Shark Pressure Washers HNG-352007A User manual

9.801-195.0-A
OPERATOR’S MANUAL
To locate your local Shark Commercial Pressure Washer Dealer nearest you,
visit or wwwsharkpw.com
98011950-1
MODEL # ORDER #
HNG-352007A 1.109-667.0
HNG-402007A 1.109-668.0
HNG-502007A 1.109-669.0
HNG-502007B 1.109-670.0
HNG-502007C 1.109-671.0
MODEL # ORDER #
HNG-353007A
HNG-353007B
1.109-672.0
1.109-673.0
HNG-503007B 1.109-674.0
HNG-503007C 1.109-675.0
HNG-503007F 1.109-676.0
HNG

CONTENTS
2
Model Number ______________________________
Serial Number ______________________________
Date of Purchase ____________________________
The model and serial numbers will be found on a decal attached
to the pressure washer.You should record both serial number and
date of purchase and keep in a safe place for future reference.
Shark HNG • 9.801-195.0 • Rev. 4/14
Introduction & Important Safety Information 3-5
Component Identification 6
Installation 7
Installation Guide 8-11
Check List Before Starting 11
Assembly Instructions 12
Operating Instructions 13
Detergents & General Cleaning Techniques 14
Shut-Down, Cleanup, & Storage 15
Basic Facts 16
Maintenance & Service 17-20
Troubleshooting 21-23
Preventative Maintenance Schedule 24
Oil Change Record 25
Exploded View & Parts List 26-29
Burner Assembly & Parts List 30-31
Control Panel Exploded View & Parts List 32-33
Time Delay, Electrical Box, Exploded View & Parts List 34-35
Standard, Electrical Box, Exploded View & Parts List 36-37
Auto Start, Electrical Box, Exploded View & Parts List 38-39
Float Tank Assembly & Parts List 40
Hose, Gun, & Wand Exploded View & Parts List 41
Specifications 42-43
KM.2 Pump Exploded View and Parts List 44-45
KD.1 Pump Exploded View and Parts List 46-47

Shark HNG • 9.801-195.0 • Rev. 4/14
3
PRESSURE WASHER OPERATOR’S MANUAL
INTRODUCTION & IMPORTANT SAFETY INFORMATION
Thank you for purchasing a Shark PressureWasher.
We reserve the right to make changes at any time
without incurring any obligation.
Owner/User Responsibility:
The owner and/or user must have an understanding of
the manufacturer’s operating instructions and warnings
before using this pressure washer.Warning information
should be emphasized and understood. If the operator
is not fluent in English, the manufacturer’s instructions
and warnings shall be read to and discussed with
the operator in the operator’s native language by the
purchaser/owner, making sure that the operator com-
prehends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’ instructions.
The operator must know how to stop the machine
quickly and understand the operation of all controls.
Never permit anyone to operate the engine without
proper instructions.
SAVE THESE INSTRUCTIONS
This manual should be considered a permanent
part of the machine and should remain with it if
machine is resold.
When ordering parts, please specify model and se-
rial number. Use only identical replacement parts.
This machine is to be used only by trained
operators.
IMPORTANT SAFETY
INFORMATION
WARNING: To reduce the risk of
injury, read operating instruc-
tions carefully before using.
1. Read owner's manual thor-
oughly. Failure to follow in-
structions could cause mal-
function of machine and result
in death, serious bodily injury
and/or property damage.
2. Know how to stop the machine and bleed pressure
quickly. Be thoroughly familiar with the controls.
3. Stay alert — watch what you are doing.
4. Do not replace LP tank while machine is running.
5. All installations must comply with local codes.
Contact your electrician, plumber, utility company
or the selling distributor for specific details. If your
machine is rated 250 volts or less, single phase will
be provided with a ground fault circuit interrupter
(GFCI). If rated more than 250 volts, or more than
single phase this product should only be connected
to a power supply receptacle protected by a GFCI.
DANGER: Improper connection of the equipment-
grounding conductor can result in a risk of elec-
trocution. Check with a qualified electrician or
service personnel if you are in doubt as to whether
the outlet is properly grounded. Do not modify the
plug provided with the product - if it will not fit the
outlet, have a proper outlet installed by a qualified
electrician. Do not use any type of adaptor with
this product.
WARNING
KEEP WATER
SPRAY AWAY FROM
ELECTRICAL WIRING.
WARNING: Keep wand, hose, and
water spray away from electric
wiring or fatal electric shock may
result.
6. To protect the operator from
electrical shock, the machine
must be electrically grounded.
It is the responsibility of the
owner to connect this machine
to a UL grounded receptacle of proper voltage and
amperage ratings. Do not spray water on or near
electrical components. Do not touch machine with
wet hands or while standing in water. Always dis-
connect power before servicing.
RISK OF EXPLOSION:
IF GAS SMELL
PRESENT TURN
OFF SUPPLY
WARNING
WARNING: Flammable liquids
can create fumes which can ig-
nite, causing property damage
or severe injury.
WARNING: Risk of explosion —
Operate only where open flame
or torch is permitted.
RISK OF FIRE.
DO NOT ADD FUEL
WHEN OPERATING
MACHINE.
WARNING
WARNING: Risk of fire — Do not
change tanks when the product
is operating or still hot.
WARNING: Use vapor fuel only.
7. Oil burning appliances shall
be installed only in locations
where combustible dusts and
flammable gases or vapors
are not present. Do not store
or use gasoline near this ma-
chine.
8. Keep operating area clear of
all persons.
WARNING
USE PROTECTIVE
EYE WEAR
AND CLOTHING
WHEN OPERATING
THIS EQUIPMENT.
WARNING: High pressure spray
can cause paint chips or other
particles to become airborne and
fly at high speeds. To avoid per-
sonal injury, eye, hand and foot
safety devices must be worn.
WARNING
READ OPERATOR’S
MANUAL THOROUGHLY
PRIOR TO USE.

Shark HNG • 9.801-195.0 • Rev. 4/14
OPERATOR’S MANUAL PRESSURE WASHER
4
WARNING
PROTECT FROM
FREEZING
WARNING: Protect machine from
freezing.
13. To keep machine in best
operating conditions, it is
important you protect machine
from freezing.Failure to protect
machine from freezing
could cause malfunction of the
machine and result in death,
serious bodily injury, and/or property damage. Fol-
low storage instructions specified in this manual.
14. Inlet water must be clean fresh water and no hotter
then 90°F.
WARNING
RISK OF
ASPHYXIATION.
USE THIS PRODUCT
ONLY IN A WELL
VENTILATED AREA.
WARNING: Risk of asphyxiation.
Use this product only in a well
ventilated area.
15. Avoid installing machines in
small areas or near exhaust
fans. Adequate oxygen is
needed for combustion or
dangerous carbon monoxide
will result.
16. Manufacturer will not be liable for any changes
made to our standard machines or any components
not purchased from us.
17. The best insurance against an accident is precau-
tion and knowledge of the machine.
WARNING
RISK OF INJURY
FROM FALLS WHEN
USING LADDER.
WARNING: Be extremely careful
when using a ladder, scaffolding
or any other relatively unstable
location. The cleaning area
should have adequate slopes
and drainage to reduce the pos-
sibility of a fall due to slippery
surfaces.
18. Do not overreach or stand on unstable support.
Keep good footing and balance at all times.
19. Do not operate this machine when fatigued or under
the influence of alcohol, prescription medications,
or drugs.
20. Follow the maintenance instructions specified in
the manual.
21. Do not replace LP tank while machine is running.
Serious injury could result.
WARNING: Use vapor fuel only.
22. The LP models are designed to run on vapor pro-
pane fuel. Do not use liquid fuel. Have a qualified
serviceman install and service your equipment.
IMPORTANT SAFETY INFORMATION
9. Eye, hand, and foot protection
must be worn when using this
equipment.
WARNING
EAR PROTECTION
MUST BE WORN
WARNING:This machine exceeds
85 db appropriate ear protection
must be worn.
HOT DISCHARGE FLUID:
DO NOT TOUCH OR
DIRECT DISCHARGE
STREAM AT PERSONS.
CAUTION: Hot discharge fluid.
Do not touch or direct discharge
stream at persons.
WARNING: This machine pro-
duces hot water and must have
insulated components attached
to protect the operator.
WARNING
RISK OF INJURY.
HOT SURFACES
CAN CAUSE BURNS
WARNING: Risk of injury. Hot
surfaces can cause burns. Use
only designated gripping areas
of spray gun and wand. Do not
place hands or feet on non-insu-
lated areas of the pressure
washer.
10. To reduce the risk of injury, close supervision is
necessary when a machine is used near children.
Do not allow children to operate the pressure
washer. This machine must be attended during
operation.
TRIGGER GUN KICKS
BACK - HOLD WITH
BOTH HANDS
WARNING
WARNING: Grip cleaning wand
securely with both hands before
starting. Failure to do this could
result in injury from a whipping
wand.
11. Never make adjustments on
machine while in operation.
12. Be certain all quick coupler fit-
tings are secured before using
pressure washer.
RISK OF INJECTION
OR SEVERE INJURY
TO PERSONS. KEEP
CLEAR OF NOZZLE.
WARNING
WARNING: High pressure devel-
oped by these machines will
cause personal injury or equip-
ment damage. Keep clear of
nozzle. Use caution when oper-
ating. Do not direct discharge
stream at people, or severe in-
jury or death will result.

Shark HNG • 9.801-195.0 • Rev. 4/14
5
PRESSURE WASHER OPERATOR’S MANUAL
23. Never expose a spark or flame where there may
be unburned gas present.
24. Install the machine 18” above the floor and about
2 feet from wall providing adequate ventilation and
space.
25. When making repairs disconnect from electrical
source and shut off gas valve.
26. Install this machine on non combustible flooring.
27. Do not allow acids, caustic or abrasive fluids to pass
through the pump.
28. Never run pump dry or leave spray gun closed
longer than 1-2 minutes.
WARNING: If connection is made to portable water
supply, a back flow device must be provided.
Follow the maintenance instructions
specified in the manual.
IMPORTANT SAFETY INFORMATION
98011950-2
Example Of Down
Draft Diverter
For Gas Fired
Machines

Shark HNG • 9.801-195.0 • Rev. 4/14
OPERATOR’S MANUAL PRESSURE WASHER
6
98011950-3
COMPONENT IDENTIFICATION
Pump — Develops a volume of water to the pressure
nozzle which develops high pressure.
Pump/Burner Switch— Controls operation of ma-
chine.
Spray Gun — Controls the application of water and
detergent onto cleaning surface with trigger device.
Includes safety latch.
Detergent Valve — Allows you to siphon and mix
detergents.
Wand — Must be connected to the spray gun.
High Pressure Hose — Connect one end to water
pump discharge nipple and the other end to spray
gun.
Pressure Nozzle — Restricts the flow of water which
produces pressure.
Burner
Switch
Spray
Gun
Trigger
Spray
Wand
Pump
Switch
Detergent
Valve
High Pressure
Hose
Detergent Bucket
(optional)
Main Gas
Supply Inlet
1/2 psig
Water Supply
Hose
(not included)
Discharge
Nipple

Shark HNG • 9.801-195.0 • Rev. 4/14
7
PRESSURE WASHER OPERATOR’S MANUAL
INSTALLATION
98011950-4
9.57" I.D.
49-0"
38-3/8"
High Pressure Out
11-3/4"
27-1/2"
44-1/4"
Gas In
1-1/2" NPT-M
3.0"
Fresh Water
In 1.0" GHF
1-1/4"

Shark HNG • 9.801-195.0 • Rev. 4/14
OPERATOR’S MANUAL PRESSURE WASHER
8
INSTALLATION
Place machine in a convenient location providing
ample support, drainage and room for maintenance.
Location:
The location should protect the machine from damag-
ing environmental conditions, such as wind, rain and
freezing.
1. The machine should be run on a level surface
where it is not readily influenced by outside sourc-
es such as strong winds, freezing temperatures,
rain, etc.The machine should be located consider-
ing accessibility for the replacing of components
and the refilling of detergents, adjustments and
maintenance.Normal precautions should be taken
by the operator of the machine to prevent excess
moisture from reaching electrical controls.
2. It is recommended that a partition be made be-
tween the wash area and the machine to prevent
direct spray from the spray gun from coming in
contact with the machine. Excess moisture will
reduce the machine’s life and may cause electrical
shorts.
3. During installation of the machine, beware of
poorly ventilated locations or areas where exhaust
fans may cause an insufficient supply of oxygen.
Sufficient combustion can only be obtained when
there is a sufficient supply of oxygen available for
the amount of fuel being burned. If it is necessary
to install a machine in a poorly ventilated area, out-
side fresh air may have to be piped to the burner
and a fan installed to bring the air into the area.
4. Do not locate near any combustible material. Keep
all flammable material at least 20 feet away.
Local code will require certain distances from floor
and walls. (Two feet away should be adequate).
WARNING: Avoid small areas or near exhaust
fans.
Gas Codes:
Confer with local gas company and with proper mu-
nicipal officials regarding any specific code or regula-
tions governing the installation. The installation must
conform to local codes.
Electrical:
The machine, when installed, must be electrically
grounded in accordance to local codes. Check for
proper power supply using a volt meter; check the
serial plate for the correct requirements.
Gas Piping:
Figure 1: DRIP LEG
Sediment trap (drip leg) must be
installed in the supply line.
Install a union in the gas line adjacent to and upstream
from the control manifold and downstream from the
manual main shut-off valve. A 1/8” NPT plugged
tapping accessible for test gauge connection shall
be installed immediately upstream of the gas supply
connection for the purpose of determining the gas
supply pressure to the burner, and to prevent damage
to gas valve.
If a manual gas shut off valve is not in the gas supply
line within six feet of the machine and in an accessible
location, one shall be installed.
Figure 2: UNION LOCATION
98011950-6
Manual
Shut-Off Valve
1/8” NPT Plugged
Pressure Gauge
Port Location
Union
Control Manifold
Tee
Flow
3” (7.62 mm)
Minimum
Floor Level
Pipe
Cap
To
Gas Valve
98011950-5
1/8”Test Port
(6” - 14 W.C. or
1/2” PSIG)
Gas
Valve
Gas
Valve
Drop
3” (7.62 mm)
Minimum
3”
(7.62 mm)
Minimum

Shark HNG • 9.801-195.0 • Rev. 4/14
9
PRESSURE WASHER OPERATOR’S MANUAL
INSTALLATION
The following pipe and stack sizes are just recom-
mendations. Always consult a local plumber and vent-
ing contractor for local codes and regulations during
installation.
The following tables are maximum capacity of final
stage pipe in thousands of Btu/hr of commercial
propane
From first stage regulator (at tank) to second stage
regulator
The chart below is based on incoming gas pressure
of 10 PSI and a pressure drop of 1 PSI. Numbers are
for straight schedule 40 pipe; fittings further reduce
capacity.
From second stage regulator to machine.
The following chart is based on incoming gas pressure
of 11 w.c.i. and a pressure drop of .5 w.c.i. Numbers
are for straight schedule 40 pipe; fittings further reduce
capacity.
The chart below is based on gas pressure in the range
0-.5 PSI, specific gravity of .6, and pressure loss of
.5 w.c.i. Numbers are for straight schedule 40 pipe;
fittings further reduce capacity.
PROPANE
Length of Pipe
(ft.)
Iron Pipe Size
1/2" 3/4"
10 3339 6982
20 2295 4799
30 1843 3854
40 1577 3298
50 1398 2923
60 1267 2649
70 1165 2437
80 1084 2267
90 1017 2127
100 961 2009
150 772 1613
200 660 1381
250 585 1224
300 530 1109
350 488 1020
400 454 949
450 426 890
500 402 841
PROPANE
Length of
pipe (ft.)
Iron Pipe Size
1/2" 3/4" 1"
10 291 608 1146
20 200 418 788
30 161 336 632
40 137 287 541
50 122 255 480
60 110 231 435
70 102 212 400
80 94 198 372
90 87 185 349
100 84 175 330
NATURAL GAS
Length
of Pipe
(ft.)
Iron Pipe Size
3/4" 1" 1-1/4" 1-1/2" 2
10 360 680 1400 2100 3950
20 250 465 950 1460 2750
30 200 375 770 1180 2200
40 170 320 660 990 1900
50 151 285 580 900 1680
60 138 260 530 810 1520
70 125 240 490 750 1400
80 118 220 460 690 1300
90 110 205 430 650 1220
100 103 195 400 620 1150
150 84 160 325 500 950
200 72 135 280 430 800

Shark HNG • 9.801-195.0 • Rev. 4/14
OPERATOR’S MANUAL PRESSURE WASHER
10
INSTALLATION
Venting:
This machine is to be used indoors and requires
ventilation.
When venting the machine, if the machine is to be in
an enclosed area with a vent pipe, be sure it is the
same size as the stack on the machine. Poor draft will
cause the machine to soot and not operate efficiently.
When placing the machine for installation, position the
vent pipe to be as straight as possible and to protrude
through the roof of the building at a proper location and
at sufficient height to eliminate down-draft.Venting of a
gas fired machine shall be installed with a down-draft
diverter located about 3 ft. above machine.
Input - BTU Per Hour Draft Hood &
Flue Pipe Size
250,000 - 320,000 8 inch
320,000 - 410,000 9 inch
410,000 - 600,000 10 inch
600,000 - 750,000 12 inch
NOTE: If the vent pipe exceeds 10 ft. in length, or
contains more than two elbows, use next size larger
pipe and draft diverter or the burner will not ignite. No
movable vent pipe damper should be used on any
installation.
Draft Diverter:
Install the draft diverter
above the heating coil.
The diverter enhances
the draft through the
burner by severing the
chimney effect created
in sections of vent pipe
positioned below. It also
helps prevent freezing
of the coil due to wind
chill factors.
When in a tightly closed
room without ventilation
openings to the outdoors or other rooms, provisions
shall be made for supplying air for combustion through
special openings, one near the floor and the other
near the ceiling, each to be sized on the basis of one
square inch or more of free area for each 1,000 BTU
input per hour (see Figure 4).
When a room is of unusually tight construction and
has a ventilating fan, which may be used for exhaust-
ing air outdoors -or has a vented exhaust — it is
recommended that combustion air be supplied to
the enclosed room through intakes extending to the
outside of the building and terminating in down-turned
fittings. These should be suitably arranged to prevent
obstruction from snow or rain, and include a protecting
screen not smaller than 1/4 inch mesh.
98011950-2
Optional
Figure 3
Figure 4 Water Source:
The water source for the machine should be supplied
by a 5/8" I.D. garden hose with a city water pressure of
not less than 30 PSI. If the water supply is inadequate,
or if the garden hose is kinked, the machine will run
very rough and the burner will not fire.
Water Connection:
Connect the high pressure hose by pulling the coupler
collar back and then inserting it onto the discharge
nipple. Secure it by pushing the collar forward.
Attach the wand into the spray gun using teflon tape
on the pipe threads to avoid leaks.
Inspection and Testing Gas Piping:
The building structure should not be weakened by
installing the gas piping. The piping should not be
supported by other piping, but should be firmly sup-
ported with gas hooks, straps, bands or hangers. Butt
or lap welded pipe should not be run through or in an
air duct or clothes chute.
Before turning gas under pressure into piping, all open-
ings from which gas can escape should be closed.
Immediately after turning on gas, the system should
be checked for leaks.This can be done by watching the
1/2 cubic foot test dial for 5 minutes for any movement
or by soaping each pipe connection and watching for
bubbles.If a leak is found, make the necessary repairs
and repeat the above test.
Defective pipes or fittings should be replaced and not
repaired. Never use a flame or fire in any form to locate
gas leaks — use a soap solution.
After the piping and meter have been checked com-
pletely, purge the system of air. DO NOT bleed the air
inside an enclosed room.
During pressure testing of the system at test pressures
in excess of 1/2 PSIG, the appliance and its individual
shut-off valve must be disconnected from the gas sup-
ply piping system or damage to the gas valve will occur.
98011950-7
Illustration showing air openings necessary
to supply air for combustion when installed
in an enclosed room.
Ventilating Air
Opening
1 square inch for
each 1000 BTU
per hour input.

Shark HNG • 9.801-195.0 • Rev. 4/14
11
PRESSURE WASHER OPERATOR’S MANUAL
INSTALLATION
CHECK LIST BEFORE STARTING:
CAUTION! If“NO” is checked on any of the following
sixteen questions, do not operate this machine.
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING
If you do not follow these instructions exactly, a fire or
explosion may result, causing property damage, per-
sonal injury or loss of life.
A. This appliance has a pilot which must be lighted by
hand. When lighting the pilot, follow these instructions
exactly.
B. BEFORE LIGHTING smell all around the appliance
area for gas. Be sure to smell next to the floor because
some gas is heavier than air and will settle on the floor.
FOR YOUR SAFETY
“WHAT TO DO IF YOU SMELL GAS”
• Do not try to light any appliance.
• Do not touch any electrical switch, do not use any
phone in your building.
• Immediately call your gas supplier from a neigh-
bor’s phone. Follow the gas supplier’s instructions.
• If you cannot reach your supplier, call the re
department.
C. Use only your hand to push in or turn the gas
control knob. Never use tools. If the knob will not
push in or turn by hand, don’t try to repair it; call a
qualified service technician. Forced or attempted
repair may result in a fire or explosion.
D. Do not use this appliance if any part has been under
water. Immediately call a qualified service technician
to inspect the appliance and to replace any part of
the control system and any gas control which has
been under water.
YES NO
Has gas supply been inspected by an
authorized contractor to meet local codes?
Is machine protected from
downdraft and excessive wind?
Is machine shielded from
moisture or water spray?
Is the voltage correct and are the circuit
breaker and supply cord adequate according
to specifications and serial plate notation?
Is the machine electrically grounded?
Is there ample water supply?
Have all flammable liquids or gases
been removed from installation location?
Is there adequate gas supply for
the BTU rating of the burner?
Is incoming gas supply pressure between
6 - 14 water column inches or 1/2 PSIG?
Has the proper gas regulator been
installed for pressure and volume?
Is the machine properly vented
to allow adequate air flow?
Are the propane tanks large enough,
according to rating to prevent freezing.
Have gas lines been checked for gas leaks?
Have gas lines been
checked with local codes?
Have all operators using this machine
been instructed properly & have they
read the manual?
Has the machine been installed
according to operator’s manual instructions?
State
Natural Gas LP Gas
Factory
Setting Adj. Range
Factory
Setting
Adj.
Range
Low
Fire .8 in. wc
.8 to 2 in.
wc
1.4 in.
cw
1.4 to 4.2
in. wc
High
Fire
3.5 in.
wc
3 to 4.5 in.
wc
10 in.
wc
8.8 to 11.5
in. wc
Gas Pressure Regulation Ranges:
If the desired input rating cannot be obtained within the
above manifold pressure adjusting range, then the next
size larger or smaller burner orifice should be used.
The gas pressure coming out of the regulator and going
to the burner ring has been factory set for elevations of
0 to 2000 ft. Altitudes greater than 2000 ft will require
adjustments to the gas manifold pressures. Consult
your local service dealer/distributor for high altitude
adjustments. In Canada, certification for installation
at altitudes over 4500 feet above sea level is the
jurisdiction of local authorities.You should not readjust
the burner ring gas pressure. If you replace your gas
valve, you will need to adjust the new valve. Refer
to your machine’s specification plate for the correct
pressure setting. Follow the installation and adjustment
instructions provided with your replacement valve.
NOTE: Air for combustion and ventilation along with
exhaust flue sizing must conform to methods outlined
in current American Standard (ANSI-Z223.1) National
Fuel Gas Code or National Standard of Canada
CSA-149.1 and CSA-149.2 “Installation Code for Gas
Burning Appliances”.

Shark HNG • 9.801-195.0 • Rev. 4/14
OPERATOR’S MANUAL PRESSURE WASHER
12
98011950-12
98011950-9
98011950-8
ASSEMBLY INSTRUCTIONS
98011950-11
STEP 1: Attach the high pressure
hose to the spray gun by threading
hose fitting onto gun and tighten.
STEP 2: Unscrew guard from wand
to remove nozzle. When inserting
pressure nozzle check for o-ring.
STEP 3: Connect the high pres-
sure hose to the pump discharge
fitting by threading hose fitting onto
discharge.
STEP 5: Connect garden hose to
the cold water source.
STEP 6: Check inlet filters, re-
move debris, then connect the
garden hose to pump water inlet.
CAUTION: Do not run the pump
without water or pump damage
will result.
Safety
Latch
Spray
Gun
High
Pressure
Hose
Pressure
Nozzle
Wand
Cold
Water
Source
Garden
Hose Water Inlet
Garden
Hose
Discharge
Nipple
Coupler
98011950-10

Shark HNG • 9.801-195.0 • Rev. 4/14
13
PRESSURE WASHER OPERATOR’S MANUAL
98011950-16
98011950-14
98011950-17
OPERATING INSTRUCTIONS
98011950-13
STEP 1: Review installation instruc-
tions prior to connecting garden
hose to the cold water source and
turn water on completely. Never
use hot water.
STEP 2: Trigger the spray gun to
eliminate trapped air then wait for a
steady flow of water to emerge from
the spray nozzle.
Cold
Water
Source
Garden
Hose
WARNING! Never replace noz-
zles without engaging the safety
latch on the spray gun trigger.
Safety
Latch
STEP 3: Have an electrician con-
nect power supply into junction box
according to information shown
on the serial plate before turning
gas valve dial to “PILOT” or “ON”
position.
AUTO IGNITION
OPTION
If your machine has Auto
Ignition option, follow
these steps.
1. Have electrician connect power
supply into junction box accord-
ing to information shown on
serial plate and open main gas
supply.
2. Push pump switch to “ON” posi-
tion, pull trigger on spray gun.
3. After water and pressure is
exiting pressure nozzle push
burner switch “ON”. NOTE:
Thermostat should be set at
200°.
4. The pilot will ignite first then you
will notice a flash of light indicat-
ing complete ignition. NOTE:
You should hear a clicking
sound before the pilot ignites.
98011950-15
STEP 4: Turn gas cock dial (located on rear of machine) to “PILOT”
position. Depress control knob and hold it in. After 5 seconds, depress the
red ignitor until you hear a loud click. Repeat 3 or 4 times if necessary until
pilot is lit. If pilot does not remain lit, repeat operation, allowing a longer
period of time before releasing the knob. After the pilot lights, continue
to hold the control knob down for 1 minute. NOTE: Sufficient time must
be allowed for a proper size pilot flame to energize the thermocouple and
hold the safety magnet in a locked-up position. Release dial and turn to full
ON. Push pump switch ON, or turn to pump position and pull the trigger
on the spray gun allowing cold water to flow. To activate the gas control
valve for hot water, push the burner switch to the ON position and pull the
trigger on the spray gun.
Red
Ignitor
Control
Knob

Shark HNG • 9.801-195.0 • Rev. 4/14
OPERATOR’S MANUAL PRESSURE WASHER
14
WARNING: Some detergents
may be harmful if inhaled or in-
gested, causing severe nausea,
fainting or poisoning.The harm-
ful elements may cause property
damage or severe injury.
STEP 1: Use detergent designed
specifically for pressure washers.
Household detergents could dam-
age the pump. Prepare detergent
solution as required by the manu-
facturer. Fill a container with pres-
sure washer detergent.
STEP 2: Place siphon tube strainer
into detergent container open de-
tergent valve. Place the filter end
of detergent suction tube into the detergent container.
STEP 3: Pull trigger to oper-
ate machine. Liquid detergent
is drawn into the machine and
mixed with water. Apply deter-
gent to work area. Do not allow
detergent to dry on surface.
Follow operating instructions.
IMPORTANT: You must flush
the detergent siphoning system after each use by
placing the suction tube into a bucket of clean water,
then run the pressure washer for 1-2 minutes.
THERMAL PUMP PROTECTION
If you run your pressure washer for 3-5 minutes without
pressing the trigger on the spray gun, circulating water
in the pump can reach high temperatures. When the
water reaches this temperature, the pump protector
engages and cools the pump by discharging the warm
water onto the ground. This thermal device prevents
internal damage to the pump.
CLEANING TIPS
Pre-rinse cleaning surface with fresh water. Place de-
tergent suction tube directly into cleaning solution and
apply to surface at low pressure (for best results, limit
your work area to sections approximately 6 feet square
and always apply detergent from bottom to top). Allow
detergent to remain on surface 1-3 minutes. Do not al-
low detergent to dry on surface. If surface appears to
be drying, simply wet down surface with fresh water. If
needed, use brush to remove stubborn dirt. Rinse at
high pressure from top to bottom in an even sweeping
motion keeping the spray nozzle approximately 1 foot
from cleaning surface. Use overlapping strokes as you
clean and rinse any surface. For best surface cleaning
action spray at a slight angle.
Recommendations:
• Before cleaning any surface, an inconspicuous
area should be cleaned to test spray pattern and
distance for maximum cleaning results.
• If painted surfaces are peeling or chipping, use
extreme caution as pressure washer may remove
the loose paint from the surface.
• Keep the spray nozzle a safe distance from the
surface you plan to clean. High pressure wash a
small area, then check the surface for damage. If no
damage is found, continue to pressure washing.
CAUTION - Never use:
• Bleach, chlorine products and other corrosive
chemicals
• Liquids containing solvents (i.e., paint thinners,
gasoline, oils)
• Tri-sodium phosphate products
• Ammonia products
• Acid-based products
These chemicals will harm the machine and will dam-
age the surface being cleaned.
RINSING
It will take a few seconds for the detergent to clear.
Apply safety latch to spray gun. Select and install de-
sired high pressure nozzle. NOTE: You can also stop
detergent from flowing by removing detergent siphon
tube from bottle.
WARNING
DETERGENTS & GENERAL CLEANING TECHNIQUES
98011950-18
98011950-19
Detergent Valve
Siphon Strainer
98011950-20

Shark HNG • 9.801-195.0 • Rev. 4/14
15
PRESSURE WASHER OPERATOR’S MANUAL
98011950-24
98011950-37
SHUTTING DOWN AND CLEAN-UP
STORAGE
CAUTION: Always store your pressure
washer in a location where the temperature
will not fall below 32°F (0°C). The pump in
this machine is susceptible to permanent damage
if frozen. FREEZE DAMAGE IS NOT COVERED BY
WARRANTY.
1. Stop the pressure washer, squeeze spray gun
trigger to release pressure.
2. Detach water supply hose and high
pressure hose.
98011950-22
STEP 1: Remove detergent suction
tube from container and insert into
one gallon of fresh clean water. Pull
trigger on spray gun and siphon
water for one minute.
STEP 2: Turn/push burner switch to
“OFF” position. Open spray gun al-
lowing water to cool.Then turn/push
pump switch to “OFF” position.
STEP 3: Turn off water supply. STEP 5: Engage the spray gun
safety lock.
STEP 4: Press trigger to release
water pressure.
Safety
Latch
3. Turn on the machine for a few seconds, until
remaining water exits. Turn off immediately.
4. Do not allow high pressure hose to become
kinked.
5. Store the machine and accessories in a room which
does not reach freezing temperatures.
CAUTION: Failure to follow the above directions will
result in damage to your pressure washer.
Burner
Switch
Pump
Switch
98011950-23
98011950-21

Shark HNG • 9.801-195.0 • Rev. 4/14
OPERATOR’S MANUAL PRESSURE WASHER
16
BASIC FACTS
PRESSURE EQUIVALENTS
Simply stated, pressure is the force exerted by a gas or liquid attempting to escape from a container. It is useful
to know how strong this “attempt to escape” is. Pressure can be measured with a manometer or with a pressure
gauge. At the lower levels, it is expressed in “water column inches” i.e. 11 w.c.i. Higher pressures are expressed
in terms of the force exerted against a square inch of area, for example, 125 lbs. per square inch (125 psi).
1 water column inch = 50 oz./sq. in. 11 water column inches = 6.35 oz./sq. in.
11 water column inches = 4 lb./sq. in. 1 lb./sq. in. = 27.71 water column inches
1 lb./sq. in. = 2.04” Mercury 1” Mercury = .39 lb./sq. in
1 Std. Atmosphere = 14.73 lbs./sq. in. Capacity in cf/h = Btu/H (Nameplate)
Btu/cu ft (Gas Utility)
Based on 60° Propane Butane
1 Cu. Ft. NG Approx 1,000 Cu. Ft.
Formula C3H8 C4H10
Vaporization Point (°F) -43.7 31.1
Specific Gravity (Vapor) 1.522 2.006
Specific Gravity (Liquid) 0.508 0.584
Lbs. per Gal. (Liquid) 4.23 4.87
BTU per Cu. Ft. (Vapor) 2.563 3.39
BTU per Gal. (Liquid) 91.547 102.032
BTU per Lb. (Liquid) 21.591 21.221
Cu. Ft. per Lb. (Liquid) 8.607 6.53
Cu. Ft. per Gal. (Liquid) 36.45 31.8
Octane Number 125 91
Molecular Weight 44.09 58.12
To Calculate Running Cost: 1,000 BTU = 1 Cu. Ft.
100 Cu Ft. = 1 Therm
1 Therm = 1 Hour
Cost of Gas per Therm = Cost to Run
Example Using Natural Gas
at 50¢ Therm:
400,000 BTU Machine
400 Cu. Ft. (400,000 / 1,000)
4 x 50¢ = $2.00 / Hour to Run ((400 / 100) x cost of gas)

Shark HNG • 9.801-195.0 • Rev. 4/14
17
PRESSURE WASHER OPERATOR’S MANUAL
Spray Nozzles:
Spray nozzles are calibrated for each machine, de-
pending on the flow and pressure of that particular
model. Spray nozzles vary in bore size and angle of
spray. When ordering, please specify size and angle
of nozzle. Nozzle size for each machine is located on
the serial plate.
Unloader Valves:
Unloader valves relieve pressure in the line when a
spray gun is closed. Unloader valves are preset and
tested at the factory before shipping. Occasional ad-
justment of the unloader may be necessary to maintain
correct pressure. For valve adjustment contact your
nearest dealer. Tampering with the factory setting may
cause personal injury and/or property damage, and will
void the manufacturer's warranty.
Winterizing Procedure:
Damage due to freezing is not covered by warranty.
Adhere to the following cold weather procedures when-
ever the washer must be stored or operated outdoors
under freezing conditions.
It is necessary to protect your machine against freezing
when temperatures drop below 32° F. Siphoning a small
amount of antifreeze into the system is recommended.
This is done by pouring a 50-50 mix of antifreeze and
water into the float tank and then siphoning 100%
antifreeze through the detergent line with the pump
on. If compressed air is available, an air fitting can be
screwed into the float tank strainer fitting, and by inject-
ing compressed air, all water will be blown out of the
system.The use of a draft diverter will prevent the wind
chill factor from freezing the coil.
Low Pressure Diagnosis:
Refer to Troubleshooting Chart for low pressure. If the
trouble is found to be either the unloader or the pump,
your next step is to determine which is the problem.
This can be done by eliminating the unloader from
the system and attaching the 50’ discharge hose gun,
wand and nozzle directly to the pump. If high pressure
is developed in this manner, the pump is good and the
unloader needs to be repaired or replaced. If low pres-
sure is still present, then the pump needs repairing.
CAUTION: When using this procedure to test com-
ponents keep the spray gun open at all times.
High Limit Hot Water Thermostat:
For safety, each machine is equipped with an adjustable
thermostat. In the event the temperature of the water
should exceed its operating temperature, the thermostat
will turn the burner off until the water cools.
Pumps:
Use only SAE30 weight non-detergent oil. Change oil
after first 50 hours of use. Thereafter, change oil every
three months or at 500 hour intervals. Oil level should be
checked through use of the dipstick found on the top of
the pump or by the red dot visible through the oil gauge
window. Oil should be maintained at that level.
HEATING COILS
To Check Water Heater Coil for Leaks:
With the main burners “OFF” start the pumping unit
and allow it to run for a few minutes. With a drop light
or flashlight, check the burner compartment. If no leaks
are visible and water is dripping from the coils, then it
is condensation from the flue gases.
Condensation from Heating Coil:
When cold water is being pumped into the water heater
coils and the burners are on, condensation will form on
the coils and drip down into the burner compartment.
This will give the appearance of a leaking coil, particu-
larly on cold humid days.
Deliming Coils:
In alkaline water areas, lime deposits can accumulate
rapidly inside the coil pipes.This growth is increased by
the extreme heat build up in the coil. The best preven-
tion for liming conditions is to use high quality cleaning
detergents. In areas where alkaline water is an extreme
problem, periodic use of Manufacturers Deliming Pow-
der (part #9.556-010.0) will remove lime and other
deposits before coil becomes plugged. (See following
Instructions for use of Deliming Powder.)
Periodic flushing of coils is recommended.
1. Fill a container with 4 gallons of water, then add
1 lb. of deliming powder. Mix thoroughly.
2. Remove nozzle from spray gun assembly and put
spray gun into container. Secure the trigger on the
spray gun into the open position.
3. Attach a short section (3-5 ft.) of garden hose to
machine to siphon solution from an elevated con-
tainer, or add mixture to the float tank. Turn pump
switch on allowing solution to be pumped through
coils and back into the container. Solution should
be allowed to circulate 2-4 hours.
4. After circulating solution, flush entire system with
fresh water. Reinstall wand assembly to spray
gun.
MAINTENANCE & SERVICE

Shark HNG • 9.801-195.0 • Rev. 4/14
OPERATOR’S MANUAL PRESSURE WASHER
18
Gas Valve Adjustment
98011950-25
ON/OFF
Switch
Line to Pilot
Light
Outlet
View
Manifold Pressure
Adjustment Screw
Under Cap
Inlet
View
Line to
Pilot
Light
Gas Valve Regulator Adjustment:
(See Fig. 5)
Adjustment of the built-in regulator isn’t normally nec-
essary, since it is preset at the factory. However, field
adjustment may be accomplished as follows:
1. Attach manometer at both inlet and outlet pressure
ports.
2. Remove manifold pressure adjustment screw cap.
3. With small screwdriver, rotate manifold pres-
sure adjustment screw clockwise to increase or
counterclockwise to decrease gas pressure.
4. Replace manifold pressure adjustment screw cap.
Figure 5
Pilot Burner Adjustment:
1. Remove pilot adjustment cap.
2. Adjust pilot key to provide properly sized flame.
3. Replace pilot adjustment cap.
Rupture Disk:
If pressure from pump or if thermal expansion should
exceed safe limits, the rupture disk will burst, allowing
high pressure to be discharged through hose to ground.
When the disk ruptures, it will need to be replaced.
PROPANE GAS (Vapor Fuel Only)
General Safety Precautions:
Have a qualified gas service person assist in any gas
burner installation or service. Few maintenance people
or mechanics are knowledgeable in gas controls or
related safety practices. Since propane gas is heavier
than air, unburned propane gas will gravitate to the floor
rather than rise out of the stack. Hence, adequate floor
space and good ventilation are especially important with
propane systems.
MAINTENANCE & SERVICE
Gas Pressure Requirements:
All propane fired machines operate on gas vapor only.
They are designed to operate at a pressure of 11
w.c.i. (between 1/3 and 1/2 of one PSI), and are often
operated at even higher pressures when extra heat is
needed, please see Installation Instructions.
Exterior regulators are needed to control the system.
Propane bottles are not included with the machine.
A high pressure regulator should be installed on the
propane bottle and a low pressure regulator attached
to the pressure washer.
Propane Cylinder Capacity:
An important consideration with propane systems is the
capacity of the supply cylinder relative to the needs of
the burner. The burner operates on propane as a gas.
As gas is used from the propane cylinder, the liquid in
the cylinder boils to maintain gas pressure.This boiling
process cools the liquid, and in a heavy, continuous-
demand situation, the liquid temperature can fall to
the point at which it cannot provide gas as rapidly as
is needed. In this case, it may be necessary to warm
the propane cylinder by directing a warm spray, not
over 120°, on the cold cylinder, or by manifolding two
propane bottles together to increase total vaporization
capacity. It is recommended that a minimum 100 lb.
propane bottle be used on the machine, depending on
the length of running time desired.
BURNER FEATURES
Operated Automatic Valve:
This machine is equipped with a thermopile self-pow-
ered combination gas control. This system is designed
as a constant burning pilot. Lighting of the pilot is ac-
complished by manually lighting the pilot. A thermostat
and flow switch control the main solenoid valve.
Care of Main Burner:
Because of condensation from the heater coils dripping
down on the burners, scale buildup may occur in the
burner jet orifices.
1. TO REMOVE BURNER MANIFOLD FROM
WATER HEATER COIL:
Turn off the gas at the main burner by turning the
knob to the “OFF” position on the gas valve and
main gas supply.
Disconnect the pilot and ignition lines from the
gas valve. Disconnect union in main burner line.
(Remove the nuts from the U-bolts, item 21 on
page 31). Slide burner manifold out through shell
opening.

Shark HNG • 9.801-195.0 • Rev. 4/14
19
PRESSURE WASHER OPERATOR’S MANUAL
98011950-27
2 Lead
Thermopile
Connections
Pilot 2CH-2 or
Equivalent
To Burner
Flow Switch
Gas Valve
Ignitor
2 Lead Thermopile
(Equivalent to CP-2)
2. TO CLEAN BURNER JETS:
Select proper size drill for type of gas involved. Use
vise to hold drill and to ream out each jet orifice.
If the water heater will be exposed to freezing weather,
an antifreeze solution should be circulated through the
coils by whatever means are available for the particular
system the water heater is used on.
BURNER TROUBLESHOOTING
Millivolt System Check:
This machine has a thermopile self-powered combina-
tion gas control. Before checking the millivolt system,
the following operations should be performed and
observations made:
1 . Inspect system for proper wiring.
2. The switch leads and all wire connections should be
cleaned and tightened to eliminate all unnecessary
resistance.
3. Clean and/or adjust pilot for maximum flame im-
pingement on the thermopile.
4. If pilot will not remain lit when gas cock dial is re-
leased, check automatic pilot (Step D).
MAINTENANCE & SERVICE
The millivolt system and individual components may
be checked with a DC millivolt meter having a 0-1000
MV range. Conduct each check as shown in the chart
below by connecting the meter test leads to terminals
as indicated. All readings are closed circuit.
A. Complete Millivolt System Check
(“A” Reading = Switch contacts CLOSED - Gas
Cock Dial “ON” - Main burner should come ON).
1. If the reading is more than 100 millivolts and the
automatic valve still does not come on, replace
the automatic valve operator.
2. If the closed circuit reading (“A” Reading) is
less than 100 millivolts, determine cause for low
reading - proceed as follows:
B. Thermopile Output Reading Check
(“B” Reading = Switch contacts OPEN - Main
burner OFF).
If the minimum 250 millivolt reading is not ob-
tainable, readjust pilot for maximum millivolt
output. If millivolt reading is still below minimum
specified, replace thermopile.
C. System Resistance Check
(“C” Reading = Switch contacts CLOSED - Gas
Cock “ON” - Main burner should be ON)
If the “C” Reading is more than that specified
for the system being checked, this indicates the
resistance in the system is excessive and must
be reduced. To correct:
Check
Test To Test
Connect
Meter
Leads To
Terminals
Switch
Flow &
Burner
Contacts
Meter
Reading
Should Be
A Complete
System
2 & 3 Closed 100 MV or
More
BThermopile
Output
1 & 2 Open Greater
than 250
C System
Resistance
1 & 3 Closed Less than
35
D Auto/Pilot
Dropout
1 & 2 Open Between
120 - 30
MV
98011950-26
TH3 TH/PP1
PP2

Shark HNG • 9.801-195.0 • Rev. 4/14
OPERATOR’S MANUAL PRESSURE WASHER
20
MAINTENANCE & SERVICE
a. Clean and tighten switch leads and connec-
tions.
b. Shorten switch lead wires and/or replace
with heavier gauge wire.
c. Cycle switch rapidly to clean contacts.
D. Automatic Pilot Dropout Check
1. Hold gas cock dial depressed in pilot position
until maximum output is observed.Then extin-
guish pilot and observe meter.
2. Dropout of automatic pilot magnet (sound
should be audible) should occur between 120
millivolts and 30 millivolts. If dropout occurs
outside these limits, change the automatic pilot
magnet assembly.