Shark BG-3020 Service manual

SHARK PRESSUREWASHERS ■ 4275 N.W. Pacific Rim Blvd. ■ Camas,WA 98607 ■ USA
For technical assistance or the Shark Dealer nearest you, call 1-800-771-1881.
MODEL: BG
OPERATING INSTRUCTION
AND PARTS MANUAL
■ BG-3020 ■ BG-3025 ■ BG-3030
■ BG-3525 ■ BG-3530 ■ BG-3535 ■ BG-5030

2
MACHINE SPECIFICATIONS
Shark BG Manual • Form #97-6125 • Revised 5/03
●●
●●
●PumpVolume At Pump Head:
BG-3020 3.0 GPM
BG-3025 2.8 GPM
BG-3030 3.0 GPM
BG-3525 3.6 GPM
BG-3530 3.5 GPM
BG-3535 3.3 GPM
BG-5030 4.8 GPM
●●
●●
●Pump Pressure At Pump Head:
BG-3020 2000 PSI
BG-3025 2500 PSI
BG-3030 3000 PSI
BG-3525 2500 PSI
BG-3530 3000 PSI
BG-3535 3500 PSI
BG-5030 3000 PSI
● ●
● ●
● Machine Dimensions: BG-3020 Length = 39" Width = 31" Height = 35"
BG-3025 Length = 39" Width = 31" Height = 35"
BG-3030 Length = 39" Width = 31" Height = 35"
BG-3525 Length = 39" Width = 31" Height = 35"
BG-3530 Length = 39" Width = 31" Height = 35"
BG-3535 Length = 39" Width = 31" Height = 35"
BG-5030 Length = 39" Width = 31" Height = 35"
● ●
● ●
● ShippingWeight:
BG-3020 255 Lbs.
BG-3025 255 Lbs.
BG-3030 255 Lbs.
BG-3525 255 Lbs.
BG-3530 255 Lbs.
BG-3535 255 Lbs.
BG-5030 255 Lbs.

3
CONTENTS
Shark BG Manual • Form #97-6125 • Revised 5/03
SERIAL NUMBER:
DATE PURCHASED:
FOR SALES AND SERVICE, PLEASE CONTACT:
Introduction............................................................. 4
Machine Safety.................................................... 4-5
Pre-Operation Check.............................................. 5
Set-Up Procedures ................................................. 5
ComponentIdentification ........................................ 6
Operating Instructions ............................................ 7
Shut Down Procedures........................................... 7
GeneralWashingTechniques ................................. 7
HowTo Use the Detergent Injector ......................... 8
ExplodedView, Models 3020, 3025 ...................... 9
ExplodedView, Parts List ................................ 10-11
ExplodedView All Models Except 3020, 3025 .... 12
ExplodedView, Parts List ................................ 13-14
Hose & Spray Gun Assembly (All Models)............ 15
Troubleshooting ............................................... 16-17
PreventativeMaintenance .................................... 18
Oil Change Record ............................................... 18
Storage................................................................. 19
Warranty

4 BG SERIES PRESSUREWASHER OPERATOR’S MANUAL
Shark BG •97-6125 • Rev. 5/03
INTRODUCTION
Thank you for purchasing a Shark Pressure Washer.
This manual covers the operation and maintenance of
the BG-302031, BG-302531, BG-352531, BG-353031,
BG-353531, BG-503021, BG-302037, BG-302537,
BG-352537, BG-353037, BG-353537, BG-303077 and
BG-503027 washers. All information in this manual is
based on the latest product information available at the
time of printing.
Shark reserves the right to make changes at any time
without incurring any obligation.
The BG Series was designed for maximum
use of 8 hours per day, 5 days per week.
Owner/User Responsibility:
The owner and/or user must have an understanding of
the manufacturer’s operating instructions and warnings
before using this Shark pressure washer.Warning infor-
mationshould be emphasizedandunderstood.Ifthe op-
eratorisnot fluentinEnglish,the manufacturer’s instruc-
tions and warnings shall be read to and discussed with
theoperatorin the operator’snativelanguage bythe pur-
chaser/owner, making sure that the operator compre-
hends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’instructions.
Theoperatormustknowhowto stop themachine quickly
and understand the operation of all controls.Never per-
mitanyonetooperatethe enginewithout properinstruc-
tions.
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
serial number.
MACHINE SAFETY
CAUTION:To reduce the riskof in-
jury, read operating instructions
carefully before using.
1. Read the owner's manual thor-
oughly.Failure tofollowinstruc-
tions could cause malfunction
of the machine and result in
death,seriousbodilyinjuryand/
or property damage.
2. All installations must comply with local codes.Con-
tact your electrician, plumber, utility company or the
selling distributor for specific details.
WARNING: Risk of asphyxiation
—Use this product only in a well
ventilated area.
3. Avoid installing machines in
small areas or near exhaust
fans.Exhaust contains poison-
ous carbon monoxide gas;
exposure may cause loss of
consciousness and may lead
to death. It also contains
chemicalsknown,incertain quantities,tocausecan-
cer, birth defects or other reproductive harm.
WARNING: Flammable liquids
cancreatefumes which can ignite
causing property damage or se-
vere injury.
WARNING: Risk of fire —Do not
add fuel when the product is
operating.
WARNING: Risk of explosion —
Do not spray flammable liquids.
4. Do not place machine near flammable objects as
the engine is hot.
5. Allowengineto coolfor2 minutesbeforerefueling.If
any fuel is spilled, make sure the area is dry before
testing the spark plug or starting the engine. (Fire
and/or explosion may occur if this is not done.)
Refuel gasoline engines on mobile or portable
equipment:
a. outdoors;
b. with the engine on the equipment stopped;
c. with no source of ignition within 10 feet of the
dispensingpoint; and
d. withanallowancemadeforexpansionofthefuel
should the equipment be exposed to a higher
ambienttemperature.
In an overfilling situation, additional precautions are
necessary to ensure that the situation is handled in
a safe manner.
WARNING: High pressure stream
of water that this equipment can
produce can pierce skin and its
underlying tissues, leading to
serious injury and possible
amputation.
WARNING
HIGH PRESSURE
SPRAY CAN PIERCE
SKIN ANDTISSUES.
WARNING
RISK OF FIRE.
DO NOT ADD FUEL
WHEN OPERATING
MACHINE.
WARNING
RISK OF
ASPHYXIATION.
USE ONLY IN A WELL
VENTILATED AREA.
WARNING
READ OPERATOR’S
MANUAL
THOROUGHLY
PRIORTO USE.
CAUTION

BG SERIES PRESSUREWASHER OPERATOR’S MANUAL
5
Shark BG •97-6125 • Rev. 5/03
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 safety devices
must be worn.
6. Eyesafetydevicesandfootpro-
tection must be worn when us-
ing this equipment.
7. Highpressuredevelopedbythesemachineswillcause
personal injury or equipment damage. Use caution
when operating. Do not direct discharge stream at
people, or severe injury or death will result.
8. Never make adjustments on machine while in op-
eration.
9. Do not operate with spray gun in the off position for
extensive periods of time as this may cause dam-
age to the pump.
10. The best insurance against an accident is precau-
tion and knowledge of the machine.
11. Shark will not be liable for any changes made to our
standard machines, or any components not pur-
chased from Shark.
12. Read engine safety instructions provided.
WARNING: Keep water spray
away from electrical wiring or fa-
tal electric shock may result.
13. Never run pump dry or leave
spray gun closed longer than
5 minutes.
14. Do not allow children to oper-
atethe pressurewasheratany
time.
15. Inletwater supplymustbe cold
and clean fresh water.
PRE-OPERATION CHECK
❑Checkpump oillevel.(Use SAE30Wnon-detergent
oil).Dipstick is located on top of pump.
❑Cold water supply (minimum 6 GPM, 5/8", 20 PSI)
❑Hose, wand, nozzle (nozzle size per serial plate)
❑Water filter (intact, non restrictive)
❑Fuel (unleaded 86 or higher octane)
❑Open spray gun to relieve pressure before starting.
❑Engine oil (SAE 10W30)
SET-UP PROCEDURES
1. Attach a 5/8" garden hose to inlet connector. Mini-
mum flow should be 6 GPM.
2. Attach high pressure hose to discharge nipple using
quickcoupler. Lockcouplersecurelyintoplacebypull-
ing back coupler collar and inserting it onto discharge
nipple, then pushing collar forward to lock in place.
WARNING
PROTECTIVE
EYEWEAR AND
CLOTHING MUST
BE WORN.
WARNING
KEEP WATER
SPRAY AWAY FROM
ELECTRICAL
WIRING.
Pressure
Hose
Filter
Garden
Hose
Inlet Connector
Collar Discharge
Nipple
Dipstick
Filler Cap/Dipstick
Upper Limit
Lower Limit
3. Attach variable pressure wand to spray gun using
teflon tape on threads to prevent leakage.
4. Attach swivel connector on discharge hose to spray
gun using teflon tape on threads.
5. Remove oil plug on top of pressure washer pump
and replace with dipstick supplied. (This may be
installed from the factory.)
6. Check oil level on sight glass on back of pump. Oil
should be visible one half way up sight glass (30W
non-detergent).
7. Fill gasoline tank and check engine oil.
Notice: Running the engine with a low oil level can
cause engine damage.

6 BG SERIES PRESSUREWASHER OPERATOR’S MANUAL
Shark BG •97-6125 • Rev. 5/03
COMPONENT IDENTIFICATION
Pump — Develops high pressure.
Starter Grip — Used for starting the engine manually.
Spray Gun — Controls the application of water and de-
tergentontocleaning surfacewithtriggerdevice.Includes
safety latch.
Detergent Injector — Allows you to siphon and mix
detergents.
HighPressure Hose — Connect oneendtowaterpump
discharge nipple and the other end to spray gun.
Pump Protector — Cycles water through pump when
water reaches 140°F.
Note: If trigger on spray gun is released for more
than2minutes,waterwillleakfromvalve.Warmwater
will discharge from pump onto floor. This system
prevents internal pump damage.
Spray
Gun
High Pressure
Hose
Wand w/Side
Grip
Trigger
Water
Supply Hose
(not included)
Wand
Coupler
Detergent
Filter
Pressure Nozzle
Soap Nozzle
Soap
Nozzle
High
Pressure
Nozzles Unloader
Pump
ON-OFF
Switch
Starter
Grip
Detergent
Bucket
(not included)
Detergent
Hose
Inlet
Connector
Detergent
Injector
Quick Coupler

BG SERIES PRESSUREWASHER OPERATOR’S MANUAL
7
Shark BG •97-6125 • Rev. 5/03
Fuel Valve Lever
ON
OFF
Choke Lever
CLOSED OPEN
OPERATING INSTRUCTIONS
1. Read provided engine manual warning and operat-
ing instructions.
2. Pull wand coupler collar
back and insert pressure
nozzleintocouplerthense-
cure by pushing collar for-
ward to lock.
3. Turn on waterat faucetand
squeeze spray gun trigger
allowing water to flow until a steady stream comes
out of wand.
4. Move the fuel valve lever
to the ON position. Turn
the fuel valve lever to the
OFF position after stop-
ping engine.
5. To start a cold engine,
movethe chokeleverto
the CLOSED position.
To restart a warm en-
gine, leave the choke
lever in the OPEN po-
sition.
6. Turn the engine switch to the ON position.
7. Openspraygun beforepulling
the starter grip.
8. Tostartthe engine pullthe
startergrip lightlyuntilyou
feel resistance, then pull
briskly.Return the starter
grip gently.
CAUTION: Pull trigger on spray gun to relieve pres-
sureif machine does not start after one pull of starter
grip.
CAUTION:Small engines may kick back.Do not hold
starter grip tightly in hand.
Starter Grip
Engine Switch
9. Withthe spraynozzle pointedaway from youorany-
one else, press the trigger on the spray gun to ob-
tain pressurized spray.
SHUTDOWN PROCEDURES
1. If a detergent injector was used, flush all lines with
clean water to remove soap residue.
2. Turn off engine.Turn off water supply.
3. Squeeze spray gun trigger to relieve any pressure.
4. Disconnect water supply hose from washer.
CAUTION: Do not allow pump to run without water.
5. Disconnect all hoses to allow water to drain.Protect
from freezing.
CAUTION: Do not allow pump to run longer than
3 minutes without water. Disconnect all hoses to
allow water to drain.
CAUTION: With machine off, open spray gun to
release pressure before removing discharge hose.
GENERALWASHING
TECHNIQUES
Testpressure andspraypattern on hard surface(i.e.ce-
ment) to gauge distance and impact of water spray.
Hold spray nozzle
approximatelyone
foot from surface
beingcleaned.For
bestsurfaceclean-
ingaction,sprayat
slight angle.
To change spray
nozzle for a different pattern it is recommended that you
turnoff engineand squeezespraygun trigger to release
hosepressure.Pullbackon quickcoupler atend ofwand
and exchange nozzle. Make sure nozzle is seated se-
curely.Restart engine.
Usethedetergent injector toapplydetergent. Washfrom
the bottom and work up.Allow the detergent to set 5-10
minutes on surface.Rinse from top down.
NOTE: If pressure washer is running and not being
used for more than 2 minutes, turn off engine.
Wand
Spray Nozzle
Quick Coupler
1 Foot
Wand

8 BG SERIES PRESSUREWASHER OPERATOR’S MANUAL
Shark BG •97-6125 •Rev. 5/03
HOWTO USETHE
DETERGENT INJECTOR
WARNING:Some detergents may
be harmful if inhaled or ingested,
causing severe nausea, fainting
or poisoning. The harmful ele-
ments may cause property dam-
age or severe injury.
Themachine can siphonandmixde-
tergents with the use of Shark's de-
tergent injector kit.
1. Turn engine and water supply off. Squeeze spray
gun to relieve pressure before attaching detergent
injector.
Spray
Gun
Detergent
Injector
Water
Inlet
Quick Coupler
Collar
Trigger
Detergent
Pick-up Tube
Soap Nozzle
High Pressure
Hose
Discharge
Nipple
2. To attach detergent injector between pressure
washer and high pressure hose, pull injector quick
coupler collar back and secure on discharge nipple.
Injectorvalvebody arrow should point indirection of
flow.
3. Connect pressure discharge hose to injector nipple
securing quick coupler by pushing collar towards
nipple.
4. Start machine as outlined in Operating Instructions.
5. Placedetergent pick-uptube intocontainer ofdeter-
gent solution.
6. Open spray gun. Water detergent ratio is approxi-
mately 15 to 1.
7. For clean up, place detergent pick-up tube into con-
tainer of clear water and follow steps 5 and 6 to pre-
ventdetergentdeposits from damaging the injector.
High Pressure Nozzle
Wand
w/Side Grip
WARNING
SOME DETERGENTS
MAY BE HARMFUL
IF INHALED OR
INGESTED

BG SERIES PRESSUREWASHER OPERATOR’S MANUAL
9
Shark BG •97-6125 •Rev. 5/03
EXPLODED VIEW
3020, 3025 MODELS
3
2
11
13 15
12 34
14
1
48
65
4
78
9
22
21
33
10
47
24
32
30
27
39
25
26
23
38
24
22
28
29
24
17
18
19
33
35
31
35
35
1650
49
24
25
39
36
24
25
45
43 20
41
40
44
47
46
33
42
37
51
24

10 BG SERIES PRESSUREWASHER OPERATOR’S MANUAL
Shark BG •97-6125 •Rev. 5/03
ITEM PART NO. DESCRIPTION QTY
1 5-0104 Engine, Honda, GX160K1QX2,
5.5 HP (302031, 302037) 1
5-01041 Engine, Honda, GX200K1QX2,
6.5 HP (302531, 302537) 1
2 5-23123 Pump, General, TX1812
(302031, 302531) 1
5-1625 Pump, Legacy, WML-2540
(302037, 302537) 1
3 5-3025 Unloader, PA 8GPM @ 3650 PSI,
General Pump
(302031, 302531) 1
5-3151 Unloader, APR.S 3000
Legacy Pump (302037, 302537)1
4 2-1007 Nipple, 1/2" Hex Legacy Pump
Only (302037, 302537) 1
5 2-0031 Elbow, 3/8" 1
6 2-2006 Nipple, 3/8" x 3/8" NPT ST Fem,
Legacy Pump 1
2-2007 Nipple, 3/8" x 3/8" NPT ST Male,
General Pump 1
7 2-0028 Elbow, 1/2", 90°, Female, Steel
(302037, 302537) 1
2-0032 Elbow, 1/2", Street, Steel
(302031, 302531) 1
8 2-1923 Strainer, 1/2" PA, Inline Plastic 1
9 2-10942 Swivel, 1/2" MP x 3/4" GHF
w/Strainer 1
10 95-07104710 Assy, Pump Slider
w/Belt Guard Plate 1
11 5-40408001 Pulley, BK 80 H 1
12 5-604032 Belt, BX32 1
13 5-40402775 Pulley, BK27 x 3/4", Bore
(302037, 302537) 1
5-40403401 Pulley, BK34 x H (302031) 1
5-40403201 Pulley BX32 x H (302531) 1
14 5-511075 Bushing, H x 3/4"
(302031, 302531) 1
15 5-512024 Bushing, H x 24 mm 1
16 2-011732 Belt Guard Plastic 1
17 4-0303 Wheel & Tire Assy, 4" Steel Rim
w/Tube 2
18 2-01403 Bushing, Snap, 5/8",
P/N 2123 2
ITEM PARTNO. DESCRIPTION QTY
19 95-07200025 Frame, Assy 1
20 95-07104032 Spacer, Wheel 1
21 95-07102312 Axle, 19.25" 1
22 90-1020 Bolt, 3/8" x 2", NC HH 4
23 95-07104992 Bracket, Adjustable 1
24 90-4002 Washer, 3/8", SAE, Flat 14
25 90-2002 Nut, ESNA, NC 8
26 90-1016 Bolt, 3/8" x 1", NC HH 2
27 2-01041 Pad, Soft Rubber, 50 Duro 2
28 90-1017 Bolt, 3/8" x 1-1/4", NC HH 2
29 90-1009 Bolt, 5/16" x 1-1/2", NC HH 4
30 95-07200021 Handle, Assy, Grab, Red 1
31 2-0103 Grommet, Rubber,
Nozzle Holder 5
32 4-12804000 Nozzle, SAQCMEG, 0004, Red
(3020) 1
4-12804015 Nozzle, SAQCMEG, 1504,
Yellow (3020) 1
4-12804025 Nozzle, SAQCMEG, 2504,
Green (3020) 1
4-12804040 Nozzle, SAQCMEG, 4004,
White (3020) 1
4-16540 Nozzle, Compl., QCEM-6540
Brass 1
4-12803500 Nozzle, SACQMEG, 0003.5,
Red (3025) 1
4-12803515 Nozzle, SACQMEG, 1503.5
Yellow (3025) 1
4-12803525 Nozzle, SACQMEG, 2503.5
Green (3025) 1
4-12803540 Nozzle, SACQMEG, 4003.5
White (3025) 1
33 90-20041 Collar, 5/8" Bore Shaft (3010) 3
34 90-1002 Bolt, 1/4" x 1" NF HH 4
35 90-19710 Screw, 1/4" x 3/4" HH NC,
Whiz Loc 3
36 11-0309 Label, Nozzle, Op., Warning 1
37 2-300812 Pump Protector, 1/4", 145°1
38 90-102751 Bolt, 1/2" x 3-1/2" NC HH Tap,
All Thread 1
39 90-3096 Washer, 1/2" Flat 3
40 10-02025A Label, "Hot" 1
41 10-020209 Label, "Danger" 1
SHARK BG EXPLODED VIEW
3020, 3025 MODELS