Shark DH3030HGB Service manual

Read instructions carefully before attempting to assemble, install, operate or service this pressure
washer. Failure to comply with instructions could result in personal injury and/or property damage!
Shark R
SHARK PRESSURE WASHERS
SERIAL NUMBER: 21 INVERNESS WAY EAST
ENGLEWOOD, CO 80112
1-800-771-1881
DATE PURCHASED:
FOR SALES AND SERVICE, PLEASE CONTACT:
MODEL DH3030HGB
OPERATING INSTRUCTIONS
AND PARTS MANUAL
SPECIFICATIONS
●PumpVolume At Pump Head: 3.0 GPM/180 GPH
●Pump Pressure At Pump Head: 3000 PSI
●BurnerType: Fuel Oil Fired, 249,000 BTU/Hr.
●Burner Fuel Pressure: 140 PSI
●Machine Power:9.0 HP Gasoline Engine, Manual Start
●Machine Weight: 385 Lbs.
●Shipping Weight: 415 Lbs.
●Burner Exhaust Vent: 8"
●Machine Dimensions: Length = 47", Width = 31", Height = 45"
Output specifications are based on engine power curves at 100
meters above sea level and 25oC ambient temperature in accor-
dance with SAE J1349.

Page2
WARNING
Read and observe to prevent severe personal injury or property damage.
SharkDH3030HGB
●Checkhoses,fittings,wand,triggergunand
fuel connections daily for signs of wear,
cracks and looseness, and replace as
required.
●Keep all electrical components on
machine dry.
●Do not point wand or trigger gun at your-
self or at any person. Bodily injury may
result from water under high pressure.
●Do not block or tie trigger gun in open
position.
●Wear eye, ear, hand, foot, and skin protec-
tion at all times while operating pressure
washer.
●Do not place hands or feet on non-insu-
lated areas of the pressure washer when
starting gasoline engine.
●Do not fill engine fuel tank while engine is
running or hot. Let engine cool before
refueling or spontaneous fire may result.
Fuel spillage or vapors could ignite if
engine is hot.
●Disconnect spark plug and battery prior to
performing any maintenance.
●Avoid contact with non-insulated areas of
pressure washer to prevent the possibility
of severe burns.
●Do not allow machine to run unattended.
●Do not run machine indoors or in an
enclosed area, as exhaust fumes may be
hazardous to your health.
●Do not operate machine in areas where
flammablevapors,(gasoline,solvents,etc.)
may be present, as this machine may
ignite the vapors.
●Do not store flammable liquids (gasoline,
diesel fuel, solvents, etc.) near pressure
washer or in non-ventilated areas.
●Use extreme caution when moving pres-
sure washer over rough or uneven sur-
faces.
●For permanent installation consult local
building codes for installation require-
ments. Licensed contractor may be
required.
●Troubleshoot machine prior to using
reset buttons or replacing blown fuses.
SeeTroubleshooting Guide.
●Pressurewashersproduce akickback.To
prevent personal injuries due to falls use
auxiliary safety equipment.
●When applying detergents follow the
safety rules on the detergent label.
●Use detergent from a covered D.O.T.
approved container.
●Cleaning area should be provided with
adequate slopes and drainage. This will
reduce the possibility of a fall due to slip-
pery surface.
●Unauthorizedmachine modificationoruse
of non-approved replacement parts may
cause personal injury and/or property
damage and will void the manufacturer
warranty.
●This machine has been provided with
Warning and Instruction decals for the
safety of the operator. If these decals are
removedor becomedamaged theyshould
be replaced. Contact your dealer for
replacement decals.

Page 3Shark DH3030HGB
ENGINE OIL DRAIN
Figure 1 - Machine Component Layout
DETERGENT
NOZZLE
PRESSURE
NOZZLE
DUAL LANCE WAND
RELIEF VALVE BURNER EXHAUST VENT
TRIGGER GUN
PRESSURE
HOSE
NOZZLE HOLDERS
ENGINE
BATTERY BOX
BURNER SWITCH
THERMOSTAT
DETERGENT
INJECTOR CONTROL BOX
GARDEN HOSE
CONNECTOR
OIL BURNER
FUEL TANK
PUMP
COIL DRAIN
PLUG
DETERGENT INLET LINE
OIL BURNER

Page 4 Shark DH3030HGB
Figure 2 - Pressure Hose Installation
ASSEMBLY
Unpacking
Unpack carefully. Wear safety glasses or goggles while
unpacking, assembling, or operating pressure washer. If
there are missing components or hidden damage,
immediately contact carrier concerning discrepancies.
1. Cut strapping band from pressure washer and pallet.
2. Remove pressure washer from pallet.
Parts Included
•Pressure Washer
•Pressure Hose w/Trigger Gun
•Dual LanceWand
•Pressure Nozzle (3 ea.)
•Battery Terminal (2 ea.)
•Operating Instructions and Parts Manual
•Gasoline Engine Manual
•Oil Burner Manual
Tools Required
•1/2" Open End Wrench
•Flat Blade Screwdriver
Pressure Hose,Trigger Gun and Wand
1. Install the pressure hose on the pressure washer as
shown in Figure 2.
Figure 3 -Trigger Gun/Dual Lance Wand
2. Assemble wand components as shown in Figure 3.
3. Make sure all plumbing connections are tight.
Battery
WARNING:Wear eye,hand and skin protection when
handling or connecting battery.
WARNING: Batteries generate explosive gases dur-
ing normal battery operation. Do not expose the bat-
tery to flame or sparks as these gases may ignite.
WARNING:Battery fluid is highly acidic.If battery fluid
contactsskinorclothing,wash immediatelywithsoap
andwater.Ifbatteryfluidenterseye,immediately flood
eye with running cold water for at least 15 minutes
and get immediate medical attention.
1. Place battery in battery box (battery not included).
Use a standard 12 volt automotive battery. Select a
battery similar to the one in Figure 4 for proper fit
and installation.
Figure 4 - Battery Dimensions
+
-
RELIEF VALVE
PRESSURE HOSE
DUAL LANCE WAND
TRIGGER GUN
10-1/2”
MAX 6-3/4”
MAX
8-3/4”
MAX

Page 5Shark DH3030HGB
2. Install the provided battery terminals as shown in
Figure 5.
3. To reduce the possibility of sparking attach the wires
tothebatteryinthefollowingorder.RefertoFigure 5.
First attach the red wire from the voltage regulator
and the red wire from the control box to the positive
“+”terminalofbattery.Next,attach the black wirefrom
the control box and the black wire from the voltage
regulator to the negative“-”terminal of the battery.To
disconnect the battery remove the wires in the oppo-
site order as installed. Install battery box cover and
fasten in place.
Figure 5 - Battery Connections
INSTALLATION
Getting Started
IMPORTANT: Proper initial installation of equipment
willassuremoresatisfactory performance,longer ser-
vice life, and lower maintenance cost.
IMPORTANT:The use of a backflow preventer on the
water supply hose is recommended and may be
required by local code.
The pressure washer should be run 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.The pressure washer should be
located to assure easy access for filling of fluids,
adjustmentsandmaintenance.Normalprecautionsshould
betakenbythe operatortopreventmoisturefrom reaching
the pressure washer. It is recommended that a partition
bemadebetweenthe washareaand thepressurewasher
to prevent direct spray from the wand from coming in
contact with the pressure washer. Moisture reaching the
equipment will reduce the pressure washer’s service life.
Allinstallationsmustcomplywiththelocalcodes covering
such installations.
Venting
DANGER: Do not run machine indoors or in an
enclosed area, as exhaust fumes may be hazardous
to your health.
DANGER: Do not operate machine in areas where
flammable vapors (gasoline, solvents, etc.) may be
present, as this machine may ignite the vapors.
CAUTION: All venting must be in accordance with
applicable federal and state laws, and local ordi-
nances. Consult local heating contractors.
If the pressure washer is to be used in an enclosed area,
a flue must be installed to vent burner and engine
exhaust to the outside atmosphere. Be sure the flue is
thesamesizeastheburnerexhaustventonthepressure
washer. See Figure 1 for location. 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
combustioncanonlybeobtained whenthereisa sufficient
supply of oxygen available for the amount of fuel being
burned.If it is necessarytoinstallthemachineinapoorly
ventilated area, outside fresh air may have to be piped to
the burner and a fan installed to bring sufficient air into
the machine.Locate the pressure washer so that the flue
will be as straight as possible and protrude through the
roof at a proper height and location to provide adequate
draft. This oil fired pressure washer must have a draft
regulatorinstalledintheflue(availablefrommostheating
contractors). A draft regulator will permit proper upward
flow of exhaust flue gases.
Inaddition,thepressure washershouldnever beoperated
in an enclosed area where high ambient temperatures
exist. High ambient temperatures (above 100oF) can
causeengineoil failureand willgreatlyreducetheengine’s
performance.
Gasoline Engine
This gasoline engine is preset for operation at altitudes
below 3000 feet above sea level. If operated at higher
altitudes, it may be necessary to install a high altitude
main jet in the carburetor. Contact an authorized engine
sales and service center for details.
BOX STRAP BATTERY BOX
BLACK WIRE
FROM VOLTAGE
REGULATOR
RED WIRE FROM
CONTROL BOX
BLACK WIRE
FROM
CONTROL BOX
RED WIRE
FROM VOLTAGE
REGULATOR
BATTERY
TERMAINAL
BATTERY BOX
12 VOLT BATTERY

Page 6 Shark DH3030HGB
Oil Burner
Burner Air Adjustment: The oil burner on this machine
is preset for operation at altitudes below 3000 feet. If
operatedathigheraltitudes,itmay benecessaryto adjust
the air shutter and air band setting. Adjust the air shutter
for a #1 or #2 smoke spot on the Bacharach scale.
To adjust, start machine and turn burner ON (refer to
Operation for details).Loosen two locking screws found
in the air shutter openings (refer to Figure 6) and close
airshutteruntilblack smoke appearsfromburner exhaust
vent. Note air shutter position. Next, slowly open the air
shutter until white smoke just starts to appear. Turn air
shutter halfway back to the black smoke position
previously noted.Tighten locking screws.
If the desired position cannot be obtained using only the
air shutter, lock the air shutter in as close a position as
canbeobtained,thenrepeattheabove procedure on the
air band setting.
CAUTION: If white smoke appears from burner
exhaustventduring start-up or operation,discontinue
use and readjust air bands.
NOTE: If a flue is installed, have a professional ser-
viceman adjust your burner for a #1 or #2 smoke spot
on the Bacharach scale.
OPERATION
Before Starting
1. Readallmanualsprovided withthispressurewasher.
Become familiar with location and function of all
operating and safety controls.
WARNING: Check hoses, fittings, wand, trigger gun
and fuel connections daily for signs of wear, cracks
and looseness, and replace as required.
2. Connect water supply hose to the garden hose con-
nector located on pump.The water faucet and supply
hose must be capable of providing a minimum of 3.0
gallons per minute (GPM).
3. Filloilburner fuel tank.Usekerosene,#1grade home
heatingoil,#1or#2dieselfuel.DO NOT USE GASO-
LINE, CRANKCASE OIL DRAININGS, OR WASTE
OIL.
WARNING: Do not fill engine fuel tank while engine
is running or hot. Let engine cool before refueling or
spontaneous fire may result. Fuel spillage or vapors
could ignite if engine is hot.
4. Fill the engine fuel tank. Do not overfill, fill to the bot-
tom of filler neck only. Use lead free gasoline mini-
mum 86 octane, or lead free gasoline containing no
more than 15% MTBE. DO NOT use gasoline con-
taining more than 5% methanol or more than 10%
ethanol. Refer to the provided gasoline engine
manual for additional details.
5. Check pump and engine oil levels.
6. If detergents are to be used, only use detergents
intended for pressure washers.Follow instructions on
the detergent container.
IMPORTANT: Before installing pressure nozzle on
initial start-up, turn on the water supply and allow
water to run from the end of the wand until clear to
prevent the nozzle from clogging.
IMPORTANT: If the pressure washer has not been
used for an extended period of time,remove the pres-
sure nozzle from the end of the wand and turn on
water supply. Allow water to run from the end of the
wand until clear.
7. Install the proper pressure nozzle for your cleaning
needs on end of wand, refer to Figure 7.
IMPORTANT:The trigger gun provided with this pres-
sure washer is equipped with a manual trigger lock
to prevent accidental operation of the trigger gun,
refer to Figure 7. The trigger lock should be used
whenever the trigger gun is not in use.
Figure 7 - Nozzle Installation/Trigger Lock
Figure 6 - Burner Adjustment
TRIGGER LOCK
TRIGGER GUN
DUAL LANCE WAND
PRESSURE NOZZLE
AIR SHUTTER LOCKING SCREW
AIR SHUTTER
AIR BAND
AIR BAND
LOCKING SCREW
AIR SHUTTER LOCKING SCREW

Page 7Shark DH3030HGB
To Start
DANGER: Do not point wand or trigger gun at your-
self or at any person. Bodily injury may result from
water under high pressure.
WARNING:Wear eye, ear, hand, foot and skin protec-
tion at all times while operating pressure washer.
IMPORTANT: The water must be turned on before
starting. Running the pump dry will cause damage
and void warranty.
IMPORTANT: Do not allow the machine to run with
trigger of the trigger gun released for more than
10 minutes at any one time or damage to pump may
occur.
1. Turn ON water supply.
2. Hold wand firmly, release trigger of trigger gun.
3. Turn engine ON/OFF switch to ON position.
4. Turnfuelshut-offvalvetoONposition(if soequipped).
Move choke lever to FULL CHOKE position, (choke
may not be needed on warm engine). Move throttle
lever to HALFTHROTTLE position.
5. Pulltheropestarterslowlyuntilresistanceisfelt, then
pull briskly.Do not allow the rope starter to snap back
against the engine. Return it gently to prevent dam-
age to the starter.
6. When the engine starts, move choke lever until
engine runs smoothly. Move throttle lever to FULL
THROTTLE position. When engine warms, move
choke lever to NO CHOKE position.
IMPORTANT:To allow for proper battery charging the
throttle control must be kept in the full throttle posi-
tion during operation.
NOTE: If engine fails to start, refer to Troubleshoot-
ing Guide in this manual.
7. Squeeze trigger of trigger gun and allow air to purge
from system.
8. If HOT water is desired, adjust the thermostat to the
proper temperature and turn burner switch ON. The
burnerwilllightimmediately withasmallpuffofsmoke.
You may need to initially adjust your burner for peak
performance.See Oil Burner section under Installa-
tion. If smoke continues, contact Customer Service
at 1-800-771-1881. When the trigger of the trigger
gun is released or when the thermostat temperature
setting is reached, the burner will automatically turn
off.
To Clean
DANGER: Do not place hands or fingers in front of
high pressure spray. Bodily injury may result.
1. Insert detergent inlet line into container of mixed
detergent. Squeeze the trigger of the trigger gun.
Opendetergentcontrolhandleonthe duallancewand,
2. 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.
3. Do not wash at a 90oangle to work (straight at it).
This will allow water to splash back at you and
reduces your cleaning power. Wash at a 30oto 60o
angle to the work.This will allow the water to splash
away from you and the water will wash the dirt away
faster and easier.
4. Use the full width of the spray pattern to wash in
a wide path. Overlap spray paths for complete
coverage.Wash from side to side, using slow, steady
motions.
5. The nozzle should be 12" to 24" from work, closer for
tough areas. Be careful on painted or delicate sur-
faces, the pressure may damage surface if nozzle is
too close.
6. Smallpartsshouldbewashedin a basketsothe pres-
sure does not push them away. Larger, lightweight
parts should be clamped down so the pressure does
not push them away.
7. Close the detergent control handle on the dual lance
wand to permit high pressure rinse, refer to Figure 8.
Rinse from top to bottom to prevent detergent from
dripping onto rinsed area.
To Stop
1. Ifdetergentswereused,drawclearwaterthroughthe
detergent inlet line to purge detergent. Failure to do
so may clog detergent injector valve.
2. If burner was used, turn OFF burner switch and
allow pump to run cold water through coil for several
minutes.
3. Move throttle lever to idle position.
4 Turn engine ON/OFF switch to the OFF position.
5. Close fuel shut-off valve.
6. Turn water supply OFF.
7. Squeeze trigger of trigger gun to relieve system
pressure.
Figure 8 - Dual LanceWand Operation
refer to Figure 8. The output pressure is auto-
matically reduced for detergent application. Allow
detergent to reach end of wand before proceeding to
step 2.
DUAL LANCE WAND
OPEN CLOSE
DETERGENT CONTROL HANDLE

Page 8 Shark DH3030HGB
10. Hold wand firmly, release the trigger of the trigger
gun.
11. Start engine. Place throttle lever in the idle position.
12. Squeeze trigger on trigger gun.
13. Slowly pour antifreeze into the funnel. Continue to
add antifreeze until antifreeze flows from the end of
the wand.
14. Squeeze and release the trigger of the trigger gun
several times to antifreeze the unloader system.
15. Release the trigger of the trigger gun.Stop engine.
16. Squeeze the trigger of the trigger gun to relieve sys-
tem pressure.
For added protection, after antifreezing, disconnect the
pressurehosefromthe machineandremovethe coildrain
plug(referto Figure 1 forlocation.)Aftercoil has drained,
replace pressure hose and coil drain plug.If the pressure
washer is not to be used for an extended length of time, it
is recommended that the system be flushed with
antifreeze for rust protection. Refer to the Gasoline
Engine Manual for engine storage information.
MAINTENANCE
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.
Pump
Lubrication: To lubricate pump, use 30W non-detergent
oil for pump crankcase. Crankcase must be filled to red
dot on oil gauge found on the side of the pump, refer to
Figure 10. During the break-in-period, make sure the oil
ischangedafterthefirst40hoursofoperation.Afterthat,
replace oil every 3 months or 500 hours of operation,
whichever comes first.
Figure 9 -Winterizing
STORAGE
DANGER: Do not store flammable liquids (gasoline,
diesel fuel, solvents, etc.) near pressure washer, or
in non-ventilated areas.
Protect from freezing by storing in a heated area, or by
flushing the system with antifreeze (use an automotive
engine antifreeze or windshield washer solvent to
antifreeze). To flush the system with antifreeze, the
following steps are to be followed:
1. Open detergent control handle on dual lance wand,
refer to Figure 8.
2. Connect the water supply hose to the garden hose
connectorlocatedonthepump.Turn on watersupply.
3. Place the detergent inlet line into a container of anti-
freeze.
4. Hold wand firmly, release trigger of trigger gun.
5. Start engine.Place throttle lever in FULLTHROTTLE
position.
6. Squeezetriggeroftrigger gun and allowwater to flow
from the end of the wand.Watch for antifreeze to be
drawn through the detergent inlet line.Allow the anti-
freeze to be drawn into the system for 5 to 10 sec-
onds.
7. Release the trigger of the trigger gun and stop
engine.
8. Turn off water supply and disconnect water supply
hose from the pump.
9. Attach a short length of hose (approximately 3 feet
long) to the garden hose connector located on the
pump.Install a funnel in the other end of the hose as
shown in Figure 9.
Figure 10 - Pump Lubrication
FUNNEL
GARDEN HOSE
CONNECTOR
OIL FILL / DIPSTICK
OIL GAUGE
OIL DRAIN

Page 9Shark DH3030HGB
Proper Pump Care:
• DO NOT pump acids.
• DO NOT allow pump to run dry.
•Winterize if storing in freezing temperatures, refer
to Storage for details.
•Use a water softener on the water system if known
to be high in mineral content.
•Use only high quality detergents and follow manu-
facturer’s mix recommendations.
•Flush the system with clear water immediately
after using detergent solutions.
•Clean filter screen on detergent inlet line periodi-
cally.
•Flush the pressure washer system with antifreeze
if storing for an extended period of time, refer to
Storage for details.
Gasoline Engine
Refer to the provided gasoline engine manual for
recommendedmaintenance.
Oil Burner
Blower Motor: Inspect the motor brushes for wear
every 250 hours of operation and replace when 1/8" to
1/4" brush material remains. DO NOT allow the brushes
towearout completely or motor damage will occur. Refer
to Figure 23. The motor bearings are permanently
lubricated and will not require any additional lubrication.
Relief Valve
WARNING:The relief valve on this pressure washer
has been factory set and sealed and is a field non-
adjustable part. Tampering with the factory setting
may cause personal injury and/or property damage,
and will void the manufacturer warranty.For replace-
ment parts refer to Figure 20.
UnloaderValve
WARNING: The unloader valve on this pressure
washer has been factory set and sealed and is a field
nonadjustable part. Tampering with the factory
setting may cause personal injury and/or property
damage,and will void the manufacturer warranty.For
replacement refer to Figure 15.
Burner Fuel Filter
Drain any water which has accumulated in fuel filter and
clean or replace filter element as needed. Refer to
Figure 22.
Heating Coil
Coil Descaling: Inhardwater areas,scalebuildupwithin
the heating coil will occur. Scale deposits will decrease
the water temperature rise and may eventually clog the
heating coil. Contact your local service center when
descaling is needed.
Coil Desooting: Poor grades of fuel oil or inadequate
combustion air will cause heavy soot buildup 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 buildup. Contact your
local service center when desooting is needed.
Hour Meter
An optional hour meter (P/N 783865) is available for use
on the Model DH3030HGB.This hour meter will monitor
the total hours of operation of the pressure washer to
signal when routine maintenance is required.
Battery
Refer to battery manufacturer’s literature for recom-
mendedmaintenance.

Page 10 Shark DH3030HGB
TROUBLESHOOTING GUIDE
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
Gas engine will not run. Out of gas. Replenish supply. Use only recom-
mended fuels. Refer to Before Start-
ing under Operation.
Fuel valve closed (if so equipped). Open valve.
Loose spark plug wire. Reconnect.
Choke or throttle set incorrectly. Refer to To Start under Operation.
Engine ON/OFF switch in OFF
position. Place engine ON/OFF switch in ON position.
Low engine oil level. Replenish supply. Engine will not start
or run if oil is low (on engines equip-
ped with low oil protection).
Refer to provided gasoline engine manual for additional troubleshooting.
Pressure washer runs
but won't spray. Trigger of trigger gun released. Squeeze trigger.
Water supply not turned on. Open water supply valve.
Clogged pressure nozzle. Clean pressure nozzle opening.
Low spray pressure
at nozzle. Inadequate water supply. Fully open faucet. Check for kinked or damaged hose. Use 5/8 inch mini-
mum hose. Check for debris clogging
inlet screen.
Partially clogged or damaged
pressure nozzle. Clean or replace.
Air being drawn through detergent
inlet line. Refill detergent container. Ensure that pick-up screen is fully immersed.
Dual lance wand set for detergent
application. Set dual lance wand for rinse. Refer to
Step 7 under To Clean. Washer will
not create high pressure when set for
detergent application.
Uneven spray pattern. Partially clogged or damaged
pressure nozzle. Clean or replace.
Pressure washer will
not produce hot water. Burner switch in OFF position. Place switch in ON position.
Inadequate fuel supply. Refill fuel tank. Use only recom-
mended fuels. Refer to Before Start-
ing under Operation.
Engine not running. Engine must be running before burner
will light.
Inadequate water supply. Fully open faucet. Check for kinked or
damaged hose. Use 5/8 inch mini-
mum hose. Check for debris clogging
inlet screen.

Page 11Shark DH3030HGB
IMPORTANT
If the pressure washer demonstrates other symptoms or the corrective
actions listed do not correct the problem, contact the local authorized Shark
Pressure Washer Service Center. The Shark Pressure Washer Service
Center can be identified by contacting:
Customer Service Department
Shark Pressure Washers
21 Inverness Way East •Englewood, Colorado 80112
1-800-771-1881
TROUBLESHOOTING GUIDE
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
Pressure washer will
not produce hot water.
...continued
Trigger of trigger gun released. Squeeze trigger. Water must be spray-
ing for burner to light.
Thermostat is set too low. Adjust thermostat to desired tempera-
ture.
Blown fuse. Replace. Fuse is located in Control
Box. Refer to Figure 17 for location.
Engine is running too slow. Move throttle lever to full throttle posi-
tion.
Battery charge is low. Charge battery or replace if neces-
sary.
Poor or no detergent
flow. Inadequate detergent supply. Refill detergent container. Ensure that pick-up screen is fully immersed.
Detergent screen or hose clogged. Clean.Always start with a clean deter-
gent container.
Dual lance wand set for high
pressure. Set dual lance wand for detergent application. Refer to Step 1 under To
Clean.
Clogged detergent injector check
valve. Clean check valve at detergent injector inlet.
Poor cleaning. Improper detergent concentration or
mixing. Mix detergent per manufacturer's instructions. Ensure that powdered
detergents are fully dissolved.
Wrong detergent for the application. Select appropriate detergent.
Rinsing with hot water. A final rinse with cold water will reduce
water spotting.

Page 12 Shark DH3030HGB
When ordering from your dealer, please provide the following:
Model Number: DH3030HGB
Machine Serial Number: ________________________________
Component Part Number: _______________________________
Description: __________________________________________
FOR HELP OR ADDITIONAL INFORMATION, CONTACT:
Customer Service Department
Shark Pressure Washers
21 Inverness Way East
Englewood, CO 80112
1-800-771-1881

Page 13Shark DH3030HGB
20,21,22,23,24
1
2
3
4
5,6
7,8,9 10 11 12,13 14
15,16
17,18,19,20
Figure 11 - Machine Assembly, Left SideView
Ref. No. Part No. Description Qty.
14 Fig. 17 Control Box Assembly 1
15 826167 Strain Relief 2
16 703127 Strain Relief Nut 2
17 Fig. 18 Fuel Tank Assembly 1
18 834153 Decal Fuel Type 1
19 ■ Bolt 1/4”- 20 x 1/2”2
20 ■ Flat Washer 1/4”6
21 220119 Battery Box 1
22 890904 Battery Terminal 2
23 375292 Mounting Plate 1
24 ■ Locknut 1/4”- 20 4
■ Standard hardware item available locally.
Ref. No. Part No. Description Qty.
1 375572 Chassis 1
2 646089 Decal Warnings 1
3 646352 Decal Shark Detergent 1
4Fig. 14 Coil Inlet Assembly 1
5 829980 Shark Logo Plate 2
6 926598 Rivet 8
7 213044 Burner Exhaust Vent 1
8 268004 Insulation 1
9 860102 Retaining Ring 1
10 824115 Vent Clip 4
11 Fig. 15 Pump Assembly 1
12 ■ Bolt 3/8”- 16 x 1-3/8”4
13 ■ Lock Washer 3/8”4

Page 14 Shark DH3030HGB
12 3 4
56
7
8
9,10,11
12
13
14,15,16
17,18,19,202122,23,24,25
Figure 12 - Machine Assembly, Right SideView
Ref. No. Part No. Description Qty.
15 ■ Flat Washer 5/16”3
16 799362 Crownlock Nut 5/16”- 18 3
17 817322 Hubcap 4
18 848616 Push Nut 4
19 ■ Flat Washer 5/8”8
20 983013 Wheel 4
21 815329 Snap Bushing 1
22 860232 Voltage Regulator 1
23 218189 Regulator Harness 1
24 ■ Locknut 1/4”- 20 2
25 ■ Flat Washer 1/4”2
✽ Order amount needed in feet.
■ Standard hardware item available locally.
Ref. No. Part No. Description Qty.
1Fig. 19 Engine/OilDrainAssembly 1
2 961532 Tubing3/8” ✽
3 823987 HoseClamp 1
4Fig. 20 CoilOutletAssembly 1
5Fig. 21 Trigger Gun/Dual LanceWand 1
6 707226 Pressure Hose 1
7 826176 Quick Disconnect 1
8 268006 Insulation 1
9 375562 CoilTank 1
10 ■ Fender Washer 5/16”4
11 ■ Flange Nut 5/16”- 18 4
12 646047 DecalTroubleshooting 1
13 213191 Insulation 1
14 Fig. 22 BurnerAssembly 1

Page 15Shark DH3030HGB
Figure 13 - Machine Assembly,TopView
Ref. No. Part No. Description Qty.
7 890783 Tag Gasoline Engine 1
8 444462 Decal Caution Gasoline 1
9 232025 Decal Important Battery 1
10 646026 Decal Carbon Monoxide 1
11 646115 Decal Hot Surface 1
Ref. No. Part No. Description Qty.
1 646088 Decal Operating Instructions 1
2 815329 SnapBushing 3
3 646351 Decal Winterize 1
4 226222 Coil 1
5 859815 Grommet (Nozzle Holder) 3
6 859806 Grommet 1
10 9 8 7 2
6
5
42321
11

Page 16 Shark DH3030HGB
Figure 14 - Coil Inlet Assembly
Ref. No. Part No. Description Qty.
5 754711 Tee 3/8”1
6 801102 Hex Nipple 3/8”x 1-1/2”1
7 873594 Detergent Injector 1
✽ Order amount needed in feet.
Ref. No. Part No. Description Qty.
1 935159 Filter Screen 1
2 961534 Tubing 1/4” ✽
3 823989 Hose Clamp 1
4 715744 Coil Drain Plug 1
1
2
3
4
5
6
7

Page 17Shark DH3030HGB
Figure 15 - Pump Assembly
Ref. No. Part No. Description Qty.
8 644802 Street Elbow 3/8”1
9 921422 Thermal Relief Valve 1
10 644751 Elbow 3/8”1
11 856035 Garden Hose Connector Gasket 1
Replacement Parts
✪ 753209 Unloader Valve Repair Kit 1
Ref. No. Part No. Description Qty.
1 844758 Street Elbow 1/2”1
2 875575 Garden Hose Connector Spring 1
3 801139 Garden Hose Connector 1
4 890769 Tag Unloader 1
5 707179 Hose 3/8”x 30”1
6 ✪ 921813 Unloader Valve 1
7 830624 Pump Fig. 16 1
910 11
87
54
1
6
23

Page 18 Shark DH3030HGB
Figure 16 - Pump, ExplodedView
Ref. No. Part No. Description Qty.
3 753079 Oil Seal Kit 3
4 753085 PlungerSealKit 3
Ref. No. Part No. Description Qty.
1 753084 Valve Plug Kit 6
2 753083 CheckValve Kit 3

Page 19Shark DH3030HGB
Figure 17 - Control Box Assembly
Ref. No. Part No. Description Qty.
13 645990 Bridge Rectifier 1
14 676638 Fuse 30A 1
15 707146 Fuse Holder 1
16 826184 Strain Relief 4
17 847750 Wire Cover ✽
18 ✪ 875651 Pressure Switch 1
■ Standard hardware item available locally.
✽ Order amount needed in feet
Replacement Parts
✪ 753134 O-Ring Kit 1
✪ 875653 Switch 1
Ref. No. Part No. Description Qty.
1 875465 Burner Switch 1
2 645932 Decal Control Box 1
3 835150 Thermostat Dial 1
4 915390 Thermostat Mounting Plate 1
5 ■ Screw 4 mm x 6 mm 2
6 615413 Control Box Front 1
7 630649 Channel 2
8 615414 Control Box Back 1
9 ■ Locknut 1/4”- 20 4
10 ■ Bolt 1/4”- 20 x 3/4”4
11 955940 Thermostat 1
12 860140 Isolation Relay 1
1 2 3 4 5 6 7 8 9 10 12 13 14,15
16
17
18
11

Page 20 Shark DH3030HGB
Figure 18 - FuelTank Assembly
Ref. No. Part No. Description Qty.
6 309294 Nipple 3/8”Hose x 1/4”Hose 1
7 867368 Hose 1/4”Black ✽
8 890890 Fuel Tank 1
✽ Order amount needed in feet.
Ref. No. Part No. Description Qty.
1 817312 Fuel Tank Cap 1
2 661277 Elbow 1/4”Hose x Stand Pipe 1
3 823988 Hose Clamp 4
4 707116 Hose 1/4”Green ✽
5 815230 Bushing 2
12 3 4
56
7
8