MHOTPWR
ITEM NUMBER: 157321,322,325,326
SERIAL NUMBER:
HP:______ Volts:______ Amp:______ Ph:_____
RPM:____ PSI:____ GPM:____ Nozzle Size:_____
Pump:___________ Hose:______ Lance:_______
Max. Discharge Temperature:_____________
Proven Performance
K - B A R I n d u s t r i e s , F a r i b a u l t , M N , 5 5 0 2 1
Installation, Operation, and Maintenance Manual
HOT WATER PRESSURE WASHER: Cleans dirty surfaces with high
pressure hot water.
To the Owner:
Thank you for purchasing a Northstar hot water pressure washer. Your machine is designed for long life,
dependability, and the top performance you demand! Take time now to read through this manual so you better
understand the machine’s operation, maintenance and safety precautions. Everyone who operates this machine
must read and understand this manual. The time you take now will prolong your machine’s life and prepare you
for its safe operation. Enjoy the exceptional performance of your Northstar hot water pressure washer, the
industry leader! The manufacturer reserves the right to make improvements in design and/or changes in
specifications at any time without incurring any obligation to install them on units previously sold.
Quick Facts
Pump Oil
Water
Pump is shipped with oil. Change oil plug and check pump oil level before starting.
Use SAE 30 Non-detergent pump oil (item# 4043) or Cat Pump oil (item# 22158) for oil
changes.
Make sure your water flow is 20% higher than the pressure washer’s flow rate.
Make sure your water is clean and particle free.
Storage
Spraying
Chemicals
Do not allow water to freeze in the pump, hose, coil, or spray gun.
Use any North Star brand or equivalent pressure washer chemicals.
Adjust soap adjustment knob to regulate cleaning power.
Maintenance Pump:
Schedule
Oil: change after first 50 hours, then every 3 months or 500 hours.
Read and understand all manuals before operating.
Any Questions, Comments, Problems or Parts Orders
In the United States
In the United Kingdom
Call 02392639752
Northstar Customer Service
Call 1-800-270-0810
Northern Tool and Equipment Co. (UK) Ltd.
Unit 2, Keel Close,
Hours: Monday - Friday 7:00 AM to 5:30 PM
Saturday 7:30 AM-11:30 AM Central Time
Portsmouth, Hants PO3 5QD, England
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Grounding Instructions
This product must be grounded. If it should malfunction or breakdown, grounding provides a path of least resistance for
electric current to reduce the risk of electrical shock. This product is equipped with a cord having an equipment-grounding
conductor and a grounding plug. The plug must be plugged into an appropriate outlet that is properly installed and
grounded in accordance with all local codes and ordinances.
DANGER - Improper connection of the equipment - grounding conductor can result in a risk of electrocution. Check with a
qualified electrician or service personnel if you are in doubt as to whether the outlet is properly grounded. Do not modify
the plug provided with the product - if it will not fit the outlet, have a proper outlet installed by a qualified electrician. Do not
use any type adapter with this product.
1. For a product rated 125 volts or less:
GROUND FAULT CIRCUIT INTERRUPTER PROTECTION
This pressure washer is provided with a ground fault circuit interrupter (GFCI) built into the plug of the power supply cord.
This device provides additional protection from the risk of electric shock. Should replacement of the plug or cord become
necessary, use only identical replacement parts that include GFCI protection.
2. For a product rated more than 125 volts:
GROUND FAULT CIRCUIT INTERRUPTER PROTECTION
To comply with the National Electric Code (NFPA 70) and to provide additional protection from the risk of electric shock,
this pressure washer should only be connected to a receptacle that is protected by a ground fault circuit interrupter
(GFCI).
Extension Cords
Use only 3-wire extension cords that have 3 prong grounding-type plugs and 3-pole cord connectors that accept the plug
from the product. Use only extension cords that are intended for outdoor use. These extension cords are identified by a
marking “Acceptable for use with outdoor appliances; store indoors while not in use.” Use only extension cords having an
electrical rating not less than the rating of the product. Do not abuse extension cord and do not yank on any cord to
disconnect. Keep cord away from heat and sharp edges. Always disconnect the extension cord from the receptacle before
disconnecting the product from the extension cord.
Warning - To reduce the risk of electrocution, keep all connections dry and off the ground. do not touch plug with wet
hands.
SAVE THESE INSTRUCTIONS
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Specifications
Item Number
157321
1000 psi
157322
1000 psi
157325
2000 psi
157326
2000 psi
Pressure Rating
Flow Output
Pump Type
2 gpm
Ceramic Triplex
Plunger
2 gpm
Ceramic Triplex
Plunger
3.5 gpm
Ceramic Triplex
Plunger
3.5 gpm
Ceramic Triplex
Plunger
Water Supply
Standard tap water
@ 20-100psi
1.5 hp
Standard tap water
@ 20-100psi
1.5 hp
221,400 BTU
140°F - (190°F steam
mode)
Standard tap water
@ 20-100psi
5 hp
Standard tap water @
20-100psi
Motor Horsepower
BTU Output
Temperature Rise
5 hp
221,400 BTU
140 F
270,000 BTU
140°F
270,000 BTU
140°F - (190°F steam
mode)
Maximum
Temperature
210°F
250°F
210°F
250°F
Approved Fuels
#1 or 2 Diesel,
Kerosene, Fuel Oil
8.25 gal.
#1 or 2 Diesel,
Kerosene, Fuel Oil
8.25 gal.
#1 or 2 Diesel,
Kerosene, Fuel Oil
8.25 gal.
#1 or 2 Diesel,
Kerosene, Fuel Oil
8.25 gal.
Fuel Capacity
Discharge Hose
3/8” x 30’
3/8” x 50’
3/8” x 30’
3/8” x 50’
Power
Requirements
NEMA
5-20R
5-20R
6-30R
6-30R
Receptacles
Volts
Amps
115V
20A
115V
20A
230V
30A
230V
30A
Hertz
Phase
60Hz
single
60Hz
single
60Hz
single
60Hz
single
Dimensions
Length
Width
38”
26”
38”
26”
38”
26”
38”
26”
Height
43”
43”
43”
43”
Ship Weight
355 lb.
360 lb.
420 lb.
415 lb.
4
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Machine Component Identification
157321, 157322, 157325, 157326
Description
Exhaust Vent
High Pressure Water Outlet
Nozzle Holders
Pump
Burner
Fuel Fill Cap
Fuel Tank
Ref # Description
Ref # Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Control Box
Fuel Filter
Main Power Switch
Service Panel
Thermostat (optional)
Heat Switch
Safety Relief Valve
Power Cord Hanger
Wand Holder
19
20
21
22
23
Heating Coil
Garden Hose Water Inlet
Spray Gun
Grip
Dual Lance Wand
Unloader
Motor
5
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Installation Instructions
I.) Unpack
Separate and identify all components. Use the assembly instructions in this manual for assembly.
Hex Wrench
Qty-1
Spray Gun & Grip
Qty-1
High Pressure Hose
Qty-1
Fastener Bag
Qty-1
Wheel Retainer
Qty-2
Wheel
Qty-2
Pressure Washer
Qty-1
Nozzle
157321, 157325 Qty-4
157322, 157326 Qty-5
00786
6
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II.) Assembly Instructions
Axle
A. 1. Carefully raise the pressure washer off the floor by
using blocks or ramps. Make sure the pressure
washer is secure before proceeding.
2. Install the two wheels as shown with grease zerk
away from frame.
3. Slide the two wheel retainers onto the end of the
axle. Tighten the set screw with the hex wrench
provided in the parts bag .
Description
Wheel
Wheel Retainer
Qty.
2
2
Wheel Retainer
Wheel
B. 1. Install the pressure hose onto the pressure washer
as shown.
2. Connect the other end of the pressure hose to the
spray gun as shown.
3. Make sure all plumbing connections are tight.
Description
Spray Gun/ Lance
Spray Hose
Qty.
1
1
00787
7
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III.) Pump Preparation
Quantities Of Fluid
Type of Fluid
SAE 30*
*AR Pumps Only
Pump
QTY
A.) Remove the shipping plug from the oil fill hole.
B.) Screw the vented dipstick into oil fill hole.
C.) Check oil level in the pump. Make sure it is 1/2 way
up the sight glass .
AR XTV
AR XMV
Cat 2SFX
8.0oz (0.24L)
14.0oz (0.41L)
11.83oz (0.35L)
SAE 30*
SAE 30**
*SAE Non-Detergent Oil (order Pump Oil Item# 4043)
**SAE Non-Detergent (order Cat Pump Oil Item# 22158)
AR PUMPS
IV.) Chemical Injector Preparation
A.) Push clear hose onto chemical strainer.
B.) Push other end of clear hose onto chemical injector
Oil Fill Hole
Sight Glass
**Cat Pumps Only
A.)Remove shipping tape from oil fill cap
B.)Make sure the oil is 1/2 way up oil sight glass.
CAT
PUMPS
Oil Fill
Hole
Sight
Glass
8
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at a proper height and location to provide adequate draft.
This oil fired unit must have a draft controller installed in
the flue. A draft controller will permit proper upward air
flow of exhaust flue gases.
V.) Getting Started
IMPORTANT: Proper initial installation of equipment
will assure more satisfactory performance, longer
service life, and lower maintenance cost.
IMPORTANT: The use of a back flow preventer (Part
#222815 call 1-800-270-0810 to order) on the water
supply hose is recommended and may be required
by local code.
VI.) Oil Burner
Burner Air Adjustment: The oil burner is preset and
performance tested at the factory (elevation 1100 feet).
A one-time initial correction of the burner for your
location will pay off in economy, performance, and
extended service life.
Make sure the pressure washer is on a level surface and
in a protected area where it is not readily influenced by
outside forces such as strong winds, freezing
temperatures, rain, etc. Locate the pressure washer for
easy access for filling fluids, adjustments, and
maintenance.
Air Band
It is recommended that a partition be made between the
wash area and the pressure washer to prevent direct
nozzle spray from coming in contact with the pressure
washer. Moisture reaching the equipment will reduce
the pressure washer’s service life.
White
Arrow
Partition
Locking
Burner
Screw
1.) Turn the pump and heat switches on (Refer to
“Operation” for details). Have someone operate the
spray gun so the burner fires.
2.) Loosen the locking screw and close the air band until
black smoke appears from the burner exhaust vent.
Note the position of the white arrow on the air band.
3.) Slowly open the air band until white smoke just starts
to appear.
4.) Turn the air band half way back to the black smoke
V.) Venting
position previously noted.
screw.
Tighten the locking
DANGER: Do not run machine indoors or in an
enclosed area without adequate ventilation, or in
areas where flammable vapors, (gasoline, solvents,
etc.) may be present. Do not vent exhaust gases into
a wall, a ceiling, or a concealed space.
5.) Fine tune the burner air by loosening the shutter lock
screw and turning the shutter until the exhaust is
cleanest. Tighten the shutter lock screw.
CAUTION: All venting must be in accordance with
applicable federal and state laws, and local
ordinances. Consult local heating contractors.
Shutter
If the pressure washer is to be used in an enclosed area,
a flue must be installed to vent burner exhaust to the
outside atmosphere. Be sure the flue is the same size
as the burner exhaust vent on the pressure washer lid.
Poor draft will cause the pressure washer to soot and
not operate properly. When selecting the location for
installation, beware of poorly ventilated locations or
areas where exhaust fans may cause an insufficient
supply of oxygen. Proper combustion can only be
obtained when there is a sufficient supply of oxygen
available for the amount of fuel being burned. If it is
necessary to install a unit in a poorly ventilated area,
outside fresh air may have to be piped to the burner and
a fan installed to bring sufficient air into the unit. Locate
the pressure washer in such a manner that the flue will
be as straight as possible and protrude through the roof
Shutter
CAUTION: If white smoke appears from the burner
exhaust vent during start-up or operation,
discontinue use and readjust air bands.
NOTE: If a flue is installed, have a professional
serviceman adjust your burner for a #1 or #2 smoke
spot on the Bacharach scale.
9
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Operating Instructions
Follow these instructions every time you use the pressure washer.
I.) Pre-Operation
III.) Before Starting
; A.) Position the machine for easy access to all
controls.
WARNING: Make sure all switches and controls are
in the OFF position prior to plugging in the cord. DO
NOT stand in water while plugging or unplugging
electrical cord.
; B.) Position the machine on a solid surface, with
less than a three degree slope, and so it is
protected from external damage.
; C.) Position the machine so that ambient lighting is
sufficient for the surface you are cleaning to be
seen with ease. Use artificial light if needed.
; D.) Check hoses, fittings, wand, trigger gun and fuel
connections for signs of wear, cracks and
looseness, and replace as required.
; E.) Check and clean the nozzle orifice.
; F.) Check and clean the water inlet screen and
filter.
WARNING: Use
protected by
extension cord of proper voltage and amperage at all
times.
a
UL recognized receptacle
a
ground fault interrupter and
1. Connect electrical cord to specified NEMA receptacle.
See page 4.
WARNING: Check hoses, fittings, wand, trigger gun
and fuel connections daily for signs of wear, cracks
and looseness, and replace as required.
; G.) Read entire manual, especially the important
safety instructions listed on page 2.
; H.) Check and maintain proper oil level in the pump.
2. Connect water supply hose to the garden hose
connector located on the pump.
3. Fill the burner fuel tank. We recommend kerosene
because it burns cleanest. #1 grade home heating
oil, #1 or #2 diesel can also be used. DO NOT USE
GASOLINE OR CRANKCASE OIL.
4. If detergents will be used, only use detergents
intended for pressure washers. Follow instructions
on the detergent container.
II.) Check Your Water Supply
; A.) Make sure the water supply is clean. Debris can
cause excess pump wear and reduce
performance.
; B.) An insufficient water supply will damage your
pump. Make sure the water supply is steady
and is 20% over the rated flow of your pump.
Use a stopwatch to time how long it takes to fill a
5-gallon bucket with your garden hose.
Example: If the rated flow is = 3gpm
IV.) To Start
DANGER: Do not point the spray wand at yourself or
at any person. Bodily injury may result from water
under high pressure.
Then required flow = 3 x 1.20 = 3.6gpm
5gallons / 3.6gpm = 1.39 minutes
1.39min x 60sec/min = 83 seconds
WARNING: Wear eye, ear, hand, foot and skin
protection at all times while operating this pressure
washer.
IMPORTANT: The water must be turned on before
starting. Running the pump dry will cause damage
and void warranty.
Therefore, you must be able to fill a
5 gallon bucket in 83 seconds or faster.
; C.) The water supply garden hose must have an
inside diameter of at least 5/8”. If the hose is
more than 100 ft. long, the diameter must be at
least 3/4”.
; D.) Never use a reservoir tank as a water source.
1. Turn water supply ON.
This pressure washer is designed for
a
2. Squeeze the trigger to allow air to purge from the
system. (this step goes faster with the pressure nozzle
removed)
pressurized water source such as a city water
faucet. Sucking water out of a tank may cause
pump cavitation and damage to your pump.
However, the inlet pressure of the pump must
not exceed 115 psi (8 bar).
; E.) Always use a flexible rubber hose for your water
supply. Do not use rigid piping.
; F.) Do not pump flammable liquids or liquids
containing incompatible chemicals or solvents.
10
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V.) Attach Nozzle
To Clean
WARNING: Wear eye, ear, hand, foot and skin
protection at all times while operating this pressure
washer.
DANGER: Do not point the spray wand at yourself or
at any person. Bodily injury may result from water
under high pressure.
Nozzle
CAUTION: Be careful on painted or delicate
surfaces, the pressure may damage the surface if
the nozzle is too close.
IMPORTANT: Your spray gun is equipped with a
built-in trigger safety latch to guard against
accidental trigger actuation and potentially
dangerous high-pressure spray. Rotate the safety
latch to the locked position when not spraying.
NOTE: Your pressure washer is equipped with a low
pressure chemical injector. You do not need to use
chemicals for every job, however, the proper
chemical used for the proper application can speed
up cleaning jobs tremendously.
Color of Nozzle: Spray Angle
Used For:
Highest Impact
Tough Stains/
Stripping
General
Light Cleaning
Steaming
Red
0
Yellow
15
Green
White
Yellow
25
40
15
WARNING: Only use North Star pressure washer
chemicals or chemicals specifically formulated for
Your pressure washer is equipped with five nozzles. To
install a nozzle simply pull back the collar and push the
nozzle into the coupler. Once the connection is made,
pull on the nozzle to assure a tight connection.
pressure
washers.
Follow
the
chemical
manufacturer’s recommendations. Understand all
safety precautions and first aid for all chemicals.
1. Snap the quick couple chemical injector onto the high
pressure water outlet and high pressure hose and
submerge the suction strainer into the chemical
solution.
Lance
Nozzle
Coupler
Collar
Adjustment Knob
High Pressure Hose
Water Outlet
CORRECT
INCORRECT
WARNING: Make sure the nozzle is correctly
inserted. The nozzle may become a projectile if not
inserted correctly. Do not attempt to use different
types of nozzles that may not fit the coupler.
Diluted
Chemical
Chemical Injector
Strainer
00322
VI.) Turn the pump switch ON.
1. Make sure the hose is not kinked. A kinked hose
will provide insufficient water supply to the pump and
will reduce its life. Make sure the hose remains
unkinked after moving the pressure washer.
2. The amount of chemical applied can be changed by
turning the chemical adjustment knob located on the
chemical injector.
VII.) For Hot Water
1. If HOT water is desired, make sure there is fuel in
the fuel tank, turn the heat switch ON, and adjust the
thermostat to the desired temperature(if applicable).
The burner will fire when the trigger is squeezed.
You may need to initially adjust your burner for peak
performance. See the “Oil Burner” section under
INSTALLATION. When the trigger is released or the
temp setting is reached, the burner will automatically
turn off.
IMPORTANT: Do not run the machine in hot mode
without any fuel in the fuel tank. The fuel pump will
be damaged if it is run dry.
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3. Rotate the grip on the dual lance wand to change to
low pressure and start the detergent flow.
b. Or, turn the black unloader knob counter clockwise.
Grip
Black Unloader
Knob
Safety Latch
4. Spray detergent onto the surface and allow it to soak.
Chemicals need time (dwell time) to work properly.
00788
Follow
the
chemical
manufacturer’s
recommendations for dwell time.
5. Change back to high pressure by rotating the grip until
water comes out the right lance only.
WARNING:
Do not alter the unloader valve’s
maximum pressure. Excess pressures could cause
serious injury and/or pump damage. Any alteration
other than turning the adjustment knob will void
your warranty.
6. Hold the lance with two hands, have a sturdy stance.
7. Point lance at dirty surface and squeeze trigger.
8. Wash from the bottom to the top, using side to side
motions. This washes away heavy dirt and allows the
detergent to soak as you work toward the top.
9. Use the width of the spray pattern to wash in a wide
path. Overlap spray paths for complete coverage.
10.The nozzle should be 12” to 24” from the work, closer
for tough areas.
For Steam (Optional)
1. Set the thermostat to 250°F.
2. Turn the Heat switch ON.
3. Insert the steam nozzle into the nozzle holder.
To Stop
1. If detergents were used, draw clear water through the
detergent inlet line to purge detergent. Failure to do
so may clog the chemical injector.
2. If the burner was used, turn off the “Heat” switch and
pump cold water through the coil for 3 minutes.
Insufficient cool down period of high pressure hose
will cause excessive wear and eventual rupturing of
hose.
Caution: Be careful on painted or delicate surfaces,
the pressure may damage the surface if the nozzle is
too close.
11. Small parts should be washed in a basket so the
pressure does not push them away. Larger, light
weight parts should be clamped down.
12. The pressure washer is set to the maximum rated
pressure when it leaves the factory. There are two
easy ways to change your pressure.
3. Turn the pump switch OFF.
4. Turn OFF the water supply.
5. Squeeze the trigger to relieve the system pressure.
a. Rotate the grip slightly to allow some flow to pass
through the left lance. See step 3.
Safety Features
I.) Safety Relief
II.) High Temperature Limit
The safety relief valve is a backup safety feature. If the
unloader malfunctions, the safety relief valve will open
and relieve system pressure.
Safety
Relief
00789
WARNING: If the safety relief valve ever discharges
water, turn the unit off and do not use the machine.
See a dealer or call Customer Service at 1-800-270-
0810.
High Temp.
Limit
00790
12
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Maintenance Instructions
WARNING: Unauthorized machine modification or use of non-approved replacement parts may cause personal
injury and/or property damage and will void the manufacturer warranty.
All mechanical equipment, no matter how well designed, will need repairs. A North Star pressure washer is no exception.
At times, a North Star pressure washer may be inoperable because repairs are required. North Star Customer Service
will assist in these repairs as needed, but if an inoperable pressure washer creates a major expense to your business
then we strongly recommend the following:
1. Have someone on staff who is trained in the operation of the pressure washer and is capable of making minor repairs
and performing all preventative maintenance procedures as outlined in the provided manuals.
2. Keep a stock of recommended service parts for maintenance and minor repairs.
Recommended Service Parts List
Following is a list of the service parts we recommend stocking.
Description
0° Nozzle
15° Nozzle
25° Nozzle
45° Nozzle
Steam Nozzle
Pump Oil
157321
25302
25309
253091
253024
-
157322
25302
25309
253091
253024
305297
22158
157325
305280
253010
253017
253025
-
157326
305280
253010
253017
253025
778945
22158
4043
4043
Chemical Injector
Spray Gun
31934
2227
31934
2227
31934
2227
31934
2227
30’ Pressure Hose
50’ Pressure Hose
Pump Seal Kit
Pump Valve Kit
Pump Inlet Valve
Kit
31911
-
AAAR1866
AAAR1864
-
-
31911
-
AAAR2741
AAAR1864
-
-
31933
31933
CA30453
CA34052
CA34668
CA30453
CA34052
CA34668
Electrode Kit
Fuel Pump
Pressure Switch
Pressure Gauge
Fuel Filter Element
RWB5780U
RWB2460U
777656
MV32154
RCR12T
RWB5780U
RWB2460U
777656
MV32154
RCR12T
RWB5780U
RWB2460U
777656
MV32154
RCR12T
RWB5780U
RWB2460U
777656
MV32154
RCR12T
Maintenance Mode
Before performing any maintenance on the pressure
washer, it must be placed in maintenance mode.
A.) Turn off water supply
B.) Bleed water from system
C.) Turn off and unplug power cord
Maintenance Schedule
What to Check
Fuel Filter
Inlet Filter
Tires
When To Check
500 hrs
What to Do
Change
Each Use
Each Use
Each Use
Each Use
Clean
Check Pressure
Check for Wear
Check for Loose
Bolts
Hoses
Bolts
13
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Cleaning The Inlet Filter
WARNING: Check whether dangerous chemicals have
been used, and take precautions when handling filters.
Checking the Hoses
WARNING: Do not use a finger or skin to check for
leaks. Escaping fluid under pressure has sufficient
force to penetrate the skin, causing serious injury. Do
not operate the pressure washer if the hose is
cracked, worn, or leaking.
A.) Check all hoses for leaks
B.) Check all hoses of worn areas
Good
Bad
00531
Water
fig00531
Inlet Filter
Clear Tube
Bad
00426
A.) Unscrew clear tube by hand.
B.) Remove Inlet filter
C.) Run water though to clean filter
Wire Mesh
Changing The Pump Oil
*Change oil after first 50 hours, then every 3 months or
500 hours
Checking the Tire Air Pressure
A.) Remove air fill cap
1.) Remove oil drain plug
B.) Fill tire to 20psi (1.4bar)
C.) Replace air fill cap
2.) Drain pump oil
3.) Replace oil drain plug
4.) Fill pump with SAE 30 non-detergent pump oil.
5.) Use dip stick to fill to proper level or sight glass on Cat
pumps.
Quantities Of Fluid
Air Fill Stem
Pump
AR
CAT
Type of Fluid
SAE 30*
SAE 30**
QTY
11.0oz (0.33L)
14.0oz (0.41L)
Air Fill Cap
00425
*Non-Detergent Oil (order pump oil Item #4043)
**Non-Detergent Oil (order pump oil Item #22158)
Burner Fuel Filter
CAT
PUMPS
AR PUMPS
Drain water which has accumulated in the fuel filter
bowl and replace the filter as needed.
Oil Fill
Oil Drain Plug
(Underneath)
Oil Drain Plug
(Underneath)
Oil Fill
Filter
Water Drain
14
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Coil Descaling
Coil Desooting
In hard water areas, scale build-up within the
heating coil will occur. Scale deposits will decrease
the water temperature rise and may eventually clog
the heating coil.
1. Mix scale remover in a 5 gallon bucket and
elevate the bucket so it is higher than the pump.
2. Attach the high pressure hose to the high
pressure water outlet on the machine, do not
hook up the spray gun.
Poor grades of fuel oil or inadequate combustion air
will cause heavy soot build-up on the outside
surface of the heating coil. These deposits will
insulate the coil. This will restrict the air flow
through the coil, further aggravating the soot build-
up.
Most coils will never require desooting. However,
to desoot a coil...
1. Wear protective clothing, goggles, and gloves.
2. Remove the fittings from the inlet and outlet of
the coil.
3. Place the other end of the high pressure hose in
the 5 gallon bucket.
4. Attach a short length of hose to the garden hose
inlet on the pump.
5. Prime the pump by filling the hose with water,
then place the end of the hose in the bucket.
3. Remove the lid from the heating chamber and
hoist the coil out. Be careful, the coil is very
heavy.
Important: Be careful not to damage the threads
on the coil inlet and outlet. If the threads get
damaged, it will be hard to reconnect and seal
the fittings on the coil inlet and outlet.
Lid
Insulation Cap
Heating Coil
Heating Chamber
Clean Inlet Strainer
When Finished
00791
6. Run the pressure washer in cold mode for 1 to 3
hours recirculating the cleaning solution.
Short High
Pressure Hose
Warning: Do not run the burner.
7. Dispose of the cleaning solution where it is not
harmful to animals or the environment.
8. Flush with fresh water and clean the inlet
strainer when finished.
00792
4. Clean the coil.
5. Reassemble the coil to the machine. Make sure
the white insulation remains in place.
6. Make sure all fittings are tight before using the
machine. Use thread sealant on all threads.
15
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Electrodes
On a yearly basis the electrodes should be
inspected and any necessary adjustments made.
1. Tip the machine back until it rests on the frame.
4. Clean off carbon deposits which may have
accumulated on the tips of the electrodes.
5. Reset the spacing as shown below.
Electrodes
4 Nuts
1/8”
1/16”
00793
2. Remove the 4 nuts that attach the burner to the
7/16”
heating chamber.
You do not have to
disconnect the fuel lines or the electric cords.
3. Let the burner fall away from the heat exchanger.
00794
16
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Moving and Handling Instructions
Maneuvering Your Pressure Washer
Lifting Your Pressure Washer
1.) Pull the handle back with both hands.
2.) Rotate the handle downward to a comfortable height.
3.) Push the pressure washer forward as you walk.
1.) To reduce risk of injury, it is recommended to use a
hoist to lift this pressure washer.
2.) Lift from lifting point
Handle
Lift Here
Long Term Storage
During cold weather, store the pressure washer indoors and move it outdoors before starting.
Follow these instructions to prevent the pump from freezing during storage.
Winter Storage:
Items needed: 12” piece of garden hose or equivalent,
funnel and RV antifreeze (approximately 2gallons).
1.) Attach the garden hose with funnel to the pump inlet
(see illustration).
2.) Pour RV antifreeze into the funnel.
3.) Turn the unit on, burner off.
4.) Let the pump run until antifreeze comes out the high
pressure outlet.
5.) It will take about 1.5 gallons of anitfreeze to fill the
pump and heat exchanger coil.
RV Antifreeze
6.) Drain all water from the high pressure hose. Depress
trigger on gun and drain all water out of gun/lance.
Funnel
Hose
Water Inlet
17
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Troubleshooting Guide
Pressure Washer Will Not Run - No Power
Causes
Machine not plugged in
GFCI tripped
Machine turned OFF
Line circuit breaker tripped
Solutions
Plug machine in
Make sure machine is dry. Press RESET on the GFCI
Turn Pump switch ON
Check for tripped circuit breaker in building
Circuit Breaker Trips During Operation
Causes
Voltage too low
Solutions
Check the voltage
Circuit Breaker Overloaded
Make sure to use NEMA specified receptacle. Make sure there is no other
equipment using the same circuit. - see Specifications
Check/adjust pressure setting on unloader.
Pressure set too high
Pressure Washer Runs But No Pressure
Causes
Partially clogged or damaged nozzle
Low water flow
Solutions
Clean or replace nozzle
Make sure the water supply is more than 4 gpm
Pressure Washer Surges Or Cycles While In Bypass
Causes
Solutions
Leak between unloader and gun.
Gun leaking internally
Check all connections between unloader and gun for leaks. Tighten loose
components and replace damaged components.
Replace spray gun
Smoke From Heat Exchanger
Causes
Solutions
Air band not adjusted properly due to Adjust the air band until the burner burns cleanly. See Oil Burner under
different elevation
Installation Instructions
Poor quality fuel
Use Kerosene for the cleanest burn
Water Not Heating Sufficiently
Causes
Scale build-up in coil
Coil is full of soot
Solutions
See Coil Descaling under Maintenance Instructions
See Coil Desooting under Maintenance Instructions
Safety Relief Valve Sprays Water
Causes
Unloader/Burner Control Problem
Solutions
Call customer service
Poor Or No Detergent Supply
Causes
Soap control knob set too low.
Inadequate detergent supply
Solutions
Adjust soap control knob
Refill detergent container. Make sure the chemical strainer is fully
submerged
High pressure hose too long
Chemical strainer or injector clogged
Use less hose. Move machine closer to the work.
Clean the strainer and injector. Always start with a clean detergent
container. Run clean water through the injector after each use.
18
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HOTPWR 157321,157322,157325, 157326
Parts Breakdown
19
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HOTPWR- 157321,157322,157325,157326
ITEM PART#
DESCRIPTION
QTY
1
1
1
1
2
2
2
1
1
2ft
1
1
1
1
1
1
1
1
1
1
1
1
1
30”
1
2
4
30”
1
1
1
MODEL
ITEM PART #
DESCRIPTION
QTY
1
1
1
1
1
1
2
4
2
2
1
1
1
1
1
1
MODEL
157321, 157325
157322, 157326
1
2
3
4
5
6
7
8
305410 Label, Caution Hot
35331 Lid, Heat Exchanger
38398 Insulation Cap
33573 Coil
777913 3/8” Nipple
30048 1/2” NPT x 3/8”: NPT Nipple
305208 1/2” Tee, Plated Steel
305236 High Temp. Limit Switch
305422 Adjustable Thermostat,
30501 1/4” Split Loom
all
all
all
all
all
all
all
39
37511 Control Decal, Pro Series
37512 Control Decal, Ind Series
37509 Service Panel
305180 Switch, 120V Lamp
305261 Switch, 240V Lamp
37508 Control Switch
305200 Locking Collar
30754 Leather Washer
31976 1/4”Fuel Tank Fitting
306401 Rubber Seal, Fuel Tank
777795 Frame
40
41
all
157321, 157322
157325, 157326
42
44
45
46
47
48
49
50
all
all
all
all
all
all
all
all
157321, 157325
157322, 157326
157322, 157326
9
10
11
12
33387 Insulation Can
777658 Fire Chamber
all
all
3054007 Fuel Tank
305206 Fuel Cap
305230 Label, Professional Series
305248 Label, Industrial Series
305427 Label, Pictorial Warnings
36180 Vented Wrap, Stainless
22502 Strain Relief, 1/2” NPT
305267 Nut, 1/2” NPT for Strain Relief
777166 Burner
157321, 157325
157322, 157326
777616 Motor, 1.5HP
778670 Motor, 5HP
157321, 157322
51
13
14
16
17
18
all
all
all
all
157326
all
all
all
55
56
59
60
61
37549 High Pressure Hose Assy
777797 1/2” NPT Elbow
NPN
1
1
5
1
Pump Assembly
157321, 157322
157325, 157326
157321, 157322
157325, 157326
777111 Grommet
all
777167 Burner
25302
305280
25309
253010
253091
253017
253024
253025
305297
778945
157321, 157322
157325, 157326
Nozzle, 0°, #4.0 (Red)
Nozzle, 0°, #5.0 (Red)
Nozzle, 15°, #4.0 (Yellow)
Nozzle, 15°, #5.0 (Yellow)
Nozzle, 25°, #4.0 (Green)
Nozzle, 25°, #5.0 (Green)
Nozzle, 40°, #4.0 (White)
Nozzle, 40°, #5.0 (White)
Nozzle, 15°, Steam
19
30823 Power Cord, w/GFI, 115V
777122 Power Cord, w/ GFI, 230V
305239 1/4” NPT Nipple 3” Long
777345 Hose, Fuel Line
1
62
63
64
65
66
1
1
1
1
1
1
1
1
1
1
4
1
3ft
1
157321, 157322
157325, 157326
157321, 157322
157325, 157326
157321, 157322
157325, 157326
157322
157326
157321, 157325
157322, 157326
20
21
22
23
24
25
26
all
all
all
all
all
all
32308 Fuel Filter
777340 1/4”NPT x 1/4” Hose Barb
777834 Hose Clamp, 1/4”
777345 Hose, Fuel Line
31911 30 ft. x 3/8” Hose Yellow
31914 50 ft. x 3/8” Hose, Yellow
313108 3/8” Quick Coupler, Female
30507 Nozzle, 1/4” NPT, Chemical
157321, 157325
157322, 157326
Nozzle, 15°, Steam
305233 Label, Nozzle Identification
305296 Label, Nozzle ID w/ Steam
777146 Grommet
305411 Cord Hanger
36302 Fiberglass Rope
38400 Heat Shield
27
28
29
30
31
32
33
34
35
36
37
38
all
all
all
all
all
all
all
all
all
all
all
all
67
69
71
72
73
74
all
all
all
all
all
all
2234
1/4” Nozzle Quick Coupler
1
1
1
1
1
1
1
2
3ft
1
319152 Dual Lance
313107 3/8” Quick Coupler, Male
2227
777247 Control Box
2212
ST12
30388 Wheel/Tire Assembly
777165 Clear Hose Chemical Line
31934 Chemical Injector
Spray Gun. 3/8” FPT Inlet
313109 Quick Coupler
38120 Insulation Gasket
1
1
Chemical Strainer
Electric Shock Label
20
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HOTPWR- 157321,157322,157325,157326
ITEM
PART #
777165
777834
38584
777411
777411
2296
777656
305301
305289
305281
305306
777410
777410
777749
37549
35104
22392
777839
777836
35918
2264
777119
38626
35169
38596
DESCRIPTION
QTY
12”
2
1
2
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
12”
2
1
1
1
1
1
1
1
MODEL
all
1
2
3
4
¼” hose
Hose clamp
Easy start valve
3/8 tee
all
all
157321,157325
157322, 157326
157321, 157325
all
3/8 tee
5
6
3/8 hex nipple
Pressure switch
AR XTV pump, 2gpm
Cat 2SF pump, 2gpm
AR XMV pump, 3.5gpm
Cat 2SF pump, 3.5gpm
3/8 street elbow
3/8 street elbow
Unloader
High pressure hose assembly
Safety relief valve
Safety relief valve
3/8npt x ½ hose barb
Thermal protector
Thermal protector
½” hose
157321
157322
157325
157326
7
8
157321,157325
157322, 157326
157322,157326
all
157321, 157322
157325 157326
157321, 157325
157321,157325
157322, 157326
all
9
10
11
12
13
14
15
16
17
Hose clamp
1/4npt x ½ hose barb
Inlet filter
all
157321, 157325
157321,157325
157322, 157326
all
157322, 157326
157322, 157326
157322, 157326
Inlet filter
18
19
20
21
777340
777347
32808
1/4npt x ¼ hose barb
3/8 street tee
3/8npt x ½ hose barb elbow
¼npt x ½ hose barb
777840
21
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2SFX
ITEM PART #
5
6
DESCRIPTION
89551 Screw, HHC (M6x16)
150810 Washer, Seal (M6)
MODEL
all
QTY
3
3
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
3
3
3
3
3
3
1
3
3
3
3
ITEM PART #
DESCRIPTION
QTY
3
3
3
3
3
3
3
3
3
1
6
1
136
137
138
152
157
159
166
167
168
185
188
255
44872 Spring, Inlet Valve
88575 Washer, Conical (M6)
81240 Nut, Hex (M6)
26089 O-Ring, Adapter - 80
45859 Spacer, Discharge, Seat
26089 O-Ring, Adapter - 80
43723 Valve
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
8
44857 Cover, Bearing, Inner
14044 O-Ring Bearing Cover
44859 Seal, Oil
14488 Bearing, Ball, Inner
45876 Rod, Connecting
44929 Crankshaft, 3450RPM, 5/8”, 3.3mm 2SFX22ES
542441 Crankshaft, 3450RPM, 3/4”, 4.7mm 2SFX30GS
45100 Crankshaft, 3450RPM, 3/4”, 5.6mm 2SFX35GS
10
11
15
20
25
541062 Spring
44565 Retainer, Spring
44879 Manifold, Discharge
87859 Screw, HSH (M8x75)
30517 Kit, Bolt Mount
26
27
32
33
37
38
48
49
53
12385 Ring, Retaining
15710 Bearing, Ball, Outer
45690 Cap, Oil Filler
14179 O-Ring, Oil Filler Cap - 70
43987 Gauge, Bubble Oil
44428 Gasket, Flat Flex, Oil Gauge - 80
44842 Plug, Drain (1/2” NPT)
14179 O-Ring, Drain Plug - 70
541018 Crankcase
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
all
VALVE KIT
INLET VALVE KIT
34056
34668
ITEM
152
157
159
166
167
168
PART #
26089
45859
26089
43723
541062
44565
QTY
ITEM
134
135
136
137
138
152
159
PART #
45854
44871
44872
88575
81240
26089
26089
QTY
3
3
3
3
3
3
3
3
3
3
3
3
3
64
16948 Rist, Pin
65
69
70
540073 Rod, Plunger
20017 Washer (M24)
25461 Seal, Oil
100
106
110
124
125
134
135
44869 Retainer, Seal
44876 LPS w/S-Spg
44874 Manifold, Inlet
45847 Ceramic Plunger
43245 HPS w/S PS
SEAL KIT
34053
ITEM
106
125
152
159
PART #
44876
43245
26089
26089
QTY
3
3
3
3
45854 Valve, Inlet
44871 Spacer
22
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AR XMV35G25D-F23
ITEM
1
2
3
4
5
6
7
8
PART #
DESCRIPTION
QTY
6
6
6
6
1
3
3
3
1
1
1
1
1
1
3
1
6
1
3
3
3
3
3
3
3
2
2
3
ITEM
31
32
33
34
35
36
37
38
40
41
42
44
60
61
62
PART #
1780100
770260
1260440
820360
DESCRIPTION
Rear Piston Guide
O-Ring
Gasket
Plug
O-Ring
Head
Washer
Screw
QTY
3
2
3
1
1
1
8
8
1
1
1
4
1
1
1
960160
1260162
1269050
880830
O-Ring
Plug
Complete Valve
O-Ring
620301
Plug
180101
1780130
1260130
1780090
1780010
1266740
1260790
1780550
1780490
880130
1780050
1780510
1200430
1780010
1780040
1780060
480480
Support Ring
Gasket
Piston Guide
Pump Body
Cap
1780380
1381550
680570
1321190
1321080
480671
9
Bearing
Snap Ring
Seal
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
27
28
30
Circlip
Snap Ring
Bearing
180030
Screw
1780630
1780910
1780430
Hollow Shaft
F33 Flange
Bushing
Oil Cap
Piston Ring
O-Ring
Screw
VALVE KIT
WATER SEAL KIT
Complete Cover
Con Rod
Guiding Piston
O-Ring
Spacer Disc
Piston
1864
2741
ITEM
3
4
PART #
1269050
880830
QTY
6
6
ITEM
7
32
PART #
1260130
770260
1260440
QTY
3
3
3
1260091
1780070
1260100
1260110
740290
33
Piston Washer
Nut
O-Ring
Plug
Seal
880530
1260460
23
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AR XTV2G15EBA-F8
AR XTV3G16D-F8
ITEM
1
2
7
8
PART #
1322730
620301
1260160
960160
1269050
880830
DESCRIPTION
Head Bolt TCEI M6x60
Screw
Valve Cap
O-Ring
Complete Valve
O-Ring
Support Ring
Packaging Gasket
Piston Guide
O-Ring
Packaging Seal Gasket
Piston Oil Seal
Shaft Side Plug
O-Ring
Circlip
Bearing
Bushing
Pump Body
Dip Stick
Screw
Copper Washer
Piston
QTY
6
1
6
6
6
6
3
3
3
3
3
3
1
1
1
1
1
1
1
3
3
3
3
3
3
3
6
1
3
1
3
2
1
ITEM
41
42
62
73
73
74
75
77
78
79
80
81
82
83
84
PART #
180101
820360
DESCRIPTION
QTY
1
1
1
1
1
1
4
1
4
1
1
4
1
1
1
O-Ring
Head Tap Bolt
Seal Ring
Shaft(1572211)
Shaft(1572231)
Ring Bearing
Bolt
Type F8 Flange
Bolt/Flange Motor
Washer
480671
9
1321820
1321830
1321190
650610
1320060
1200430
780230
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
36
37
38
39
40
1260140
1260130
1260151
1260420
1260440
1260460
1320320
1320360
1260790
1320370
1320330
1320010
880130
1260110
1260100
1260120
480480
1260091
1260070
1260080
1260760
1321030
1260060
1260040
740290
780060
Bolt
Bolt
Side Cover
Circlip
Snap Ring
1321780
1321420
1260790
1321080
VALVE KIT
WATER SEAL KIT
1854
1866
ITEM
9
10
PART #
1269050
880830
QTY
6
6
ITEM
11
12
14
15
PART #
1260140
1260130
1260420
1260440
QTY
3
3
3
3
O-Ring
Disc Separator
Piston Guide
Piston Pin
Screw
Rear Cover
Con Rod
Rear Gasket Cover
O-Ring
Oil Drain tap Bolt
Pump Head
880530
1320021
24
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25
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26
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27
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|
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