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• Remove spark arrester screen for cleaning and inspection.
• Replace if screen is damaged.
After Each Use
Water should not remain in the unit for long periods of time.
Sediments or minerals can deposit on pump parts and freeze
pump action. Follow these procedures after every use:
1. If the detergent siphoning system was used, clean the
tube as described in Cleaning Detergent Siphoning Tube.
2. Shut off engine, turn off water supply, point gun in a
safe direction, and squeeze trigger to relieve trapped
pressure, and let engine cool.
3. Disconnect hose from spray gun and high pressure
outlet on pump. Drain water from hose, spray gun, and
nozzle extension. Use a rag to wipe off the hose.
4. Empty pump of all pumped liquids by pulling recoil handle
about six times. This should remove most liquid in pump.
5. Store unit in a clean, dry area.
6. If storing for more than 30 days, see Long Term
Storage on next page.
Pump Maintenance
For longest lasting service, follow the instructions given in
the pump maintenance check list.
IMPORTANT: Use 0.53 liter (18 ounces) of CAT Pump 6107
multi-viscosity oil. Oil alternatives include Mobil DTE16,
Texaco Rondo 1660-HD150, Amoco Rykon-68, Shell Tellus
T-68, and Exxon Univis-68.
Check Pump Oil
1. Place pressure washer on a level surface.
2. While pump and oil is cold, observe oil level visible in
pump’s oil sight gauge.
3. Oil level should be visible and centered on red dot (B).
If necessary, slowly add recommended oil through
pump’s oil filler opening until oil level is centered on
red dot. DO NOT fill above red dot!
Changing Pump Oil
1. Place pressure washer on an outside level surface.
2. Engage trigger lock on spray gun and start engine
following instructions How to Start Your Pressure
Washer. Let pressure washer run for at least 5 minutes.
3. Shut off engine, turn off water supply, point gun in a
safe direction, and squeeze trigger to relieve trapped
pressure.
IMPORTANT: Spray gun traps high water pressure, even
when engine is stopped and water is disconnected.
4. Disconnect spark plug wire from spark plug.
5. Place suitable container under oil drain hole.
6. Remove pump’s oil filler cap (A) and o-ring.
7. Remove oil drain plug (C) and let oil drain out
completely.
8. Gently replace oil drain plug and tighten securely
(50 in-lbs max. torque).
WARNING
Fuel and its vapors are extremely flammable and
explosive.
Fire or explosion can cause severe burns or
death.
WHEN STORING FUEL OR EQUIPMENT WITH FUEL IN TANK
• Store away from furnaces, stoves, water heaters, clothes dryers,
or other appliances that have pilot light or other ignition source
because they can ignite fuel vapors.
WARNING
The high pressure stream of water that this
equipment produces can cut through skin and its
underlying tissues, leading to serious injury and
possible amputation.
Spray gun traps high water pressure, even when
engine is stopped and water is disconnected,
which can cause injury.
• Keep high pressure hose connected to pump and spray gun
while system is pressurized.
• ALWAYS point spray gun in safe direction and squeeze spray
gun trigger, to release high pressure, every time you stop
engine. Engage trigger lock when not in use.
WARNING
The high pressure stream of water that this
equipment produces can cut through skin and its
underlying tissues, leading to serious injury and
possible amputation.
Spray gun traps high water pressure, even when
engine is stopped and water is disconnected,
which can cause injury.
• Keep high pressure hose connected to pump and spray gun
while system is pressurized.
• ALWAYS point spray gun in safe direction and squeeze spray
gun trigger, to release high pressure, every time you stop
engine. Engage trigger lock when not in use.
B
C
A