburetor parts.
Service
Do not return this product to your retailer without
first contacting Simpson. Our contact information is
located on the table of contents page.
Off-Season Storage
The following steps should be taken to prepare your
pressure washer for storage.
• Drain all water from high pressure hose and
wrap it onto hose wrap. Drain all the water out
of the water reservior.
• Drain all water from the spray gun and wand
by holding spray gun in a vertical position
with nozzle end pointing down and squeezing
trigger. Store in gun holder.
• Wrap up and secure detergent siphon hose so
it is protected from damage.
• Refer to engine manual for correct engine
storage instructions.
• Store pressure washer in a dry, clean area. Do
not store next to corrosive materials, such as
fertilizer.
When storing any type of power equipment in a
poorly ventilated or metal storage shed, care should
be taken to rust-proof the equipment. Using a light
oil or silicone, coat the equipment, especially cables
and all moving parts of your trailer before storage.
Pump
The manufacturer recommends using a pressure
washer pump cleaner when storing the unit more
than 30 days or when freezing temperatures are
expected.
NOTE: Using pump cleaner helps provide proper
lubrication to the internal seals of the pump
regardless of temperature or environment.
NOTICE: Risk of property damage. Avoid products
that are corrosive and/or contain alcohol which may
cause pump damage.
1. Turn off pressure washer and disconnect hoses
from pump.
NOTICE: Prior to continuing, the water tank must be
completely drained of water.
2. Unscrew bottle valve from bottle and remove
seal.
3. Screw bottle valve back onto bottle.
NOTE: In order to pour RV anti-freeze into the
system, use a 2-way valve.
4. Attach bottle to water inlet of pump.
5. Squeeze bottle to inject contents into pump.
6. With ignition switch off, simultaneously pull
starter rope and squeeze bottle. Repeat until
protector fluid exits pump outlet.
NOTE: This step may require two people.
WINTERIZATION:
1. Empty water tank.
2. Mix 1 part anti-freeze with 1 part water. Fill
into water tank.
3. Remove nozzle from spray gun and pointed
into water tank, turn on Engine and pull
trigger until anti-freeze exits the spray gun
back into water tank.
4. Shut off Engine.
Pump
NOTE: The Pump was filled with oil at the factory.
Change the pump oil after the first 50hours of
operation and every 100 hours thereafter, or every 3
months.
To Check Pump Oil
The oil level should come to the dot in the middle of
the sight glass. See Figure 6-1.
Oil Fill Plug
Sight Glass
Oil Drain Plug
Figure 6-1
To Change Pump Oil
1. Loosen pump oil fill plug
2. Place a container under the pump oil drain
plug.
3. Remove pump oil drain plug.
4. After oil is drained, replace pump oil drain
plug. Tighten securely.
5.
Refill pump using oil recommended by pump
manufacturer.
6. Replace pump oil fill plug and tighten securely.
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
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:
1. Shut off the pressure washer and turn off the
water supply.
2. Pull trigger on gun handle to relieve any water
pressure.
3. Disconnect the spray wand from the gun.
4. Remove the high pressure nozzle from the
spray wand. Remove any obstructions with the
nozzle cleaning tool provided and backflush
with clean water. See Figure 6-2. water.
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