Mi-T-M HDS series User manual

Operator's Manual 1©Copyright 2006 Form #37-0624-E/F/S-082206
CAUTION
RISK OF INJURY!
READ MANUAL BEFORE OPERATING!
This manual is an important part of the pressure washer and must
remain with the unit when you sell or rent it!
OPERATOR'S MANUAL FOR
HDS-SERIES
HOT WATER
PRESSURE WASHERS

2 Operator's Manual
Table of Contents
INTRODUCTION..........................................................................................................................................3
IMPORTANT SAFETY INSTRUCTIONS ..................................................................................................4-9
RISK OF EXPLOSION OR FIRE ..................................................................................................4-5
RISK OF ASPHYXIATION................................................................................................................5
RISK OF INJECTION OR SEVERE CUTTING INJURY..................................................................6
RISK OF ELECTROCUTION OR ELECTRICAL SHOCK................................................................6
RISK OF BURNS .............................................................................................................................7
RISK OF BURSTING .......................................................................................................................7
RISK FROM MOVING PARTS.........................................................................................................7
RISK OF BODILY INJURY ............................................................................................................8-9
FEATURES & LISTINGS......................................................................................................................10-11
INSTALLATION & PREPARATION ......................................................................................................12-16
ATTIRE ..........................................................................................................................................12
SET-UP ..........................................................................................................................................12
ENGINE/BURNER FUEL TANKS ..................................................................................................13
DUAL LANCE ASSEMBLY WITH ADJUSTABLE PRESSURE ......................................................13
QUICK-CONNECT NOZZLES .......................................................................................................14
NOZZLE CONNECTION................................................................................................................14
WATER SUPPLY............................................................................................................................15
UNLOADER ...................................................................................................................................16
GENERATOR AND GFCI OUTLET................................................................................................16
GENERATOR.................................................................................................................................16
GFCI OUTLET ...............................................................................................................................16
PRE-START INSPECTION PROCEDURES..................................................................................16
OPERATING INSTRUCTIONS ...........................................................................................................18-20
FLUSHING THE SYSTEM ............................................................................................................18
START-UP/COLD WATER OPERATION .......................................................................................18
HOT WATER OPERATION ............................................................................................................19
STEAM OPERATION.....................................................................................................................19
STEAM OPTION............................................................................................................................19
CLEANING WITH DETERGENT-HIGH PRESSURE (COLD/HOT/STEAM) .................................20
SHUTDOWN..................................................................................................................................20
STORAGE & MAINTENANCE..............................................................................................................21-24
SPECIFIC MAINTENANCE ......................................................................................................21-23
MAINTENANCE-SEASONAL.........................................................................................................24
TROUBLESHOOTING..........................................................................................................................25-27
MAINTENANCE CHART ...........................................................................................................................28
STATEMENT OF WARRANTY .............................................................................................................29-31

Operator's Manual 3
INTRODUCTION
Congratulations on the purchase of your new hot water pressure washer! You can be assured your hot water pressure
washer was constructed and designed with quality and performance in mind. Each component has been rigorously
tested to ensure the highest level of acceptance.
This operator's manual was compiled for your benet. By reading and following the simple safety, installation, operation,
maintenance and troubleshooting steps described in this manual, you will receive years of trouble free operation from
your new hot water pressure washer. The contents of this manual are based on the latest product information available
at the time of publication. The manufacturer reserves the right to make changes in price, color, materials, equipment,
specications or models at any time without notice.
! IMPORTANT !
Theseparagraphsaresurroundedbya"SAFETYALERTBOX". Thisboxisusedtodesignateand
emphasize Safety Warnings that must be followed when operating this pressure washer.
Accompanying the Safety Warnings are "signal words" which designate the degree or level
of hazard seriousness. The "signal words" used in this manual are as follows:
DANGER: Indicates an imminently hazardous situation which, if not avoided, WILL
result in death or serious injury.
WARNING: Indicates a potentially hazardous situation which, if not avoided, COULD "
result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, MAY
result in minor or moderate injury.
The symbols set to the left of this paragraph are "Safety Alert Symbols." These symbols
are used to call attention to items or procedures that could be dangerous to you or other
persons using this equipment.
ALWAYS PROVIDE A COPY OF THIS MANUAL TO ANYONE USING THIS EQUIPMENT. READ
ALLINSTRUCTIONSBEFOREOPERATINGTHISPRESSUREWASHERANDESPECIALLYPOINT
OUT THE "SAFETY WARNINGS" TO PREVENT THE POSSIBILITY OF PERSONAL INJURY TO
THE OPERATOR. ONLY TRAINED OPERATORS SHOULD USE THIS PRODUCT!
Once the unit has been removed from the box, immediately write in the serial number of your unit in the space provided
below.
SERIAL NUMBER_________________________________
Inspect for signs of obvious or concealed freight damage. If damage does exist, le a claim with the transportation
company immediately. Be sure that all damaged parts are replaced and the mechanical and electrical problems are
corrected prior to operation of the unit. If you require service, contact your Customer Service Representative.
Please have the following information available for all service calls:
1. Model Number
2. Serial Number
3. Date and Place of Purchase

4 Operator's Manual
POTENTIAL CONSEQUENCE PREVENTION
IMPORTANT SAFETY INSTRUCTIONS
WARNING: When using this product, precautions should always be observed, including the following.
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
RISK OF
EXPLOSION OR FIRE
Serious injury or death may occur
from normal sparks in the multiple
ignition sources or engine/burner
exhaust.
Serious injury or death may occur as
a result of improper fueling.
Always operate 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 fuel tanks.
Never ll the fuel tanks while the engine is
running or hot. Allow the engine to cool two
minutes before refueling.
Do not refuel indoors or in a poorly ventilated
area.
Always refuel slowly to avoid the possibility of
spilled fuel which may cause a risk of re.
Engine Fuel Tank:
If using a Gasoline Engine, refuel with gasoline
only. Do not use diesel or fuel oil.
Diesel Fuel Tank:
If using a Diesel Engine, refuel with diesel only.
Do not use gasoline.
Burner Fuel Tank:
When refueling the Burner Fuel Tank, use
No. 1 or No. 2 fuel oil/diesel or kerosene. Do
not use gasoline, crankcase drainings, or oil
containing gasoline or solvents.
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 the battery.
Be certain to disconnect the battery ground
terminal beforeservicing. Whendisconnecting
the cable from the battery, start with the
negative terminal, and 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.
HAZARD
Serious injury or death may occur
from the battery.

Operator's Manual 5
HAZARD POTENTIAL CONSEQUENCE PREVENTION
IMPORTANT SAFETY INSTRUCTIONS
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
Serious injury or death may occur
frominhalingengine/burnerexhaust
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.
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. In the state of California, the above
is required by law. (Section 4442 and 4443 of
the California Public Resources Code.) Other
states may have similar laws. Federal laws
apply on Federal lands.
This pressure washer has a Safety Relief
Valve which should never be altered, modied,
removed or made inoperative. If the device
fails, replace immediately with genuine
manufacturer replacement part.
Never operate this pressure washer in an
enclosed area. Always make certain 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.
Follow all safety instructions provided with the
materialsyouare spraying. Useof arespirator
may be required when working with some
materials. Do not use this pressure washer
to dispense hazardous detergents.
RISK OF
ASPHYXIATION
Serious injury or death may occur
from a ground re caused by a mufer
spark.
RISK OF FIRE
Serious injury or death may occur
if system safety's are not properly
maintained.

6 Operator's Manual
HAZARD POTENTIAL CONSEQUENCE PREVENTION
IMPORTANT SAFETY INSTRUCTIONS
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
Keep clear of nozzle and spray! Never put
your hand, ngers or body directly over the
spray nozzle.
Never point the high pressure discharge spray
at yourself or anyone else. This equipment is
to be used only by trained operators.
Always keep operating area clear of all
persons.
Do not allow children to operate this unit.
Seek emergency medical care if the spray
appears 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, Never place your hand
directly on the leak
Never operate the gun with the trigger wired
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 off the unit and trigger 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 triggering the gun.)
Serious injury or death could occur
fromhighpressurespraypenetrating
the skin.
RISK OF INJECTION
OR
SEVERE CUTTING INJURY
RISK OF
ELECTROCUTION
OR ELECTRICAL SHOCK
Serious injury or death may occur
from contact with electricity.
Do not direct spray on or into electrical
installations ofanykind! Thisincludes electrical
outlets, light bulbs, fuse boxes, transformers,
the unit itself, etc.
Donot allow metalcomponentsof the pressure
washer to come in contact with live electrical
components.

Operator's Manual 7
RISK OF BURNS Serious injury may occur from
touching the engine, mufer or heat
exchanger. Theseareascanremain
hot for some time after the pressure
washer is shutdown.
Serious injury may occur from a
pressure washer malfunction or
exploding accessories if incorrect
system components, attachments
or accessories are used.
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 the engine, mufer, or 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
formationinthepump. Donotstartthepressure
washer if it has been transported in an open
or non heated vehicle without rst allowing the
entire unit to thaw.
RISK OF BURSTING
Before making any adjustments, be certain the
engine is turned off. Be certain to disconnect
the battery ground terminal before servicing
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.
Never allow any part of your body to contact
the engine, mufer or heat exchanger.
Serious injury may occur to the
operator from moving parts on the
pressure washer.
RISK FROM MOVING PARTS
HAZARD POTENTIAL CONSEQUENCE PREVENTION
IMPORTANT SAFETY INSTRUCTIONS
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
Serious injury or death may occur if
attemptingtostartthepressurewasher
when the pump is frozen.

8 Operator's Manual
RISK OF BODILY INJURY
IMPORTANT SAFETY INSTRUCTIONS
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
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.
Injurymay occuriftheoperator loses
his balance caused by the thrust of
water traveling through the spray
nozzle.
Seek emergency medical care if you are us-
ing cleaning agents and the spray appears
to have penetrated the skin! Do not treat as
a simple cut. Be prepared to tell a physician
exactly what kind of detergents you were us-
ing by reading the Material Safety Data Sheet
(MSDS) provided with your detergent.
Never use any solvents or highly corrosive
detergents or acid type cleaners with this
pressure washer.
Protective equipment such as rubber suits,
gloves and respirators are advisable, espe-
cially when using cleaning detergents.
Keep all detergents out of the reach of
children!
Always wear protective goggles when operat-
ing the unit to shield the eyes from ying debris
and detergents.
Do not direct spray toward fragile materials
such as glass for shattering could occur.
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 and balance
at all times.
Never trigger the gun while on a ladder or
roof.
HAZARD POTENTIAL CONSEQUENCE PREVENTION

Operator's Manual 9
RISK OF BODILY INJURY
IMPORTANT SAFETY INSTRUCTIONS
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
Always hold on rmly to the gun/lance as-
sembly when starting and operating the unit.
Failure to do so can cause the lance to fall
and whip dangerously.
Know how to stop the pressure washer and
bleedpressuresquickly. Bethoroughlyfamiliar
with controls.
Follow the maintence instructions specied
in the manual.
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 leaks from the machine. Do not resume
operation untiltheunit hasbeeninspectedand
repaired by a qualied service person.
Never run the unit with the governor discon-
nected or operate at excessive speeds.
Place unit in a clean, dry, at area for servic-
ing. Before servicing the unit: turn the unit
off, relieve the water pressure from the trigger
gun, and allow the unit to cool down. Service
in clean, dry, at area. If applicable, block
wheels to prevent unit from moving.
Do not move the unit by pulling on the hose.
HAZARD POTENTIAL CONSEQUENCE PREVENTION
!SAVE THESE INSTRUCTIONS!
Injury may occur from the pressure
washer.

10 Operator's Manual
HDS FEATURES
HDS FEATURES-032905-RZ

Operator's Manual 11
HDS FEATURES LISTING
1. Decal- Data Plate
2. Gas Tank- Red / 10 Gallon
3. Decal- Caution: Risk of Fire- Do not use Diesel or Fuel Oil
4. Fuel Tank- Green / 10 Gallon
5. Decal- Caution: Risk of Fire- Do not use Gasoline
6. Decal- Warning/Caution/Operation
7. Decal- Steam Valve
8. Steam Valve
9. Detergent Valve
10. Detergent Strainer
11. Pressure Relief Valve
12. Water Outlet
13. Stainless Steel Front Panel
14. Quick Connect Nozzle Holder
15. Burner Rocker Switch
16. Adjustable Thermostat
17. Auxiliary Power Rocker Switch
18. High Pressure Pump
19. Decal- Warning: Risk of Injury- Exposed Pulleys
20. Battery Box
21. Decal- Caution: Disconnect Battery
22. GFCI Duplex Outlet
23. Roll Cage Frame Assembly
24. Burner Air Adjustment
25. Water Separator Fuel Filter
26. 3 Way Ball Valve
27. Water Inlet
28. Float Tank
29. Heat Dump Valve
30. Washer Strainer
31. Pressure Switch
32. Unloader Valve
33. Generator
34. Pump Oil Drain
35. Engine Oil Drain
36. Engine
37. Stainless Steel Control Panel
38. Engine Key Switch
39. Engine Choke
40. Decal- Electrical Panel
41. GFCI Outlet Circuit Breaker
42. Hour Meter
43. Stack Adapter Kit- See Options Below
44. Heat Exchanger Outlet
45. Decal: Warning: Hot Surfaces
46. High Pressure Hose
47. Trigger Gun
48. Trigger Safety Lock
49. Insulated Lance
50. Adjustable Pressure Dual Lance
51. High Pressure Nozzle
HDS OPTIONS LISTING
PART # DESCRIPTION
HX-0100 Steam (HDS-3005/3505)
HX-0102 Steam (HDS-3506)
AW-5740-0000 Wheel Kit
50-0170 Stack Adapter
33-0356 Stack Adapter Gasket

12 Operator's Manual
SET-UP:
1. This unit should only be placed on a level surface to ensure proper lubrication
for the engine and water pump while operating. 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, gas or fuel leaks.
c. where ammable gas vapors may be present.
This unit has multiple ignition sources that could cause an explosion or
re.
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 resulting in possible serious injury to
the operator or bystanders.
5. Pump oil level should be checked before each use. Check the oil level
indicator on the pump crankcase. Make certain the oil is in the center of
the oil sight glass. If the level appears to be low, ll with SAE20 or 30 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.
7. Battery Specications:
- Lawn Tractor Battery.
- 175 CCA
- Battery Box Size: 8 1/2" L x 6" W x 6 1/4" H (Battery can be slightly taller
and still be covered by lid.)
- Battery should have lifting strap for easy installation.
ATTIRE:
Proper attire is essential to your safety. It is advised to utilize whatever
means necessary to protect eyes, ears, and skin. Additional safety attire
(such as respiratory mask) may be required when using detergent cleaning
agents with this washer.
DANGER
RISK OF EXPLOSION OR FIRE!
-WHEN CHARGING BATTERIES,
THEY GENERATE A HIGHLY
EXPLOSIVE HYDROGEN GAS.
A SPARK COULD CAUSE AN
EXPLOSION OR FIRE!
-DO NOT JUMP START BATTERY
UNLESS BOTH BATTERIES ARE
OF EQUAL VOLTS & AMPS.
-DO NOT SMOKE OR ALLOW
SPARKS OR FLAMES NEAR THE
BATTERY.
-DO NOT PLACE UNIT IN AN
AREA WHERE FLAMMABLE
GASVAPORSMAYBEPRESENT.
A SPARK COULD CAUSE AN
EXPLOSION OR FIRE.
RISK OF UNIT BURSTING!
DO NOT STORE/OPERATE UNIT
IN FREEZING ENVIRONMENTS!
WARNING
RISK OF ASPHYXIATION!
USE THIS PRODUCT ONLY IN
WELL VENTILATED AREAS!
DO NOT OPERATE IN AN
ENCLOSED AREA. THE
EXHAUST CONTAINS CARBON
MONOXIDE, A POISONOUS,
ODORLESS AND INVISIBLE
GAS. BREATHING THIS GAS
CAN CAUSE SERIOUS INJURY,
ILLNESS & POSSIBLE DEATH.
INSTALLATION & PREPARATION

Operator's Manual 13
WARNING
RISK OF EXPLOSION OR FIRE!
ALWAYS STORE FUEL AWAY
FROM THE WASHER WHILE THE
UNIT IS RUNNING OR HOT.
ENGINE/BURNER FUEL TANKS:
1. Review "Risk of Explosion or Fire" warnings, pgs. 4-5, before fueling.
2. Locate the Safety Decals on your unit and heed their warnings.
3. Gasoline Engines: See Engine Owner's Manual for gasoline
requirements.
Burner Fuel: When lling tank, use No. 1 or No 2 fuel oil/diesel or
kerosene.
4. Check the engine oil level before starting the engine. (See Engine
Manual.)
5. RefertotheEngineManualsuppliedwiththisunitforproperengineadjustment
procedures.
6. Review the Engine Manual accompanying this pressure washer for
correct engine start-up and maintenance procedures.
DANGER
RISK OF FIRE!
-D O NO T SM OK E WH IL E
FUELING!
-DO NOT FILL THE FUEL TANKS
WHILE UNIT IS RUNNING OR
HOT. ALLOW UNIT TO COOL
FOR TWO MINUTES BEFORE
REFUELING.
-DO NOT FILL FUEL TANKS TO
POINT OF OVERFLOWING.
ALLOW APPROXIMATELY 1/4"
OF TANK SPACE FOR FUEL
EXPANSION.
INSTALLATION & PREPARATION
DUAL LANCE ASSEMBLY WITH ADJUSTABLE PRESSURE:
Thisunitfeaturesa duallanceassemblywithadjustablepressurewhichallows
the user to select a high or low pressure spray. Simply rotate the adjustable
grip on the dual lance to achieve the desired pressure selection.
1. Selection of high pressure can be achieved by turning the adjustable
grip on the Dual Lance assembly counterclockwise.
2. Selection of low pressure can be achieved by turning the adjustable grip
on the Dual Lance clockwise.
WARNING
RISK OF INJECTION CAUSING
SEVERE INJURY!
-THE TRIGGER GUN SHOULD
ALWAYSBELOCKEDINTHEOFF
POSITION WHEN NOT IN USE!
-NEVER LOOK DIRECTLY AT
THE NOZZLE UNLESS IT IS
DISCONNECTED FROM THE
TRIGGER GUN/DUAL LANCE
ASSEMBLY!

14 Operator's Manual
INSTALLATION & PREPARATION
NOZZLES
NOZZLE LOCK QUICK-CONNECT NOZZLES:
Various nozzles may be quick-connected into the end of the dual lance to change
the spray pattern. The detergent nozzle has been pre-installed at the factory.
When using quick-connects (Q.C.), be certain the connection is securely locked
as shown at right. If not, the high pressure water may shoot the nozzle from
the lance, causing severe injury or serious damage. To determine spray fan,
refer to the actual number stamped on the nozzle. The rst two digits indicate
the spray fan degree: 00=0°, 15=15°, 25=25°, 40=40°, 65=65°.
1. The 0° nozzle (RED):
This is a blasting nozzle. It delivers a very concentrated stream of water. Be
cautious when using the straight narrow stream. It is not recommended for
use on painted or wood surfaces or items attached with adhesive backing.
Uses: Removing weeds from sidewalk cracks, stubborn stains from concrete,
masonry, aluminum and steel, caked mud from equipment, and cleaning
lawn mower undersides.
2. The 15° nozzle (YELLOW):
This is a chiseling nozzle. The spray should be directed at a 45° angle to
the surface and used like a scraper to remove paint, grease and dirt. Uses:
Surface preparation (removing mildew stains and paint chips).
3. The 40° nozzle (WHITE):
This is a wash nozzle. This wide spray pattern disperses the water pressure
overalarge areaandis recommendedformoderatewashing. Uses:Washing
aluminum siding, cleaning windows, washing vehicles, spraying sidewalks,
driveways, and patios.
4. The 25° nozzle (GREEN):
a. On standard units, this nozzle is used for 250°F Wet Steam
operation. This nozzle is sized for operation with the unloader
and steam valve (where applicable) to provide high pressure
wet steam. Replacement of this nozzle with an improperly sized
nozzle may cause perational problems with the machine.
b. On units equipped with the 300°F Steam Option, this nozzle is
replaced with a steam nozzle assembly.
5. The 65° nozzle: (included in dual lance.)
This is a detergent nozzle. The broad spray pattern distributes solution
over vast areas. Uses: Detergent application, misting or rinsing.
NOZZLE CONNECTION:
1. Ensure the trigger gun is locked in the OFF position.
2. Quick-connect nozzles can be connected or disconnected from the dual
lance assembly by retracting the locking ring on the quick-connect tting.
When connecting the desired nozzle, push the locking ring over the quick
connect nozzle to secure connection.
NOZZLE CONNECTION

Operator's Manual 15
WATER SUPPLY:
Pressurized Supply:
1. Select a water supply hose which is a quality grade of garden hose
measuring at least ¾” ID and no longer than 50 feet.
2. Ensure the water strainer is clean and free of obstructions. Check oat
tank for any foreign objects or debris. If water ow becomes restricted
to the pump, cavitation can occur which will cause premature failure of
the pump packings.
3. Connect one end of the water supply hose to the oat tank inlet and
connect the other end to the pressurized water supply.
NOTE: If there is a high mineral content in your water, it is recommended
that a water softener be used to prevent the possibility of excessive scale
buildup inside the heat exchanger coil.
4. Follow the incoming water requirements listed below:
a. Water pressure must be between a minimum of 40 PSI
and a maximum of 65 PSI.
b. Incoming GPM must be approximately one gallon more
per minute than the outgoing GPM stated on the
machine nameplate. (You can check the GPM of your
source by timing the lling of a 5 gallon container.)
c. Incoming water temperature must not exceed 125°F.
Excessive pump damage may result if the water
temperature exceeds this level.
5. Never allow the unit to operate without the incoming water line attached
and the water supply completely turned on.
Non-pressurized Supply (Auxiliary Tank):
1. Connect hose from auxiliary tank to open port on the 3-way ball valve.
2. Use the selector lever on the ball valve to allow water to ow from the
auxiliary tank to the pump.
3. The water level in the auxiliary tank must always be higher than the pump
inlet. This will ensure gravity feed of water to the pump. Failure to keep
the water level above the pump inlet will result in the pump running dry
and damage to the wet end of the pump.
INSTALLATION & PREPARATION

16 Operator's Manual
INSTALLATION & PREPARATION
UNLOADER:
The unloader has been preset at the factory and should only be adjusted by a
trained Service Representative.
GENERATOR AND GFCI OUTLET:
This unit is equipped with a 115 Volt AC generator and a 115 Volt 15 Amp GFCI
outlet. The generator provides power to the burner, GFCI outlet, and the control
and safety circuits of the machine.
Generator:
1. Always ensure the burner and auxiliary switches are in the OFF position
before starting the engine. Allow the engine to reach full RPM before turning
the burner and/or auxiliary switch(es) to the ON position. Failure to do so
can damage the generator, burner, or auxiliary equipment.
2. Do not spray water at or around generator. Electrocution and/or damage
to the generator, burner, and any auxiliary equipment may result.
GFCI Outlet:
1. Always plug in auxiliary equipment after the machine has been started and
the engine is at full RPM.
2. Always turn off auxiliary equipment and unplug the auxiliary equipment from
the GFCI outlet before shutting down the machine. Failure to do so may
cause damage to the generator, burner, and auxiliary equipment.
3. Do not spray water at or around GFCI outlet. Electrocution and/or damage
to the GFCI outlet, generator, burner, and auxiliary equipment may result.
PRE-START INSPECTION PROCEDURES:
Before starting the unit, perform the following procedures:
1. Check the oil level in the pump.
2. Inspect the water inlet strainer. Clean or replace if necessary. See "Water
Supply" pg. 15.
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 UNIT! See "Risk of Explosion or Fire" warnings, pgs.
4-5. Be sure that all damaged parts are replaced and that the mechanical
problems are corrected prior to operation of the unit. If you require service,
contact Customer Service.
5. Inspect high pressure hoses for kinking, cuts and leaks. If a cut or leak is
found, DO NOT USE HOSE! Replace hose before starting unit. See "Risk
of Injection" warnings, pg. 6. Be sure that all damaged parts are replaced
and that the mechanical problems are corrected prior to operation of the
unit. If you require service, contact Customer Service.
END OF PREPARATION INSTRUCTIONS
UNLOADER VALVE

Operator's Manual 17
WARNING
THE FOLLOWING PAGES CONTAIN OPERATINGAND MAINTENANCE
INSTRUCTIONS.
DO NOT ATTEMPT TO OPERATE THIS PRESSURE WASHER UNTIL
YOU HAVE READ AND UNDERSTOOD ALL SAFETY PRECAUTIONS
AND INSTRUCTIONS LISTED IN THIS MANUAL.
INCORRECT OPERATION OF THIS UNIT CAN CAUSE SERIOUS
INJURY!!
DO NOT ALTER OR MODIFY THIS EQUIPMENT IN ANY MANNER!

18 Operator's Manual
OPERATING INSTRUCTIONS
FLUSHING THE SYSTEM:
This unit has a steel coil which, after setting, will cause the water remaining in
the coil from the previous usage to turn brown or black. This water must be
ushed from the system before start-up. This procedure should be performed
WITHOUT the high pressure hose, gun and lance assembly installed.
1. Turn on the water supply.
2. Startthe engine following the start-upprocedures given in the Engine Manual
accompanying this unit.
3. Adjust the engine to a low speed until you see water exiting the water
outlet. (This may take 3-5 minutes.) Adjust the engine throttle back to full
RPM.
4. Once the system is ushed, stop the engine and connect the high pressure
discharge hose to the water outlet of the unit.
5. Connect the trigger gun/dual lance assembly to the high pressure discharge
hose. Connect the desired nozzle to the dual lance assembly.
START-UP/COLD WATER OPERATION:
1. Refer to the Safety Warnings on pages 4-8 before starting the machine.
2. Locate the Safety Decals on your unit and heed their warnings.
3. Ensure the Burner Switch and Auxiliary Switch is in the OFF position.
4. Pointing the trigger gun in a safe direction, unlock the trigger gun and squeeze
the trigger. Hold the trigger gun open while starting the engine according
to the manufacturer’s instructions in the engine manual accompanying
the machine. Brace yourself for possible gun kickback when the engine
starts.
5. Once the engine has started, perform the following procedures with the gun
open:
a. Inspect for system water leaks, oil leaks, and fuel leaks. If
a fuel leak is found, TURN MACHINE OFF IMMEDIATELY!
See “Risk of Explosion or Fire” warnings. Be sure that all
damaged parts are replaced and that all mechanical
problems have been corrected prior to operation of the
unit. Contact Customer Service if necessary.
b. Inspect high pressure hoses for kinks, cuts, and leaks. If a
cut or leak is found, TURN MACHINE OFF IMMEDIATELY!
Replace hose before starting the machine. See “Risk of
Injection” warnings. Be sure that all damaged parts are
replaced and that all mechanical problems have been
corrected prior to operation of the unit. Contact Customer
Service if necessary.
6. The unit is now operating as a cold water pressure washer. Trigger the gun
several times. Rotate adjustable grip on the dual lance for high and low
pressure application. NEVER place hand or ngers in front of the nozzle
or look directly into the nozzle!
7. If use of the auxiliary outlet is desired, plug in auxiliary equipment and move
auxiliary switch to the ON position.
8. Do not allow the machine to operate in the bypass mode (with the trigger gun
closed) for more than three minutes without triggering the gun. Failure to
follow this simple rule can cause premature failure of the pump packings.
DANGER
RISK OF INJECTION CAUSING
SEVERE INJURY!
-KEEPCLEAROFNOZZLE!NEVER
PLACE HAND OR FINGERS IN
FRONT OF NOZZLE!
-DO NOT DIRECT DISCHARGE
STREAM AT PEOPLE OR PETS!
ADJUSTABLE GRIP
CAUTION
RISK OF DAMAGE.
DONOTALLOWSPRAYPATTERN
TO REMAIN ON A FIXED AREA
FOR AN EXTENDED PERIOD OF
TIME. POSSIBLE DAMAGE MAY
OCCUR TO THE AREA.
CAUTION
RISK OF UNIT DAMAGE.
BE CERTAIN THE HOSE, GUN
AND NOZZLE ASSEMBLY ARE
NOT CONNECTED TO THE
UNIT WHILE FLUSHING THE
SYSTEM. FLUSHING ALLOWS
MINERAL DEPOSITS TO BE
RELEASED FROM THE SYSTEM
WHICH WOULD OBSTRUCT
OR DAMAGE THE GUN AND
NOZZLEASSEMBLYRESULTING
IN COSTLY REPAIRS.

Operator's Manual 19
HOT WATER OPERATION:
1. Follow preceding steps 1-7 for “Start-up / Cold water operation”.
2. Move the Burner switchto the ONposition andtrunthe adjustable thermostat
to the desired setting.
3. Recheck the system for fuel leaks. If a fuel leak is found, TURN MACHINE
OFF IMMEDIATELY! See “Risk of Explosion or Fire” warnings. Be sure
that all damaged parts are replaced and that all mechanical problems have
been corrected prior to operation of the unit. Contact Customer Service if
necessary.
NOTE: Upon initial start-up, water will begin turning hot in approximately 20
seconds and will reach maximum temperature within 2-1/2 minutes providing
that the trigger gun remains open. The burner will not re when the trigger
is released.
STEAM OPERATION:
Standard Units:
On standard units, the 25° (GREEN) steam nozzle is used for 250°F Wet Steam
operation. This nozzle is sized for operation with the unloader and steam valve
(where applicable) to provide high pressure wet steam. Replacement of this
nozzle with an improperly sized nozzle may cause operational problems with
the machine.
Standard Units - HDS-3005/3505/3506:
1. Install 25° (GREEN) steam nozzle into dual lance assembly.
2. Follow "Hot Water Operation" start-up procedures.
3. Turn steam valve completely counterclockwise to achieve maximum outlet
temperature (250°F).
Standard Units - HDS-4005 (and units with HX-0150, HX-0151 and HX-0152
options):
1. Install 25° (GREEN) steam nozzle into dual lance assembly.
2. Follow "Hot Water Operation" start-up procedures.
NOTE: Upon initial start-up, water will begin turning hot in approximately 20
seconds and will reach maximum temperature within 2-1/2 minutes providing
that the trigger gun remains open. The burner will not re when the trigger
is released.
STEAM OPTION
Steam Option - 300°F OUTLET TEMPERATURE:
1. Remove the high pressure hose and replace it with the steam hose. Install
steam nozzle assembly into dual lance.
2. Gently turn unloader knob counterclockwise to minimum factory setting.
3. Follow “Hot Water Operation” start-up procedures.
4. Move Steam switch to the ON position.
5. Turn adjustable thermostat clockwise to the maximum setting. If a lower
setting is desired, it is normal for the burner to cycle (re intermittently) while
spraying.
NOTE: Upon initial start-up, water will begin turning hot in approximately 20
seconds and will reach maximum temperature within 5 minutes providing
that the trigger gun remains open. The burner will not re when the trigger
is released.
NOTE: The burner will not re if the Steam switch is moved to the ON position
before the unloader has been adjusted to the minimum factory setting.
OPERATING INSTRUCTIONS
WARNING
RISK OF BURN!
THE WATER TEMPERATURE
COULD BECOME VERY
HOT DURING HOT WATER
OPERATION. BE CAUTIOUS
WHENADJUSTINGPRESSURE
OR CONTROLLING THE
T R I G G E R G U N / L A N C E
ASSEMBLY.

20 Operator's Manual
CLEANING WITH DETERGENTS-HIGH PRESSURE (COLD/HOT/STEAM):
NOTE: This feature is designed for use with mild detergents only. Since the
cleaning solution travels through the pump and heat exchanger coil,
do not use corrosives as they will cause extensive damage as well as
pose a considerable safety hazard.
1. Refer to "Risk of Bodily Injury" warnings, pg. 8. Be certain to wear protective
safety attire as stated on pg. 9.
2. Prepare detergent solution according to label directions.
3. Fully immerse the strainer end of the clear vinyl detergent hose into the
detergent solution.
4. Adjust the amount of detergent desired by turning the detergent metering
valve completely counterclockwise to set at maximum siphon rate.
5. To apply solution: unlock the trigger gun and squeeze the trigger. In 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 to soak
briey. Avoid working on hot surfaces or in direct sunlight to minimize the
chances of the detergent drying, which may result in damaging surfaces.
Be certain to apply cleaning solution to a small section at a time.
6. To rinse: lock the trigger gun in the OFF position. Turn the detergent
metering valve to the OFF position. Unlock the trigger gun 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.
7. Siphon a gallon of water through the detergent injection system after each
use. This prevents the possibility of corrosion or detergent residue causing
mechanical problems during the next use.
SHUTDOWN:
1. Move the Burner switch, Auxiliary switch, and Steam switch (where applicable)
to the OFF position.
2. Squeeze the trigger and discharge the water for a period of 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 trigger the gun momentarily to relieve trapped
pressure.
Disconnect and drain the high pressure hose, gun, and lance. Wipe the unit
clean. Store in a non-freezing environment
OPERATING INSTRUCTIONS
DETERGENT METERING VALVE