Graco DutyMax DH230 HD Guide

334606J
EN
Operation, Parts
DutyMax EH/GH™230/300, DH230 HD
Hydraulic Sprayers
For professional use only.
Not approved for use in explosive atmosphere or hazardous locations.
For portable airless spraying of architectural paints and coatings.
3300 psi (22.8 MPa, 228 bar) Maximum Working Pressure
See page 3 for model information, including maximum working pressure and approvals.
Important Safety Instructions
Read all warnings and instructions in this manual and in related manuals.
Be familiar with the controls and the proper usage of the equipment.
Save these instructions.
Related Manuals:
308491 DutyMax DH/GH230 Gun 334654 Pump
309495 DutyMax GH300 Gun 310812 Electric Motor
Use only genuine Graco replacement parts.
The use of non-Graco replacement parts may void warranty.
Standard Series ProContractor Series
ti25305a
ti25306a

2 334606J
Table of Contents
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electric Motor Kit Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
OEM Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electric Motor Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Internal Combustion Engine Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Electric Motor/Internal Combustion Engine Warnings . . . . . . . . . . . . . . . . . . . . . . .8
Component Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Standard Models (EH/GH230, 300 HD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
ProContractor Models (EH/GH230, 300 HD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
ProContractor Model (DH230 HD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Grounding Procedure for Gas Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Grounding Procedure for Electric Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Grounding of Pails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Change Engine or Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Complete Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Startup (Internal Combustion Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Startup (Electric Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
How to Spray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Switch Tip™ and Guard Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Spray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Clear Tip Clogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Hose Reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Clean Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Standard Series Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
ProContractor Series Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
DutyMax EH/GH230/300 HD Standard Series Parts . . . . . . . . . . . . . . . . . 37
DutyMax DH230/EH/GH230/300 HD ProContractor Series . . . . . . . . . . . . 49
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
DutyMax EH230 HD Standard Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
DutyMax EH300 HD Standard Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
DutyMax GH230 HD Standard Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
DutyMax GH300 HD Standard Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
DutyMax EH230 HD ProContractor Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
DutyMax EH300 HD ProContractor Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
DutyMax DH230/GH230 HD ProContractor Series . . . . . . . . . . . . . . . . . . . . . . . .70
DutyMax GH300 HD ProContractor Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Models
334606J 3
Models
Electric Motor Kit Options
*Performance is limited when using electric motor vs. internal combustion engine
OEM Kits
DutyMax EH230 HD
Model: Standard ProContractor
24W941 ✓
24W942 ✓
DutyMax DH230 HD
Model: Standard ProContractor
17G592 ✓
DutyMax GH230 HD
Model: Standard ProContractor 120V Motor Kit 120V ETL/CSA/UL
Motor Kit
24W943 ✓
24W944 ✓ ✓
24W945 ✓ ✓
24W962 ✓
24W963 ✓ ✓
24W964 ✓ ✓
DutyMax EH300 HD
Model: Standard ProContractor
24W965 ✓
24W966 ✓
DutyMax GH300 HD
Model: Standard ProContractor
24W967 ✓
25P353 ✓
24W968 ✓
25P352 ✓
24W967V ✓
24W968V ✓
Kit Number Sprayer Model Description
248950 DH230/GH230/GH300* 120VAC, 60Hz, 20A, ETL/CSA/UL Approved
248949 DH230/GH230/GH300* 120 VAC, 60Hz, 15A
24M668 DH230/GH230/GH300* 240VAC, 50Hz, 13.4A
24M669 GH300 400VAC, 50Hz, 11.0A
Kit Number OEM Model Description
24W299 GH230/300 OEM 3300 psi (22.8 MPa, 228 bar) Maximum Working Pressure (psi)

Warnings
4 334606J
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this
equipment. The exclamation point symbol alerts you to a general warning and the hazard
symbols refer to procedure-specific risks. When these symbols appear in the body of this
manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols
and warnings not covered in this section may appear throughout the body of this manual where
applicable.
Electric Motor Warnings
HIGH VOLTAGE ELECTRIC SHOCK HAZARD
This equipment uses high voltage power. Improper contact with high voltage
equipment will cause death or serious injury.
•Turn off and disconnect power cord before servicing equipment.
•This equipment must be grounded. Connect only to grounded power source.
•Use only 3-wire extension cords for 240V and single phase models.
•Use only 5-wire extension cords for 400 AC and three phase models.
•Ensure ground prongs are intact on power and extension cords.
•Do not expose to rain. Store indoors.

Warnings
334606J 5
GROUNDING
This product must be grounded. In the event of an electrical short circuit, grounding
reduces the risk of electric shock by providing an escape wire for the electric current.
This product is equipped with a cord having a grounding wire with an appropriate
grounding plug. The plug must be plugged into an outlet that is properly installed and
grounded in accordance with all local codes and ordinances.
•Improper installation of the grounding plug is able to result in a risk of electric
shock.
•When repair or replacement of the cord or plug is required, do not connect the
grounding wire to either flat blade terminal.
•The wire with insulation having an outer surface that is green with or without
yellow stripes is the grounding wire.
•Check with a qualified electrician or serviceman when the grounding instructions
are not completely understood, or when in doubt as to whether the product is
properly grounded.
•Do not modify the plug provided; if it does not fit the outlet, have the proper outlet
installed by a qualified electrician.
•This product is for use on a nominal 120V or 230V circuit and has a grounding
plug similar to the plugs illustrated in the figure below.
•Only connect the product to an outlet having the same configuration as the plug.
•Do not use an adapter with this product.
Extension Cords:
•Use only a 3-wire extension cord that has a grounding plug and a grounding
receptacle that accepts the plug on the product.
•Make sure your extension cord is not damaged. If an extension cord is
necessary, use 12 AWG (2.5 mm2) minimum to carry the current that the product
draws.
•An undersized cord results in a drop in line voltage and loss of power and
overheating.
120V US 230V

Warnings
6 334606J
Electric Motor Warnings
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or
explode. To help prevent fire and explosion:
•Do not spray flammable or combustible materials near an open flame or sources
of ignition such as cigarettes, motors, and electrical equipment.
•Paint or solvent flowing through the equipment is able to result in static electricity.
Static electricity creates a risk of fire or explosion in the presence of paint or
solvent fumes. All parts of the spray system, including the pump, hose assembly,
spray gun, and objects in and around the spray area shall be properly grounded
to protect against static discharge and sparks. Use Graco conductive or
grounded high-pressure airless paint sprayer hoses.
•Verify that all containers and collection systems are grounded to prevent static
discharge. Do not use pail liners unless they are anti static or conductive.
•Connect to a grounded outlet and use grounded extensions cords. Do not use
a 3-to-2 adapter.
•Do not use a paint or a solvent containing halogenated hydrocarbons.
•Do not spray flammable or combustible liquids in a confined area.
•Keep spray area well-ventilated. Keep a good supply of fresh air moving through
the area.
•Sprayer generates sparks. Keep pump assembly in a well ventilated area at least
20 feet (6.1 m) from the spray area when spraying, flushing, cleaning, or
servicing. Do not spray pump assembly.
•Do not smoke in the spray area or spray where sparks or flame is present.
•Do not operate light switches, engines, or similar spark producing products in the
spray area.
•Keep area clean and free of paint or solvent containers, rags, and other
flammable materials.
•Know the contents of the paints and solvents being sprayed. Read all Safety
Data Sheets (SDS) and container labels provided with the paints and solvents.
Follow the paint and solvents manufacturer’s safety instructions.
•Fire extinguisher equipment shall be present and working.

Warnings
334606J 7
Internal Combustion Engine Warnings
I
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or
explode. To help prevent fire and explosion:
•Use equipment only in well ventilated area.
•Do not fill fuel tank while engine is running or hot; shut off engine and let it cool.
Fuel is flammable and can ignite or explode if spilled on hot surface.
•Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric
lamps, and plastic drop cloths (potential static arc).
•Keep work area free of debris, including solvent, rags and fuel.
•Do not plug or unplug power cords, or turn power or light switches on or off when
flammable fumes are present.
•Ground all equipment in the work area. See Grounding instructions.
•Use only grounded hoses.
•Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail
liners unless they are anti static or conductive.
•Stop operation immediately if static sparking occurs or you feel a shock. Do
not use equipment until you identify and correct the problem.
•Keep a working fire extinguisher in the work area.
CARBON MONOXIDE HAZARD
Exhaust contains poisonous carbon monoxide, which is colorless and odorless.
Breathing carbon monoxide can cause death.
•Do not operate in an enclosed area.
BURN HAZARD
Equipment surfaces and fluid that is heated can become very hot during operation.
To avoid severe burns:
•Do not touch hot fluid or equipment.

Warnings
8 334606J
Electric Motor/Internal Combustion Engine Warnings
SKIN INJECTION HAZARD
High-pressure spray is able to inject toxins into the body and cause serious bodily
injury. In the event that injection occurs, get immediate surgical treatment.
•Do not aim the gun at, or spray any person or animal.
•Keep hands and other body parts away from the discharge. For example, do not
try to stop leaks with any part of the body.
•Always use the nozzle tip guard. Do not spray without nozzle tip guard in place.
•Use Graco nozzle tips.
•Use caution when cleaning and changing nozzle tips. In the case where the
nozzle tip clogs while spraying, follow the Pressure Relief Procedure for
turning off the unit and relieving the pressure before removing the nozzle tip to
clean.
•Equipment maintains pressure after power is shut off. Do not leave the
equipment energized or under pressure while unattended. Follow the Pressure
Relief Procedure when the equipment is unattended or not in use, and before
servicing, cleaning, or removing parts.
•Check hoses and parts for signs of damage. Replace any damaged hoses or
parts.
•This system is capable of producing 3300 psi (22.8 MPa, 228 bar). Use Graco
replacement parts or accessories that are rated a minimum of 3300 psi (22.8
MPa, 228 bar).
•Always engage the trigger lock when not spraying. Verify the trigger lock is
functioning properly.
•Verify that all connections are secure before operating the unit.
•Know how to stop the unit and bleed pressure quickly. Be thoroughly familiar
with the controls.

Warnings
334606J 9
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
•Always wear appropriate gloves, eye protection, and a respirator or mask when
painting.
•Do not operate or spray near children. Keep children away from equipment at
all times.
•Do not overreach or stand on an unstable support. Keep effective footing and
balance at all times.
•Stay alert and watch what you are doing.
•Do not operate the unit when fatigued or under the influence of drugs or alcohol.
•Do not kink or over-bend the hose.
•Do not expose the hose to temperatures or to pressures in excess of those
specified by Graco.
•Do not use the hose as a strength member to pull or lift the equipment.
•Do not spray with a hose shorter than 25 feet.
•Do not alter or modify equipment. Alterations or modifications may void agency
approvals and create safety hazards.
•Make sure all equipment is rated and approved for the environment in which you
are using it.
PRESSURIZED ALUMINUM PARTS HAZARD
Use of fluids that are incompatible with aluminum in pressurized equipment can
cause serious chemical reaction and equipment rupture. Failure to follow this
warning can result in death, serious injury, or property damage.
•Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated
hydrocarbon solvents or fluids containing such solvents.
•Do not use chlorine bleach.
•Many other fluids may contain chemicals that can react with aluminum. Contact
your material supplier for compatibility.
MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.
•Keep clear of moving parts.
•Do not operate equipment with protective guards or covers removed.
•Pressurized equipment can start without warning. Before checking, moving, or
servicing equipment, follow the Pressure Relief Procedure and disconnect all
power sources.

Warnings
10 334606J
ENTANGLEMENT HAZARD
Rotating parts can cause serious injury.
•Keep clear of moving parts.
•Do not operate equipment with protective guards or covers removed.
•Do not wear loose clothing, jewelry or long hair while operating equipment.
•Equipment can start without warning. Before checking, moving, or servicing
equipment, follow the Pressure Relief Procedure and disconnect all power
sources.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on
skin, inhaled, or swallowed.
•Read SDSs to know the specific hazards of the fluids you are using.
•Store hazardous fluid in approved containers, and dispose of it according to
applicable guidelines.
RECOIL HAZARD
Gun may recoil when triggered. If you are not standing securely, you could fall and
be seriously injured.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent
serious injury, including eye injury, hearing loss, inhalation of toxic fumes, and
burns. Protective equipment includes but is not limited to:
•Protective eyewear, and hearing protection.
•Respirators, protective clothing, and gloves as recommended by the fluid and
solvent manufacturer.
CALIFORNIA PROPOSITION 65
The engine exhaust from this product contains a chemical known to the State of
California to cause cancer, birth defects or other reproductive harm.
This product contains a chemical known to the State of California to cause cancer,
birth defects or other reproductive harm. Wash hands after handling.

Component Identification
334606J 11
Component Identification
Standard Models (EH/GH230, 300 HD)
1 Pressure Gauge
2 Pressure Control
3 Hydraulic Pump Valve
4 Threaded Pump Connection
5 Displacement Pump
6 Inlet Strainer
7 Engine On/Off Switch
8 Engine Controls
9 Electric Motor On/Off Switch
10 Gun Trigger Lock
11 Grounding Clamp
12 Serial Number Tag
13 Prime/Drain Valve
14 Hydraulic Oil Cap / Dipstick
15 Hydraulic Oil Filter
16 Paint Filter

Component Identification
12 334606J
ProContractor Models (EH/GH230, 300 HD)
1 Pressure Gauge
2 Pressure Control
3 Hydraulic Pump Valve
4 ProConnect
5 Displacement Pump
6 Inlet Strainer
7 Engine On/Off Switch
8 Engine Controls
9 Electric Motor On/Off Switch
10 Gun Trigger Lock
11 Grounding Clamp
12 Serial Number Tag
13 Prime/Drain Valve
14 Hydraulic Oil Cap / Dipstick
15 Hose Reel Lock
16 Hose Reel Handle
17 Hydraulic Oil Filter
18 Paint Filter

Component Identification
334606J 13
ProContractor Model (DH230 HD)
3.
2.
12.
on
off
bar/MPa
PSI
4.
1.
13.
10.
5.
6.
11.
14.15.
8.
16.
18.
OFF
50%
100%
17.
ti28387a
1 Pressure Gauge
2 Pressure Control
3 Hydraulic Pump Valve
4 ProConnect
5 Displacement Pump
6 Inlet Strainer
8 Engine Controls
10 Gun Trigger Lock
11 Grounding Clamp
12 Serial Number Tag
13 Prime/Drain Valve
14 Hydraulic Oil Cap / Dipstick
15 Hose Reel Lock
16 Hose Reel Handle
17 Hydraulic Oil Filter
18 Paint Filter

Grounding
14 334606J
Grounding
Grounding Procedure for
Gas Engine
To ground sprayer: Attach sprayer
grounding clamp to earth ground.
Air and fluid hoses: Use only electrically
conductive hoses with a maximum of 500ft.
(150 m) combined hose length to ensure
grounding continuity. Check electrical
resistance of hoses. If total resistance to
ground exceeds 29 megaohms, replace hose
immediately.
Spray gun: Ground through connection to a
properly grounded fluid hose and pump.
Grounding Procedure for
Electric Motor
The sprayer cord includes a grounding wire
with an appropriate grounding contact.
If using the electric motor, plug must be
plugged into an actual outlet that is properly
installed and grounded in accordance with all
local codes and ordinances.
Do not modify the plug provided; if it does not
fit the outlet, have the proper outlet installed
by a qualified electrician.
Power Requirements
•110-120V units require 100-120 VAC,
50/60 Hz, 15A, 1 phase.
•230V units require 230 VAC, 50/60 Hz,
16A, 1 phase
•380-400V units require 400 VAC, 50 Hz,
16A, 3 phase, 3P+N+E, 6H power
connection
•To operate the EH300DI (24W965)
sprayer, the generator needs to be sized
for 15 kW output (minimum).
The equipment must be grounded to
reduce the risk of static sparking. Static
sparking can cause fumes to ignite or
explode. Grounding provides an escape
wire for the electric current.
ti18197a
HIGH VOLTAGE ELECTRIC SHOCK
HAZARD
This equipment uses high voltage power.
Improper contact with high voltage
equipment will cause death or serious
injury.
•Turn off and disconnect power cord
before servicing equipment.
•This equipment must be grounded.
Connect only to grounded power
source.
•Use only 3-wire extension cords for
240V and single phase models
•Use only 5-wire extension cords for
400 AC and three phase models.
•Ensure ground prongs are intact on
power and extension cords.
•Do not expose to rain. Store indoors.
•All electrical wiring must be done by a
qualified electrician and comply with
all local codes and regulations.

Grounding
334606J 15
Extension Cords
Use an extension cord with an undamaged
ground contact. If an extension cord is
necessary, use a 3-wire, 12 AWG (2.5 mm²)
minimum.
NOTE: Smaller gauge or longer extension
cords may reduce sprayer performance.
Grounding of Pails
Solvent pails used when flushing: Follow
local code. Use only conductive metal pails,
placed on a grounded surface. Do not place
the pail on a non-conductive surface, such as
paper or cardboard, which interrupts
grounding continuity.
Always ground a metal pail: connect a
ground wire to the pail. Clamp one end to the
pail and the other end to a true earth ground
such as a water pipe.
To maintain ground continuity when
sprayer is flushed or pressure is relieved:
hold metal part of spray gun firmly to the side
of a grounded metal pail then trigger the gun.
Circuit Protection
Connect sprayers only to circuits which have
the properly sized circuit breaker and/or
fuses (for unit power requirements see
Technical Data, pages 60-63).
ti25360a
ti24585a

Setup
16 334606J
Setup
Change Engine or Motor
1 Turn motor OFF and unplug or turn
engine to the OFF/STOP position.
Loosen belt guard knob and motor
clamp. Perform Pressure Relief
Procedure, page 15.
2 Lift belt guard. Remove belt. Tilt
engine/motor and remove
engine/motor.
3 Tilt engine/motor. Install engine/motor.
Install belt. Lower belt guard.
4 Swivel motor clamp. Tighten motor
clamp and belt guard knob.
ti18192a
ti18193a
ti5387a
ti5389a

Setup
334606J 17
Complete Setup
1. All sprayers except ProContractor:
Connect appropriate Graco
high-pressure hose to sprayer.
2. Install hose to spray gun and tighten
securely.
3. Engage gun trigger lock.
4. Remove Tip Guard.
5. Standard Series: Screw inlet strainer to
bottom of suction hose and hand tighten
securely.
6. When spraying texture, remove inlet
strainer and filter bowl screen.
7. Fill throat packing nut with TSL to
prevent premature packing wear. Do this
each time you spray.
8. Check engine oil level.
GASOLINE ENGINE
WLD
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ti22700a
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$SSUR[LPDWH
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Setup
18 334606J
DIESEL ENGINE
9. Fill fuel tank.
GASOLINE ENGINE
DIESEL ENGINE
10. Check hydraulic oil level. See page 29
for hydraulic oil specifications. Add
hydraulic oil as needed until the level is
between the MIN and MAX (Safe Range
when cold). Hydraulic tank capacity is
five quarts (4.75 liters).
11. Attach sprayer grounding clamp to earth
ground.
ti28389a
ti5242a
ti28388a
Safe Range (cold)
ti5243a
ti18197a

Setup
334606J 19
Pressure Relief Procedure
Follow the Pressure Relief
Procedure whenever you see this
symbol.
1. Engage trigger lock.
2. Turn sprayer OFF:
•Turn gas engine or electric motor
ON/OFF switch to OFF. For Van-
guard models turn fuel level to OFF
position.
OR
•Move Diesel throttle lever to STOP.
OR
•Unplug power cord to electric motor.
3. Move pump valve to OFF and turn
pressure control knob fully counter-
clockwise to lowest setting.
4. Disengage trigger lock. Hold metal part
of gun firmly to side of grounded metal
pail, and trigger gun to relieve pressure.
5. Engage gun trigger lock.
6. Turn prime valve down to DRAIN posi-
tion. Leave prime valve down until
ready to spray again.
7. If you suspect the spray tip or hose is
clogged or that pressure has not been
fully relieved:
a. VERY SLOWLY loosen tip guard
retaining nut or hose end coupling to
relieve pressure gradually.
b. Loosen nut or coupling completely.
c. Clear hose or tip obstruction.
This equipment stays pressurized until
pressure is manually relieved. To help
prevent serious injury from pressurized
fluid, such as skin injection, splashing fluid
and moving parts, follow the Pressure
Relief Procedure when you stop
spraying and before cleaning, checking,
or servicing the equipment.

Startup (Internal Combustion Models)
20 334606J
Startup (Internal Combustion Models)
1. Place displacement pump in grounded
metal pail partially filled with flushing
fluid. Attach ground wire to pail and to
earth ground.
2. Turn prime valve down to DRAIN
position. Turn pressure control
counterclockwise to lowest pressure.
3. Set hydraulic pump valve OFF.
4. Start a gasoline engine, see step 5. Start
a Diesel engine, see step 6.
5. Start gasoline engine:
a. Move fuel valve to open.
b. Move choke to closed.
c. Set throttle to fast.
d. Set engine switch to ON.
ti9692a
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ti9686a