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Low Oil Sensor
The rental washer is equipped with a low-oil sensor that
shuts the engine off if the oil level falls below a safe
level. If the unit stops unexpectedly, check both the oil
and fuel levels.
The oil level should be checked each time the unit is
refueled.
Observing a regular maintenance schedule helps
ensure you get maximum performance for the life of the
Rental Washer.
If the unit is operating in dusty conditions, these
maintenance checks should be made more often.
Follow Pressure Relief Procedure,
page 4.
Interval
Daily
Clean water inlet screen and filter.
Check engine and pump oil levels.
Fill as necessary. Check gasoline
level. Fill as necessary.
After first 5
Change engine break-in oil. Drain oil
hours of
when warm. Use SAE 30 or 10W-30
operation
detergent oil.
Each 25 hours
Clean and remove air cleaner foam.
Wash with water and detergent. Dry
thoroughly. Rub with oil and squeeze
to distribute oil.
After first 50
Change pump break-in oil. Use
hours
Graco pump oil 246377 or SAE 30
non-detergent oil.
•
Clean or replace paper air
Each 100
cleaner cartridge. Tap gently to
hours
remove dirt.
•
Change engine oil. Use SAE 30
or 10W-30 detergent oil.
Each 500
Change pump oil. Use Graco pump
hours or every
oil 246377 or SAE 30 non-detergent
6 months
oil.
309578B
Maintenance
WARNING
What to do
Fuel Specifications
WARNING
page 2.
•
Use unleaded automotive gasoline with a pump
octane of 86 or higher.
•
Do not use mixtures of oil and gasoline or contami-
nated gasoline.
Freezing Temperatures
If Rental Washer will be exposed to freezing
temperatures:
1. Drain all water out of pump.
2. Flush unit with a 50% anti-freeze solution.
3. Relieve pressure.
4. Flush pressure washer before using it again to
remove anti-freeze.
CAUTION
If water freezes in RentalPro, thaw in warm room before
trying to start it.
Do not pour hot water on or into pump. Hot water may
crack ceramic plungers.
Maintenance
5
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