M157305H
ITEM NUMBER: 157305,306,307,308
SERIAL NUMBER:
HP:______ Volts:______ Amp:______ Ph:_____
RPM:____ PSI:____ GPM:____ Nozzle Size:_____
Pump:___________ Hose:______ Lance:_______
Max. Discharge Temperature:_____________
Proven Performance
K - B AR 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 will
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 Universal Tractor Transmission Oil (UTTO) or Mobil1 Synthetic15w50 for Comet
pumps and Cat pump oil (item# 22158) for Cat 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.
Maintenance Pump Oil: change after first 50 hours, then every 3 months or 500 hours.
Schedule
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
157305
1700 psi
157306
157307
2000 psi
157308
2750 psi
Pressure Rating
Flow Output
Pump Type
2700 psi
1.5 gpm
Ceramic Triplex
Plunger
2.5 gpm
Ceramic Triplex
Plunger
1.5 gpm
Ceramic Triplex
Plunger
2.5 gpm
Ceramic Triplex
Plunger
Water Supply
Standard tap water
@ 20-100psi
1.5 hp
Standard tap water
@ 20-100psi
5 hp
Standard tap water
@ 20-100psi
2.0 hp
Standard tap water @
20-100psi
5 hp
Motor Horsepower
Maximum
Temperature
250°F
250°F
250°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
Power
3/8” x 50’
3/8” x 50’
3/8” x 50’
3/8” x 50’
Requirements
Dedicated NEMA
Receptacles
Volts
5-20R
6-30R
5-20R
6-30R
115V
20A
230V
30A
115V
20A
230V
30A
Amps
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
385 lb.
415 lb.
385 lb.
415 lb.
4
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Machine Component Identification
157305, 157306, 157307, 157308
Ref # Description
Ref # Description
Ref # Description
1
2
3
4
5
6
7
8
9
Exhaust Vent
High Pressure Water Outlet
Motor
Burner
Fuel Fill Cap
Fuel Tank
Control Box
Elbow
Swivel Fitting
10
11
12
13
14
15
16
17
18
Flow Switch
Tee
Safety Relief Valve
Pump
Gun Hooks
Power Switch
Thermostat
Service Panel
Nozzles
19
20
21
22
23
24
25
26
Fuel Filter
Quick Connector
Spray Gun
Grip
Lance Wand
Power Cord Hangers
High Pressure Hose Hanger
Garden Hose Water Inlet
5
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Installation Instructions
I.) Unpack
Separate and identify all components. Use the assembly instructions in this manual for assembly.
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
Qty-6
6
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Wheel Retainer
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 a hex wrench.
Description
Wheel
Wheel Retainer
Qty.
2
2
Wheel
Grease Zerk
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
7
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III.) Pump Preparation
*Comet Pumps Only
A.) Replace shipping oil plug with vented plug.
B.) Make sure the oil is 1/2 way up oil sight glass.
Quantities Of Fluid
Pump
Type of
Fluid
QTY
Comet BXD 1617
Comet BXD 2527G-E UTTO*
UTTO*
4.3oz (0.13L)
4.3oz (0.13L)
Cat 2DX
Cat 3DX
SAE 30** 8.5oz (0.25L)
SAE 30** 8.5oz (0.25L)
*Universal Tractor Transmission Oil or Mobil 1 15W50
**SAE Non-Detergent (order Cat Pump Oil Item# 22158)
**Cat Pumps Only
A.)Remove shipping tape from oil fill cap
B.)Make sure the oil is 1/2 way up oil sight glass.
8
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V.) Getting Started
IMPORTANT: Proper initial installation of equipment
will assure more satisfactory performance, longer
service life and lower maintenance cost.
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.
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.
Air Band
White
Arrow
Locking
Burner
Partition
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
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.
position previously noted.
screw.
Tighten the locking
5.) Fine tune the burner air by loosening the shutter lock
screw and turning the shutter until the exhaust is
CAUTION: All venting must be in accordance with
applicable federal and state laws and local
ordinances. Consult local heating contractors.
Shutter
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
Shutter Lock
Screw
cleanest. Tighten the shutter lock screw.
CAUTION: If white smoke appears from the burner
exhaust vent during start-up or operation,
discontinue use and readjust air bands.
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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. 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.
II.) Check Your Water Supply
; A.) Make sure the water supply is clean. Debris can
cause excess pump wear and reduce
performance.
4. If detergents will be used, only use detergents
intended for pressure washers. Follow instructions
on the detergent container.
; 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 = 3 gpm
Then required flow = 3 x 1.20 = 3.6 gpm
5 gallons / 3.6 gpm = 1.39 minutes
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.
1.39 min x 60 sec/min = 83 seconds
Therefore, you must be able to fill a
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.
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.
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V.) Attach Nozzle
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. 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 temperature
setting is reached, the burner will automatically turn
off.
Nozzle
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.
To Clean
Color of Nozzle: Spray Angle
Used For:
Highest Impact
Tough Stains/
Stripping
General
Light Cleaning
Steaming
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.
CAUTION: Be careful on painted or delicate
surfaces. The pressure may damage the surface if
the nozzle is too close.
Red
0
Yellow
15
Green
White
Yellow
Black
25
40
15
65
Chemical
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.
Your pressure washer is equipped with six nozzles. To
install a nozzle simply pull back the collar towards the
lance and push the nozzle into the coupler. Once the
connection is made, pull on the nozzle to assure a tight
connection.
Lance
Nozzle
Coupler
Collar
WARNING: Only use North Star pressure washer
chemicals or chemicals specifically formulated for
pressure
washers.
Follow
the
chemical
manufacturer’s recommendations. Understand all
safety precautions and first aid for all chemicals.
CORRECT
INCORRECT
1. Press the braided chemical hose over the chemical
injector on the pump and submerge the suction
strainer connected to the braided chemical hose into
the chemical solution.
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.
Chemical
Injector
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.
Braided Hose
and Strainer
Diluted
Chemical
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Unloader
Chemical
Injector
Braided Hose
and Strainer
Diluted
Chemical
Unloader
2. The black, low pressure chemical nozzle must be
used to spray chemicals.
3. Squeeze the spray gun trigger. The chemical injector
will draw the chemical into the water stream.
4. Spray detergent onto the surface and allow it to soak.
Chemicals need time to work properly. Follow the
chemical manufacturer’s recommendations for the
recommended time.
5. Change back to high pressure to rinse by inserting
one of the high pressure nozzles.
6. Hold the lance with two hands in a sturdy stance
position.
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.
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.
Caution: Be careful on painted or delicate surfaces,
the pressure may damage the surface if the nozzle is
too close.
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.
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. To adjust the
pressure, turn the unloader knob counter-clockwise.
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.
3. Turn the pump switch OFF.
4. Turn OFF the water supply.
5. Squeeze the trigger to relieve the system pressure.
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Safety Features
I.) Safety Relief
The safety relief valve is a backup safety feature. If the
unloader malfunctions, the safety relief valve will open
II.) High Temperature Limit
Safety
Relief
High Temp.
Limit
00789
00790
and relieve system pressure.
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.
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.
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
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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
Screen
Good
Bad
Water
FIG02300
Bad
A.) Unscrew clear tube by hand.
B.) Remove Inlet filter
Wire Mesh
C.) Run water though to clean filter
Changing The Pump Oil
*Change oil after first 50 hours, then every 3 months or
500 hours
1.) Remove oil drain plug
2.) Drain pump oil.
Checking the Tire Air Pressure
A.) Remove air fill cap
B.) Fill tire to 20psi (1.4bar)
C.) Replace air fill cap
3.) Replace oil drain plug.
4.) Fill pump oil according to table below.
5.) Use sight glass to fill to proper level.
Quantities Of Fluid
Pump
Comet
CAT
Type of Fluid
UTTO*
SAE 30**
QTY
4.3 oz (0.13L)
8.5 oz (0.25L)
Air Fill Stem
Air Fill Cap
*Universal Tractor Transmission Oil of Mobil 1 15W50
**Non-Detergent Oil (order pump oil Item #22158)
Burner Fuel Filter
Drain water which has accumulated in the fuel filter
bowl and replace the filter as needed.
Sight
Comet
Pump
Cat
Pump
Filter
Oil Fill
Oil Fill
Water Drain
Oil Drain Plug
(Underneath)
Oil Drain Plug
(Underneath)
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
00791
Clean Inlet Strainer
When Finished
6. Run the pressure washer in cold mode for 1 to 3
hours recirculating the cleaning solution.
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.
Short High
00792
Pressure Hose
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.
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4. Clean off carbon deposits, which may have
accumulated on the tips of the electrodes.
5. Reset the spacing as shown below.
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.
2. Remove the 4 nuts that attach the burner to the
Electrodes
4 Nuts
1/16”
00793
1/8”
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.
7/16”
00794
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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 (see picture)
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 2 gallons).
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 and make sure the burner is off.
4.) Let the pump run no more than 15 seconds at a time
until antifreeze comes out the high pressure outlet.
5.) It will take about 1.5 gallons of antifreeze 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
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Troubleshooting Guide
Pressure Washer Will Not Run - No Power
Causes
Machine not plugged in
Solutions
Plug machine in
GFCI tripped
Make sure machine is dry
Press RESET on the GFCI
Turn Pump switch ON
Machine turned OFF
Line circuit breaker tripped
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
Pressure set too high
Check/adjust pressure setting on unloader
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 the required flow
Pressure Washer Surges Or Cycles While In Bypass
Causes
Solutions
Leak between pump and gun
Check all connections between pump and gun for leaks
Tighten loose components and replace damaged components
Replace spray gun
Gun leaking internally
Smoke From Heat Exchanger
Causes
Solutions
Air band not adjusted properly due to Adjust the air band until the burner burns cleanly
different elevation
See Oil Burner under 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
Solutions
Causes
Unloader/Burner Control Problem
Call customer service
Poor Or No Detergent Supply
Causes
Inadequate detergent supply
Solutions
Refill detergent container
Make sure the chemical strainer is fully submerged
High pressure hose too long
Use less hose
Move machine closer to the work
Chemical strainer or injector clogged
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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M157305H - 157305,157306,157307, 157308
Parts Breakdown
19
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M157305H - 157305,157306,157307, 157308
Parts List
ITEM PART # DESCRIPTION
QTY
1
1
1
1
1
1
1
1
1
49”
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
4
4
25”
10”
25”
1
MODEL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ITEM PART # DESCRIPTION
QTY
1
1
2
3
1
1
1
2
MODEL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
1
2
3
6
7
8
9
38525 50’ PW Hose Assy
35
36
37
38
38379 Swivel Fitting, 6MP-8FPS
5027 Elbow, 8MP-FP
38509 Threaded Gun Hook
38510 Threaded Hose Hook
777914 Quick Couple, 3/8” FPT
777915 Quick Couple Nipple, 3/8” FPT
777904 Quick Coupler, 1/4” FPT
779166 Lance Assembly
313107 Quick Couple, 3/8” FPT
779168 Gun Trigger Assembly
39 777111 Grommet
40 778092 Hot Water Frame
41
42
32308 Fuel Filter, Water Separator
30388 Pneumatic Wheel/Tire
10 22622 Gun Grip
11 38398 Insulation Cap Assembly
12 36302 Fiberglass Rope
13 35331 Heat Exchanger Lid
14 305410 ~Caution Hot~ Decal
15 777913 Quick Couple Nipple, 3/8”
16 30048 Reducer, 8MP – 6FP
17 305208 Tee, 8FP
43 305408 Axle
44 305200 Wheel Retainer
1
2
777165 Braided Chemical Hose, 1/4”
777165 Braided Chemical Hose, 1/4”
36” 157305, 157306
36” 157307, 157308
45
46
2212
Chemical Strainer
1
1
1
1
1
1
1
1
1
1
1
1
6
1
1
1
1
1
4
1
1
1
1
1
ALL
157305, 157306
157305
47 778236 Thread-on Coupler, 22mm
779402 Comet BXD 1617
18 778179 Kink Guard
ALL
ALL
ALL
779403 Comet BXD 2527G-E
778154 Cat 2DX
157306
157307
157308
157305
48
19 779228 Coil Assembly
20 33387 Insulation Can
21 779232 Fire Chamber
38518 Cat 3DX
777616 Leeson, 1.5 HP Motor
ALL
49
37530 Vented Wrap
36180 Vented Wrap, Stainless
157305, 157306
157307, 157308
ALL
778670 Leeson 5 HP Motor
777617 Leeson, 2 HP Motor
157306, 157308
157307
22
23 38120 Insulation Gasket
24 778111 Heat Exch. Mount Weld.
50 779303 Control Box Cover
51 31985 Grommet
52 779301 Control Panel Weldment
ALL
ALL
ALL
ALL
ALL
777166 Burner, 120V
778189 Burner, 230V
157305, 157307
157306, 157308
ALL
157306, 157308
ALL
25
53
54
55
56
57
35198 Grommet, 7/16” ID
778197 Nozzle 5-pack, #2.0
38531 Nozzle 5-pack, #3.0
778198 Steam Nozzle, 15 Deg
778151 DP Contactor, 120V/25A
778152 DP Contactor, 230V/30A
30754 Leather Washer
26 305267 Strain Relief Nut
27 22502 Strain Relief
157305, 157307
157306, 157308
ALL
157305, 157307
157306, 157308
ALL
28 777340 Hose Barb, 1/4” MPT x 1/4”
29 777834 Hose Clamp, 1/4”
30A 777345 Fuel Line, 1/4” Burner-Tank
30B 777345 Fuel Line, 1/4” Filter -Burner
30C 777345 Fuel Line, 1/4” Tank to Filter
ALL
ALL
ALL
ALL
58 30540071 Fuel Tank
ALL
ALL
31
35104 Pop Off Valve, 3/8”
157305, 157307
157306, 157308
59 305206 Printed Fuel Cap
60 777410 Elbow, 3/8” NPT
61 305266 Strain Relief, 1/2” NPT
778194 Motor Power Cord 14/3
22392 Pop Off Valve, 3/8”
1
157305,157306
157306,157308
157305
157306, 157307,
157308
778195 3000PSI RXS Hose, 3/8x18”
778193 3000PSI RXS Hose, 3/8x26”
777347 Tee, 6MP-6FP-6FP
18” 157305, 157306
26” 157307, 157308
1
32
33
62
ALL
778191 Motor Power Cord 12/3
1
34 37537 Flow Switch
1
ALL
778141 GFCI Cord, 120V/20A, 36 ft
63
1
1
157305, 157307
157306, 157308
778142 GFCI Cord, 240V/30A, 36 ft
20
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ITEM
PART #
779402
779403
778154
38518
DESCRIPTION
Comet BXD 1617
Comet BXD 2527G-E
Cat 2DX
QTY
1
1
1
1
MODEL
157305
157306
157307
157308
1
Cat 3DX
2
3
4
5
35918
Thermal Protector, 1/4”
1/4” MPT x 1/4” Hose Barb
22mm Thread-On Coupler
3/8” Street Elbow
3/8” NPT Easy Start Valve
3/8 Plug
3/8” Tee
Inlet Filter
Braided Chemical Hose, ¼”
1
1
1
1
1
1
1
1
157307, 157308
157308
157305
157305, 157306
157308
777340
778236
777410
38584
777837
777411
38596
6
157307
7
8
9
157307, 157308
157307, 157308
157308
777165
12”
21
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22
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23
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24
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