Maintenance
Observe regular maintenance intervals to ensure maximum
performance and life from the pressure washer. Refer to the
schedule for recommended maintenance. If you operate the
pressure washer in dusty conditions, perform maintenance
checks more often.
ENGINE OIL CHANGING INSTRUCTIONS
Before tipping the engine or equipment to drain
oil, drain fuel from the fuel tank.
NOTE: Change oil while the engine is cool.
1. Disconnect the spark plug wire from the spark plug.
2. Locate and remove the engine oil drain plug (See Figure 22).
3. Drain old oil.
4. Replace the drain plug and set the unit upright.
5. Refill the unit with new oil of a recommended type and
quantity. Fill the unit to the bottom edge of the oil fill neck.
MAINTENANCE SCHEDULE
Maintenance Schedule
Daily
After first 5 hours of
operation
Every 25 hours of operation
Every 50 hours of operation
Each 100 hours of operation
or every 3 months
Action needed
• Check water inlet screen and
filter.
• Check engine oil levels. Fill as
necessary.
• Check gasoline level. Fill as
necessary.
• Change engine break-in oil.
Use 10W-30 automotive
detergent oil. See your
Honda Owner's manual for
specific information.
• Change oil if operating under
heavy load or high ambient
temperature.
• Clean or replace paper air
cleaner cartridge. Tap gently
to remove dirt.
• Change oil.
• Replace spark plug.
• Replace paper air cleaner
cartridge.
• Change engine oil.
Models MX5223, MX5333 and MX5433
PUMP OIL CHECKING / CHANGING INSTRUCTIONS
Please refer to provided Pump Specification page provided with
your Pressure Washer for details.
Oil Drain
Figure 22 - Oil drain and fill locations
TECHNICAL AND CONSUMER INFORMATION
Horizontal Oriented Pressure Washers
Engine Oil Type
Engine Oil Capacity
Honda GX160
Honda GX270
Honda GX390
Engine Fuel Capacity
Honda GX160
Honda GX270
Honda GX390
Pump Oil Type
Pump Oil Capacity
CAT Pumps
3DNX25
3SPX30
66DX35
Pump Detergent Suction
Water to detergent ratio
Water Supply Requirements
Minimum inlet pressure
Maximum inlet pressure
Maximum inlet
temperature
Minimum inlet flow rate
Inlet garden hose size
Maximum inlet garden
hose length
Oil Fill
SAE 10W-30
(See Honda's Owner Manual)
20 fl. oz.
37 fl. oz.
37 fl. oz.
3.3 US quarts (3.1 L)
5.6 US quarts (5.3 L)
6.4 US quarts (6.1 L)
CAT pump oil
8.5 fl. oz.
10.15 fl. oz.
18 fl. oz.
10 to 1 (10% detergent)
20 psi
100 psi
100° F
5 gpm
5/8 inch I.D.
50 feet
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