Patron PHG-40 User manual

10/2020 85.610.380
USER MANUAL
HOT WATER
PRESSURE WASHER
PHG-40

2
TABLE OF CONTENTS
INTRODUCTION
Introduction & Identication Numbers .............................................................. 3
IMPORTANT SAFETY WARNINGS
Important Safety Warnings & Symbols ............................................................. 4
GENERAL INFORMATION
Product Features & Components ....................................................................... 7
SET-UP
Water Supply ..................................................................................................... 8
How to Use Spray Tips ...................................................................................... 9
OPERATION
Pre-Operation Safety & Inspection Procedures ............................................... 10
Start-Up Procedure Preparation .................................................................... 10
Starting The Unit ............................................................................................. 11
Hot Water Operation & Detergent Use ........................................................... 13
Shutting the Unit Down & Storage ................................................................. 14
MAINTENANCE
Specic Maintenance ...................................................................................... 15
Maintenance Schedule ................................................................................... 16
UNIT BREAKDOWNS
Unit Breakdown ............................................................................................... 17
Parts Reference List ....................................................................................... 18
Burner Breakdown .......................................................................................... 19
Pump Breakdown ........................................................................................... 20
Control Panel Wiring Diagram ......................................................................... 21
TROUBLESHOOTING
Troubleshooting Table ................................................................................... 22

3
INTRODUCTION & PRODUCT INFO
Using the Operator's manual
The operator's manual is an important part of your pressure washer. It should be read thoroughly before
initial use, and referred to often to make sure adequate safety and service concerns are being addressed.
Reading the operator's manual thoroughly will help avoid any personal injury or damage to your machine.
By knowing how best to operate this machine, you will be better positioned to show others who may also
operate the unit.
This manual was written to take you from the safety requirements to the operating functions of your machine.
You can refer back to the manual at any time to help troubleshoot any specic operating functions, so store
it with the machine at all times.
Record Identication Numbers
If you need to contact an Authorized Dealer or Customer Service line (1-800-818-1199) for information on
servicing, always provide the product model and identication numbers.
You will need to locate the model and serial number for the pump and record the information in the spaces
provided below.
Date of Purchase:
Dealer Name:
Dealer Phone:
PRODUCT IDENTIFICATION NUMBERS
Model Number:
Serial Number:
ATTENTION: Read through the complete manual prior
to the initial use of your pressure washer.

4
IMPORTANT SAFETY WARNINGS
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or death.
explosion fire
toxic fumes
hot surface
flying objects injection
moving parts
electric shock
DANGER This is indicates a hazard which, if not avoided, will result in serious injury or death.
WARNING This indicates a hazard which, if not avoided, will result in a severe injury or property
damage.
CAUTION This indicates a hazard which, if not avoided, might result in a minor or moderate
injury.
NOTICE This indicates a situation that could result in equipment damage or damage to other
property. Ensure all safety messages are observed and adhered to.
HAZARD SYMBOLS AND MEANINGS
DANGER
• Always operate the pressure washer in a well-ventilated area free of ammable vapors, combustible
dust, gases, or other combustible materials.
• Do not store the pressure washer near an open ame or any equipment such as a stove, furnace, water
heater, etc., which utilizes a pilot light or sparking device.
• Do not use this pressure washer to spray ammable material.
• Do not smoke while lling burner fuel tank.
• Never ll the fuel tanks while the pressure washer is running or hot. Allow unit to cool for two minutes.
• Always refuel slowly to avoid the possibility of spilled fuel which may cause a risk of re.
• Always leave room for fuel to expand in the gas tank. Do not overll.
• Engine Fuel Tank: If using a Gasoline Engine, refuel with gasoline only. Do not use diesel or kerosene.
• Burner Fuel Tank (Black): When refueling the Burner Fuel Tank, use No. 1 or No. 2 fuel oil/diesel or
kerosene. Do not use gasoline.
• Do not operate the unit if gasoline or diesel fuel is spilled. Wipe the pressure washer clean and move it
away from the spill. Avoid creating any ignition until the gasoline or diesel fuel has evaporated.
• When the battery is being activated, hydrogen and oxygen gases in the battery are extremely explosive.
Keep open sparks and ames away from the battery at all times, especially when charging.
• Be certain to disconnect the battery ground terminal before servicing. When disconnecting the cable
from the battery, start with the negative terminal. When connecting them, start with the positive cable.
• When charging the battery, remove the battery vent plugs.
• Use only a voltmeter or hydrometer to check a battery charge.
• DO NOT jump start the battery unless both batteries are of equal voltage and amperage.

5
IMPORTANT SAFETY WARNINGS
WARNING
Serious injury or death may occur from a re caused by a mufer spark.
Serious injury or death may occur if system safety's are not properly maintained.
• A spark arrester must be added to the mufer of this engine when using on land covered with any
ammable agricultural crop (hay and grain), and if they are used in or near brush or forested areas. The
arrester must be maintained in effective working order by the operator of the equipment. In the state
of California, the above is required by law. (Section 4442 and 4443 of the California Public Resources
Code.) Other states/provinces may have similar laws. Federal laws apply on Federal lands.
• This pressure washer has a Safety Relief Valve . This should never be altered, modied, removed or
made inoperative. If the device fails, replace immediately with genuine manufacturer replacement part.
WARNING
Serious injury or death may occur from inhaling engine/burner exhaust or dangerous vapors.
The engine exhaust from this product contains chemicals known to the State of California to
cause cancer, birth defects, or other reproductive harm.
• Never operate this pressure washer in an enclosed area. Always ensure there is adequate ventilation
(fresh outside air) for breathing and combustion. This will prevent the buildup of dangerous carbon
monoxide gases. Beware of poorly ventilated areas, or areas with exhaust fans which can cause poor
air exchange. This unit should only be used outdoors to ensure ventilation is never an issue.
• Follow all safety instructions provided with the materials you are spraying. Use of a respirator may be
required when working with some materials. Do not use this pressure washer to dispense hazardous
detergents.
WARNING
Serious injury or death could occur from high pressure spray penetrating the skin.
• Keep clear of nozzle and spray! Never put your hand, ngers or body directly over the spray nozzle.
• Do not direct discharge stream at self, other persons, or pets.
• This product is to be used only by trained operators.
• Always keep operating area clear of other people.
• Do not allow children to operate this unit or be in the vicinity while you operate it.
• Seek emergency medical care if spray seems to have penetrated the skin. Do not treat as a simple cut!
• High pressure hoses and fuel lines should be inspected daily for signs of wear. If evidence of failure
exists, promptly replace all suspect hoses and fuel lines to prevent the possibility of injury from the high
pressure spray. If a hose or tting is leaking, do not place your hand on the leak.
• Never operate the gun with the trigger held in the open position. To prevent accidental discharge, the
trigger gun should be securely locked when not in use.
• Before removing the spray nozzle or servicing the unit, always shut the unit off and pull the trigger of the
gun to release trapped pressure (even after you shut off the unit, there is high pressure water left in the
pump, hose and gun until you release it by pulling the trigger the gun).
WARNING
Serious injury or death may occur from contact with electricity.
• Do not direct spray on or into electrical installations of any kind! This includes electrical outlets, light
bulbs, fuse boxes, transformers, and the unit itself.
• Do not allow metal components of the pressure washer to come in contact with live electrical
components.

6
WARNING
Serious injury may occur from touching the gasoline engine, mufer, or heat exchanger.
These areas can remain hot for some time after the pressure washer is shutdown.
• Never allow any part of your body to contact the gasoline engine, mufer, or heat exchanger.
WARNING
Serious injury may occur to the operator from moving parts on the pressure washer.
• Before making any adjustments, be certain the engine is turned off and the ignition cable(s) is removed
from the spark plug(s). Turning the machinery over by hand during adjustment or cleaning might start
the engine and machinery with it.
• Do not operate the unit without all protective covers in place.
WARNING
Serious injury may occur from a pressure washer malfunction or exploding accessories if
incorrect system components, attachments, or accessories are used.
Serious injury or death may occur if attempting to start the pressure washer when the
pumping system is frozen.
• Never make adjustments to the factory set pressures.
• Never exceed manufacturers maximum allowable pressure rating of attachments.
• Do not allow any hoses to make contact with heat exchanger to prevent the possibility of bursting. Avoid
dragging the hoses over abrasive surfaces such as cement.
• Use only manufacturer recommended repair parts for your pressure washer.
• In freezing temperatures, the unit must always be warm enough to ensure there is no ice formation
in the pump. Do not start the pressure washer if it has been transported in an open or under heated
vehicle without rst allowing the pump to thaw.
WARNING
Serious injury or death may occur from detergents contacting the skin.
Serious injury can occur from loose debris being propelled at a high speed from the spray
gun.
Injury may occur if the operator loses their balance caused by the thrust of water traveling
through the spray nozzle.
• Never use any solvents or highly corrosive detergents or acid type cleaners with this pressure washer.
• Protective equipment such as rubber gloves and respirators are advisable, especially when using
cleaning detergents.
• Keep all detergents out of the reach of children!
• Always wear protective goggles when operating the unit to shield the eyes from ying debris and
detergents.
• Do not direct spray toward fragile materials such as glass.
• Stay alert: watch what you are doing. Do not operate the unit when fatigued or under the inuence of
alcohol or drugs.
• Never squeeze the trigger unless securely braced.
• Do not overreach or stand on unstable support.
• Wet surfaces can be slippery. Wear protective foot gear and keep good footing/balance at all times.
• Never pull the trigger of the gun while on a ladder, roof, or other unstable surface.
• Always hold on rmly to the gun/lance assembly when starting and operating the unit. Failure to do so
can cause the lance to fall and whip dangerously.
• Do not leave pressurized unit unattended. Shut off the pressure washer and release trapped pressure
before leaving.
• Do not operate the unit if you see any fuel, oil, or water leaking from the machine. DO NOT resume
operation until the unit has been inspected and repaired by a qualied technician.
• Do not transport the unit by pulling on hoses or cords.
IMPORTANT SAFETY WARNINGS

7
GENERAL INFORMATION
Description PHG-40
Series Commercial
Pressure Rating 4,000
GPM 4
Engine Model Honda GX390
Displacement 389cc
Drive Direct
Burner Fuel Consumption 2.21 GPH
BTU / HR 330,000
Burner Type ADC
Unloader External
Pump Type General EZ4040
Nozzle Included 5
Hose length 50'
Start Type Electric Start
Fuel Capacity 10 Gal
Weight 530 lbs
Hose diameter 3/8"
Hose Material Rubber / Double Wire Braid
PRODUCT FEATURES & COMPONENTS
12v DC Oil-red
Beckett burner
with low voltage inhibitor,
prevents burner from starting
up if battery voltage is dropped
HEATING COIL
½" Heavy-duty schedule 80
American made Carbon
Steel Cold-rolled pipe,
no weak points from
heating to make bends
5500PSI Rated,
"Full Sized" 96' length for
maximum heat rise and
proper heat production
Stainless-steel coil
skin provides extra
durability and
resists corrosion
13" heavy-duty
at free tires
Mounting bracket
for truck mounting
Heavy-duty roll-cage powder
coated 1.5" OD steel tube
frame, with centre balanced
lift hook (above industry standards)
American made
heavy duty 7000 PSI
rupture disk
Adjustable thermostat
up to 200°F with LED rocker
switch and hour/tach meter
3/4" HD Threaded
mount axle
Marine sealed battery
box with 55 AH AGM deep
cycle battery
Brake assembly
12" oil drain hose for
ease of maintenance
Adjustable pressure
relief valve
Triplex direct-drive
general pump carries
a5-year warranty
Honda GX390 electric
start w/ 18amp charge
10-Gallon, removable,
rust-proof
polyethylene
fuel tank with fuel
gauge in cap

8
SET-UP
WATER SUPPLY
1. Select a water supply hose which is a quality grade of the hose measuring at least 3/4" ID and no longer
than 50 feet to the water tank.
2. Connect the hose to the inlet of your high pressure pump. Thread the connection together by hand until
tight. Ensure the connection is tight at both ends (at the pump inlet and at the water supply source).
3. Install water inlet lter to tank.
4. Never allow the unit to operate without the water hose attached and the water supply opened all
the way.
NOTICE
• If there is a high mineral content in your water, it is highly recommended that a water softener and an
additional water strainer be added to the water inlet. This will help prevent the possibility of excessive
scale buildup inside the heat exchanger coil.
Pumps are water cooled. When the machine is running, ensure the trigger of the gun is pressed to allow
a constant ow of fresh water into and out of the pump. Do not let the machine run for more than 30
seconds without pulling the trigger.
Most pumps are protected by a thermal valve. The thermal valve releases water if a pump starts to run
too hot. It will prevent catastrophic heat failure. However, the pump may have suffered damage and need
maintenance, repair, or replacement. If it does not reset and continues to leak water, the thermal valve may
need to be replaced.
UNLESS OTHERWISE SPECIFIED:
CHECKED
SIZE
APPLICATION
TITLE:
PROPRIETARY AND CONFIDENTIAL
INTERPRET GEOMETRIC
TOLERANCING PER:
Q.A.
FINISH
DWG. NO.
DATE
USED ON
A
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL
ANGULAR: MACH BEND
TWO PLACE DECIMAL
THREE PLACE DECIMAL
NEXT ASSY
MATERIAL
NAME
REV
DO NOT SCALE DRAWING
SCALE: 1:2
TSF2021
ENG APPR.
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
<INSERT COMPANY NAME HERE>. ANY
REPRODUCTION IN PART OR AS A WHOLE
WITHOUT THE WRITTEN PERMISSION OF
<INSERT COMPANY NAME HERE> IS
PROHIBITED.
COMMENTS:
DRAWN
MFG APPR.
SHEET 1 OF 1
2 1
A
B
A
B
12
<COMPANY NAME>

9
SET-UP
HOW TO USE SPRAY TIPS
The quick–connect on the nozzle extension allows you to switch between ve different quick-connect spray
tips. Spray tips can be changed while the pressure washer is running once the spray gun trigger safety lock
is engaged. The spray tips vary the spray pattern as shown above.
FOLLOW THESE INSTRUCTIONS TO CHANGE SPRAY TIPS:
1. Pull back collar on quick–connect coupler and pull the current spray tip off. Store the spray tips in the
holder provided on the handle. Storing nozzles in the designated holder will help prevent any debris from
clogging the tip.
2. Select the desired spray tip:
• For a gentle rinse, select the white 40° spray tip.
• For light cleaning, select the green 25° spray tip.
• For high pressure cleaning, select the yellow 15° spray tip.
• To scour the surface, select the red 0° spray tip.
• To apply detergent, select the black spray tip. No other spray tip will draw soap
3. Pull back on collar, insert spray tip and release collar. Tug on spray tip to ensure it is securely in place.
USAGE TIPS
• For most effective cleaning, keep spray tip 8 to 24 inches away from cleaning surface.
• If the spray tip gets too close to the surface being cleaned, especially using a high pressure spray tip (red
or yellow), it may be damaged. Do not use the red spray tip on glass. Doing so could result in broken
or cracked glass.
0o
RED 40o WHITE Soaper BLACK
15o
YELLOW 25o GREEN

10
PRE-OPERATION SAFETY
1. This unit should only be placed on a level surface to ensure proper lubrication for the water pump while
operating. Placing the unit on a level surface will also ensure that fuel, oil, and other uids don't spill
during operation. NEVER spray water directly on the unit.
2. Do not use unit in an area:
A. with insufcient ventilation.
B. where there is evidence of oil or fuel leaks.
C. where ammable gas vapors may be present.
This unit has multiple ignition sources that could cause a re or explosion.
3. If using a wheel kit, be certain to block the wheels to prevent the unit from moving while operating.
4. Do not allow the unit to be exposed to rain, snow, or freezing temperatures. If any part of the unit
becomes frozen, excessive pressure may build up in the unit which could cause it to burst. This would
result in possible serious injury to the operator or bystanders.
5. Pump oil level should be checked before each use. Make certain the oil is on the "Full" mark on the
dipstick or in the center of the oil sight glass. If the level appears to be low, ll with SAE30W non-
detergent pump oil.
6. Your pressure washer is equipped with an electric starter. On initial start-up, wear proper eye and skin
protection when lling the battery with acid. Fully charge the battery to allow electric starter to function.
MANUAL & SAFETY REVIEW
1. Review "Risk of Explosion or Fire" warnings, before fueling.
2. Locate the Safety Decals on your unit and heed their warnings.
3. Engines: See the included engine Owner's Manual for fuel requirements.
4. Burner Fuel: When lling tank, use No. 1 or No 2 fuel oil/diesel or kerosene.
5. Check the engine oil level before starting the engine.
6. Review the engine manual accompanying this pressure washer for correct engine start-up and
maintenance procedures.
START-UP PROCEDURE PREPARATION
Before starting the unit, perform the following procedures:
1. Check the oil level and condition for the pump and engine. We recommend SAE 10W30 oil for engines
and SAE 30 mineral oil for pumps.
2. Inspect the water inlet strainer. Clean or replace if necessary.
3. Check all hose connections to ensure they are securely tightened.
4. Inspect for system water leaks, oil leaks and fuel leaks. If a fuel leak is found, do not start the unit. See
"Risk of Explosion or Fire", (Pg. 5). Be sure that all damaged parts are replaced and mechanical problems
are corrected prior to operation of the unit.
5. Inspect high pressure hoses for kinking, cuts, and leaks. If a cut or leak is found, do not use the hose.
Replace hose before starting unit. See "Risk of Injection" pg. 5. Be sure that all damaged parts are
replaced and that the mechanical problems are corrected prior to operation of the unit.
OPERATION

11
START-UP (COLD WATER)
To start your pressure washer for the rst time, follow these instructions step-by-step. This starting
information also applies if you have let the pressure washer sit idle for at least a day.
1. Make sure the unit is level and placed on solid ground. Ensure the wheels are locked so that it doesn't
move during operation.
2. Connect garden hose to water inlet on pressure washer pump. To do this, thread the end of the hose into
the inlet by hand until tight and secure.
3. Attach wand extension to spray gun. Tighten by hand.
4. Choose desired spray tip, pull back nozzle extension collar, insert spray tip and release collar. Tug on
spray tip to make sure it is securely in place. See Spray Tips on page 9 for more information.
NOTICE
DO NOT run the pump without the water supply connected and turned on. Failure to follow this rule will
result in damage to the pump. Damage caused by running the pump without water is not covered by
warranty.
5. Pull down on the collar of the quick-connect coupler, slide onto the gun connector and let go of collar.
Pull on hose to ensure the connection is tight.
OPERATION

12
6. Attach the other end of the high pressure hose to high pressure outlet ("A" on diagram below) on pump.
Pull down on collar of quick-connect, slide onto pump and let go of collar. Note that some pumps require
the hose to be threaded on. Tug on the hose to ensure connection is secure.
7. Turn water supply on if you have not already done so. Point the gun in a safe direction and squeeze the
trigger to purge the pump of air and debris. Do this until water ow is owing at a steady rate. Continue
to hold trigger of gun down while starting the machine to ensure there is no pressure build-up.
8. Take a nal look at all connections to make sure there are no leaks or loose connections. If there are any
leaks in hoses, they must be replaced.
IMPORTANT: DO NOT siphon standing water for the water supply.
Make sure burner switch is OFF
9. To start the machine, locate the electric ignition switch on the right side of the engine. Insert the key and
turn it to the "ON" position" until the unit starts. Do not hold the switch to the "ON" position for more than
5 seconds as this can cause damage to the engine. Check to ensure fuel valve is in the ON position
and if starting cold, move the choke lever to the "CLOSED" position. Reference the component diagram
below for the location of these parts.
Regardless of the starting method, remember to gradually move the choke lever back to the "open"
position once the engine is running.
*Pump Uses SAE30
Non-Detergent Mineral Oil
A
*Engine Uses SAE 10W30 Oil
OPERATION
MUFFLER
AIR CLEANER THROTTLE LEVER
OIL ALERT LAMP
ENGINE SWITCH
CIRCUIT BREAKER
RECOIL STARTER
STARTER GRIP
FUEL VALVE
CHOKE LEVER
SPARK PLUG
(QAE TYPE)
(QAE TYPE)

13
Now that the unit is running, it is operating as a cold water pressure washer.
When you wish to switch to hot water, turn the burner switch to the "ON" position.
WARNING
The temperature of the water can become extremely hot during operation.
Use caution when operating the spray gun.
NOTICE
Upon initial start-up, water will begin heating up in approximately 20 seconds. It will reach maximum
temperature within 2-1/2 minutes providing that the trigger is continuously pressed down. The burner will
not re when the trigger is released.
1. Prepare detergent solution according to label directions. Never pump acids, alkaline, abrasive uids or
solvents through the unit. Due to the unknown and often corrosive characteristics of many detergents
commonly used in the pressure washer cleaning industry, it is recommended to use only mild detergents
with this unit.
2. Fully immerse the detergent strainer into the detergent solution.
3. To apply solution, install the black soap nozzle to the tip of the spray gun, unlock the gun, and squeeze
the trigger. After a few moments, a detergent/water mixture will exit the nozzle. Start spraying the lower
portion of the surface being cleaned and move up, using long overlapping strokes. Applying from the
bottom up helps avoid streaking. Allow everything to soak briey.
4. Avoid working on hot surfaces or in direct sunlight to minimize the chances of the detergent drying, which
may result in damaged surfaces. Be certain to rinse a small section at a time.
5. To rinse, lock the trigger gun in the "OFF" position. From here, securely place the white or green spray
tip in the end of the spray gun. Unlock the trigger and spray. It will take about 30 seconds to purge all
detergent from the line. For best rinsing results, start at the top and work down.
6. Siphon a gallon of water through the low pressure detergent injection system after each use. This
prevents the possibility of corrosion or detergent residue causing mechanical problems during the next
use.
APPLYING DETERGENT
HOT WATER OPERATION
NOTICE
This feature is designed for use with mild detergents only. Since the cleaning solution travels through
the heat exchanger coil, DO NOT use corrosives as they will cause extensive damage as well as pose a
considerable safety hazard.
OPERATION
BRASS- STAINLESS STEEL
LOW PRESSURE CHEMICAL
INJECTOR, 4000PSI, 2.5GPM,
3/8"QC, 3/8:" PLUG
DO NOT SCALE DRAWING
85.400.001(R2)
SHEET 1 OF 1
10/04/19
HAMID L
UNLESS OTHERWISE SPECIFIED:
SCALE: 1.5:1
WEIGHT:
REV
DWG. NO.
B
SIZE
TITLE:
NAME
DATE
COMMENTS:
Q.A.
MFG APPR.
ENG APPR.
CHECKED
DRAWN
FINISH
MATERIAL
INTERPRET GEOMETRIC
TOLERANCING PER:
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL
ANGULAR: MACH BEND
TWO PLACE DECIMAL
THREE PLACE DECIMAL
APPLICATION
USED ON
NEXT ASSY
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
<INSERT COMPANY NAME HERE>. ANY
REPRODUCTION IN PART OR AS A WHOLE
WITHOUT THE WRITTEN PERMISSION OF
<INSERT COMPANY NAME HERE> IS
PROHIBITED.
A A
B B
4
4
3
3
2
2
1
1

14
CAUTION
Be certain the hoses and spray gun are not attached to the pump during application of pump saver or use
of the blowout tool. Having a hose attached greatly reduces the amount of water/debris removed from the
pump and coil.
SHUTTING THE UNIT DOWN
1. Move the burner switch to the "OFF" position.
2. Squeeze the trigger and discharge the water for three minutes to cool the heat exchanger and high
pressure hose. Insufcient cool-down periods for the high pressure hose will cause excessive wear and
eventual rupture of the hose.
3. Do not close the choke to stop the engine. Backre or engine damage may occur.
4. Move the engine key switch to the OFF position.
5. Turn off the water supply and pull the trigger of the gun to relieve trapped pressure.
Disconnect and drain the high pressure hose, gun, and lance. Wipe the unit clean and store in a non-
freezing environment.
STORAGE & WINTERIZING
If you do not plan to use the pressure washer for more than 30 days, you must prepare the engine and
pump for long term storage. See the engine user manual for specic instructions regarding this.
When storing the unit for winter, it is important to ensure it is stored in the right environment. Ensure the
storage area stays above freezing during cold weather, and try to limit the amount of dust gathered on the
unit via a cover.
You will need to ensure that the fuel is drained from the engine prior to storage. For the steps required to do
this, see the engine user manual.
Once the unit has been stored and the gasoline has been drained, the last thing to do is to winterize your
pump. This can be done in one of two ways:
• "Pump Saver" Solution (P/N: 85.490.046). This is an anti-freeze solution that is used before storing the
unit. It coats to inside of the pump to ensure that any residual water doesn't freeze. To use the Pump
Saver, follow the instructions written on the bottle. Water freezing in the pump will damage seals and
other internal parts. Freezing damage is not covered by warranty.
• "Pump & Coil Blowout Tool" (P/N: 59.400.000). This tool utilizes compressed air to forcefully remove
any water left in the pump. One end of the tool attaches to an air compressor, while the other attaches to
the inlet of your water pump via an adapter. Follow the instructions on the back of the packaging to use
the Pump and Coil Blowout Tool.
OPERATION
NOTICE
You must protect your unit from freezing temperatures.
1. Failure to do so will permanently damage your pump and render your unit inoperable.
2. Freezing damage is not covered under warranty.
WARNING
Storage covers can be ammable.
• DO NOT place a storage cover over a hot pressure washer.
• Let equipment cool for at least 30 minutes before placing the cover on the equipment.

15
SPECIFIC MAINTENANCE
ENGINE: The engine instructions that accompany your unit detail specic procedures for maintenance of
the engine. Following the engine manufacturer's recommendations will extend the engine's life and ensure
the best possible performance.
PUMP: Change the pump oil after the rst 50 hours of operation. After the initial change, every 3 months
or 250 hour intervals are recommended. If oil appears dirty or milky, changes may be required in greater
frequency. Use SAE 30 non-detergent pump oil and ll only to the center of the oil sight glass. DO NOT
overll.
NOZZLE: Water ow through the spray nozzle will erode the orice over time, making it larger. This will
result in a reduction of pressure. Nozzles should be replaced whenever pressure is less than 85% of the
maximum. The frequency of replacement will depend upon such variables as mineral content in the water
and number of hours the nozzle is used. Every 3-6 months tends to be a standard interval for replacement.
PRESSURE WASHER PUMP & COIL SAVER TOOL
This tool utilizes compressed air to clear any remaining water from the pump and hot water coil in your
pressure washer. To use the Pump & Coil Saver Tool, ensure your air compressor’s regulator is set to a max
pressure of 60 PSI. Leave your hose and gun connected to your pressure washer, but remove the nozzle
from the end of the wand. For hot water pressure washers, it is recommended that all water be removed
from the pump and coil after every use. This will prolong their life and prevent possible freezing damage in
cold weather. Follow the steps below to use the Pump and Coil
Saver Tool:
1. Thread the blow out tool into the inlet of the pump
2. Ensure air compressor regulator is set to 60 PSI or less
3. Connect air line from air compressor to blow out tool
4. Hold trigger of pressure washer gun open
5. (If applicable) squeeze bypass hose several times to help remove water from the
unloader bypass system
6. Once there is no more water coming out of the tip of the gun, disconnect the
airline from the blow out tool, squeeze trigger of the pressure washer gun to relieve
any remaining air pressure
MAINTENANCE
Sight
Glass
PUMP INLET

16
MAINTENANCE
MAINTENANCE SCHEDULE
*Must be performed by an authorized service technician.
** The pump oil must be changed after the rst 50 hours of operation and then every 250 hours or 3
months, whichever comes rst.
*** High pressure nozzle should be replaced whenever pressure drops to less than 85%.
**** Scale build-up will vary with mineral content in the water and amount of usage. Descaling can range
from weekly to yearly maintenance.
***** The engine oil must be changed after the rst 8 hours of operation and then every 50 hours or 3
months, whichever comes rst.
PROCEDURE DAILY 3 MONTHS 6 MONTHS 9 MONTHS 12 MONTHS
Check engine oil level X
Change engine oil ***** X X X X
Check water pump oil level X
Change water pump oil ** X X X X
Oil leak inspection X
Fuel leak inspection X
Water leak inspection X
Hose inspection X
Water inlet screen inspection X
Check fuel lter X X X X
Replace fuel lter X
Inspect belts X X X X
Replace high pressure nozzle *** X X X X
Inspect fuel pump lter *X
Replace fuel nozzle *X
Check burner air adjustment X X X X
Check burner electrodes *X
Test water pressure *X X X X
Test fuel pressure *X X X X
Test water temperature *X X X X
Descale coil **** X

17
UNIT BREAKDOWN
3
4
5
7
8
2
6
9
10
19
15
14
13
22 18
1
16
20
23
11
17
12
HOUR METER
THERMOSTAT BURNER
ON
OFF
TACH / HOUR
OFF
21
Image breakdown: HW4013HG

18
PARTS REFERENCE LIST
ITEM PART NUMBER DESCRIPTION QT Y.
1 85.518.130 Engine, Honda GX390 389cc 1
2 59.000.000 Hot Water Coil Assy, 4 GPM 1
3 85.205.064 5000 PSI Gun & Wand Assy 1
4 85.601.043 10 Gallon Fuel Tank 1
5 85.603.000 Battery 1
6 59.400.001 Hose Reel Bracket 1
759.000.001 Burner Assy With Fuel Pump (Beckett, ADC-12V) 1
8 85.130.021B Triplex High Pressure Pump (EZ4040G) 1
9 85.238.251 50' High Pressure Hot Water Hose 1
10 85.210.040BEP Nozzle Set #4.0 1
11 42.005.053 Battery Box 1
12 85.604.104 Brake Assembly 1
13 59.000.119 Cross 1/2" 1
14 85.300.088 Expansion Valve 1
15 85.400.001 Low Pressure Chemical Injector, 4000 PSI 1
16 85.300.082 Pressure Switch, 1/4" MNPT 1
17 85.660.050F Wheel, 13" Flat Free 4
18 85.300.108S Quick-Connect Coupler, 3/8" MNPT 1
19 59.000.109 90° Elbow, Street Steel 2
20 AL607 Unloader, VRT3 4500 PSI 1
21 85.400.071 Thermostat (Temp Control) 1
22
59.000.116 Insulation, Bottom 1
59.000.117 Insulation, Top 1
59.000.104 Fuel Filter 1
23 59.000.123 Fuel Cap 1

19
BURNER BREAKDOWN
ITEM #. PART #. DESCRIPTION
159.110.004 BLOWER MOTOR
259.110.005 SHAFT COUPLING
3 59.110.000 FUEL PUMP
4, 5, 6 59.110.001 FUEL SOLENOID
7 59.110.002 ELECTRODE ASSEMBLY
8 59.110.003 IGNITER
24 59.000.002 FUEL NOZZLE
ADC BECKETT
59.000.001
22
23
24
22
23

20
PUMP BREAKDOWN (EZ4040)
REPAIR KITS
PARTS
PARTS LIST
REPAIR KITS
ITEM PART NO. DESCRIPTION KIT NO. QTY.
1. 44120641 Manifold 1
2. 99317500 Screw 8
3. 96701400 Washer 8
4. 90384100 O-ring 123 6
5. 36200366 Valve Seat 123 6
6. 36200176 Valve 123 6
7. 94737600 Spring 123 6
8. 36202551 Valve Cage 123 6
9. 90384700 O-ring 124 6
10. 98222600 Cap Screw 124 6
11. 36711501 Valve Assembly 123 6
12. 99180700 Screw 4
13. 50150074 Bearing Cover 1
14. 44211801 Spacer 1
15. 90409700 O-ring 1
16. 91832800 Ball Bearing 1
17. 90161400 Oil Seal 23 3
18. 44010022 Crankcase 1
19. 98210300 Oil Dip Stick 1
22. 44050166 Piston Guide 3
ITEM PART NO. DESCRIPTION KIT NO. QTY.
23. 44030022 Connecting Rod 3
24. 90392000 O-ring 1
25. 44160022 Rear Cover 1
26. 99183700 Screw 5
27. 90358500 O-ring 1
28. 98204100 Cap Screw 1
29. 97734000 Pinr 3
30. 96696700 Washer 3
33. 44040266 Plunger, 13 mm 3
37. 50200074 Rail 2
38. 96701600 Washer 4
39. 99303700 Nut 4
40. 90361200 O-ring 156 3
41. 44080370 Packing Retainer 156 3
42. 44216270 Intermediate Ring 156 3
43. 90507600 Packing 153,156 3
44. 90260200 Packing 153,156 3
45. 44100251 Head Ring 156 3
46. 98210000 Cap Screw 1
47. 98217600 Cap Screw 1
ITEM PART NO. DESCRIPTION KIT NO. QTY.
48. 96738000 Washer 1
49. 96751400 Washer 1
50. 98196600 Cap Screw 1
51. 90260300 Seal, Low Pressure
153,156 1
75. 90063500 Retaining Ring 1
76. 44022165 Crankshaft (EZ4040G) 1
44021265 Crankshaft (EZ4035G34) 1
44020965 Crankshaft (EZ4030G34) 1
77. 91856800 Roller Bearing 1
78. 90409700 O-ring 1
79. 99275500 Screw, 5/16 x 1 4
99334500 Screw, 3/8 x 1 4
80. 96702000 Washer, 8 mm 4
96710400 Washer, 10 mm 4
81. 10051822 Gas Flange 1
82. 90169000 Oil Seal 1
83. 96693800 Washer 4
84. 99191200 Screw 4
EZ Series 44 - Triplex GENERAL PUMPA member of the Interpump Group
KIT NO. K23 K123 K124 K153 K156
ITEM NO’s
INCLUDED IN
KIT
17
4, 5, 6,
7, 8,
(11)
9, 10 43, 44,
51
40, 41, 42,
43, 44, 45
51
NUMBER OF
ASSEMBLIES
IN KIT
36631
NUMBER OF
CYLINDERS
KIT WILL
SERVICE
33331
Pos. Ft/lb N-M
2 14.7 20
10 95.9 130
12 7.3 10
26 7.3 10
28 14.7 20
46 29.4 40
47 29.4 40
50 9.6 13
79 14.7 20
84 7.3 10
* Decrease torque by 20%
if threads are lubricated
TORQUE SPECS*
PARTS LIST
REPAIR KITS
ITEM PART NO. DESCRIPTION KIT NO. QTY.
1. 44120641 Manifold 1
2. 99317500 Screw 8
3. 96701400 Washer 8
4. 90384100 O-ring 123 6
5. 36200366 Valve Seat 123 6
6. 36200176 Valve 123 6
7. 94737600 Spring 123 6
8. 36202551 Valve Cage 123 6
9. 90384700 O-ring 124 6
10. 98222600 Cap Screw 124 6
11. 36711501 Valve Assembly 123 6
12. 99180700 Screw 4
13. 50150074 Bearing Cover 1
14. 44211801 Spacer 1
15. 90409700 O-ring 1
16. 91832800 Ball Bearing 1
17. 90161400 Oil Seal 23 3
18. 44010022 Crankcase 1
19. 98210300 Oil Dip Stick 1
22. 44050166 Piston Guide 3
ITEM PART NO. DESCRIPTION KIT NO. QTY.
23. 44030022 Connecting Rod 3
24. 90392000 O-ring 1
25. 44160022 Rear Cover 1
26. 99183700 Screw 5
27. 90358500 O-ring 1
28. 98204100 Cap Screw 1
29. 97734000 Pinr 3
30. 96696700 Washer 3
33. 44040266 Plunger, 13 mm 3
37. 50200074 Rail 2
38. 96701600 Washer 4
39. 99303700 Nut 4
40. 90361200 O-ring 156 3
41. 44080370 Packing Retainer 156 3
42. 44216270 Intermediate Ring 156 3
43. 90507600 Packing 153,156 3
44. 90260200 Packing 153,156 3
45. 44100251 Head Ring 156 3
46. 98210000 Cap Screw 1
47. 98217600 Cap Screw 1
ITEM PART NO. DESCRIPTION KIT NO. QTY.
48. 96738000 Washer 1
49. 96751400 Washer 1
50. 98196600 Cap Screw 1
51. 90260300 Seal, Low Pressure 153,156 1
75. 90063500 Retaining Ring 1
76. 44022165 Crankshaft (EZ4040G) 1
44021265 Crankshaft (EZ4035G34) 1
44020965 Crankshaft (EZ4030G34) 1
77. 91856800 Roller Bearing 1
78. 90409700 O-ring 1
79. 99275500 Screw, 5/16 x 1 4
99334500 Screw, 3/8 x 1 4
80. 96702000 Washer, 8 mm 4
96710400 Washer, 10 mm 4
81. 10051822 Gas Flange 1
82. 90169000 Oil Seal 1
83. 96693800 Washer 4
84. 99191200 Screw 4
EZ Series 44 - Triplex GENERAL PUMPA member of the Interpump Group
KIT NO. K23 K123 K124 K153 K156
ITEM NO’s
INCLUDED IN
KIT
17
4, 5, 6,
7, 8,
(11)
9, 10 43, 44,
51
40, 41, 42,
43, 44, 45
51
NUMBER OF
ASSEMBLIES
IN KIT
36631
NUMBER OF
CYLINDERS
KIT WILL
SERVICE
33331
Pos. Ft/lb N-M
2 14.7 20
10 95.9 130
12 7.3 10
26 7.3 10
28 14.7 20
46 29.4 40
47 29.4 40
50 9.6 13
79 14.7 20
84 7.3 10
* Decrease torque by 20%
if threads are lubricated
TORQUE SPECS*
KIT #. RKI023 KIT123 RKI124 RKI153 RKI156
ITEM #
INCLUDED IN KIT 17 4, 5, 6, 7, 8, (11) 9, 10 43, 44, 51 40, 41, 42, 43, 44, 45, 51
NUMBER OF
ASSEMBLIES IN KIT 3 6 6 3 1
NUMBER OF CYLINDERS
KIT WILL SERVICE 3 3 3 3 1