
CONTENTS
The model and serial numbers will be found on a decal at tached 
to the pressure washer. You should record both serial number and 
date of purchase and keep in a safe place for future ref er ence.
96-718, 97-721, 97-722, 97-723 • REV. 1/05
Applying Detergent and General Operating Techniques
 
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
PRESSURE WASHER 
  PRESSURE WASHER    
OPERATOR’S MAN U AL  
Avoid installing ma chines in 
small areas or near ex haust 
fans. Ex haust con tains poi-
 son ous car bon mon ox ide gas; 
con scious ness and may lead to
death. It also con tains chemicals known, in cer tain 
quan ti ties, to cause can cer, birth de fects or oth er 
Allow engine to cool for 2 minutes before re fu el ing. If 
any fuel is spilled, make sure the area is dry be fore 
test ing the spark plug or start ing the en gine. (Fire 
and/or ex plo sion may oc cur if this is not done.)
When refueling gasoline engines on mo bile or 
with the engine on the equip ment stopped;
with no source of ig ni tion within 10 feet of the 
with an allowance made for ex pan sion of the 
fuel should the equip ment be exposed to a 
 cau tions are nec es sary to en sure that the sit u a tion 
pro duce can pierce skin and its 
Thank you for purchasing a this pressure washer.
All in for ma tion in this man u al is based on the lat est 
any time with out incurring any obligation.
This machine was designed for max i mum use 
of 8 hours per day, 5 days per week.
The owner and/or user must have an un der stand ing of 
the manufacturer’s operating instructions and warnings 
should be emphasized and understood. If the op er a tor 
and warnings shall be read to and dis cussed with 
the op er a tor in the operator’s native lan guage by the 
The operator must know how to stop the machine 
quick ly and un der stand the operation of all controls. 
This manual should be considered a permanent 
When ordering parts, please specify model and
thor ough ly. Fail ure to fol low 
 func tion of machine and re sult 
and/or prop er ty dam age.
All installations must com ply 
with local codes. Con tact your elec tri cian, plumb er, 
This machine has been pro vid ed with Warn ing and 
these decals are removed or be come damaged 
they should be re placed. Contact your dealer for 
OPERATOR’S MANUAL   
CAUTION
CAUTION
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
OPERATOR’S MAN U AL 
slopes and drainage. This will reduce the pos si bil i ty 
of a fall due to slippery surface.
The best in sur ance against an accident is pre-
 cau tion and knowl edge of the ma chine.
spray gun closed long er than 
 er ate the pressure wash er at 
par ti cles to become air borne and 
 son al in ju ry, eye safe ty de vic es 
cause per son al in ju ry or equip ment dam age. Use 
cau tion when op er at ing. Do not di rect dis charge 
stream at peo ple, or se vere in ju ry or death will 
of the pres sure washer when starting gas o line 
When applying detergents, fol low the safety rules 
on the de ter gent label.
 
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
PRESSURE WASHER 
  PRESSURE WASHER    
OPERATOR’S MAN U AL  
— Develops high pressure.
— Used for starting the engine man u al ly.
 — Controls the application of water and 
de ter gent onto cleaning surface with trigger device. 
 — Allows you to siphon and mix 
 — Must be connected to the spray gun. 
 — Connect one end to water 
 If trigger on spray gun is released for more 
than 2 minutes, water will leak from valve. Warm 
water will dis charge from pump protector onto  oor.  
This sys tem pre vents internal pump dam age.
OPERATOR’S MANUAL   
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
OPERATOR’S MAN U AL 
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
PRESSURE WASHER 
 PRESSURE WASHER       
OPERATOR’S MAN U AL  
 Attach the high pres sure 
 Release the coupler col lar 
and push the nozzle until the collar 
clicks. Pull the nozzle to make sure 
 Connect the high pres sure 
 Pull the spring-load ed col-
 lar of the wand coupler back to in sert 
your choice of pres sure noz zle.
debris, then connect garden hose 
pump dam age will result.
oil level in oil window (if equipped).  
OPERATOR’S MANUAL     
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
OPERATOR’S MAN U AL 
 Check engine oil level. Oil level should be level with the bottom 
of the oil  ller neck. Be sure the ma chine is level when checking the oil 
 Im prop er oil levels will cause low oil sensor to shut 
as this will cause engine damage.
to the cold water source and turn 
wa ter on completely. Never use 
 Rotate the fuel shut-off valve to the "On" po-
 si tion. Slide the fuel valve lever to the "ON" position.  
When the engine is not in use, leave the fuel valve in 
steady  ow of water to emerge from 
 lead ed gasoline. Do not use leaded 
choke knob in). Push the choke knob to the "Closed" 
 
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
PRESSURE WASHER 
 Turn the engine switch to "ON" position.
 Pull the starter grip. If the engine fails to start 
after 2 pulls, squeeze the trigger gun to release pres sure 
and repeat step. Return start er gently. After the en gine 
warms up enough to run smoothly, move choke to run 
pull starter grip tightly in hand.
safe ty latch on the spray gun 
The  ve color-coded quick con nect 
widths from 0° to 45° and are easily ac-
cessible when placed in the con ve nient 
on the front of the ma chine. 
 For a more gentle rinse, se lect 
the white 40° or green 25° noz zle. To 
scour the surface, select the yellow 15° 
or red 0° nozzle. To apply de ter gent 
select the black noz zle.
 High pressure nozzle must be in sert ed at end of wand to obtain 
OPERATOR’S MANUAL     
NOZZLES
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
OPERATOR’S MAN U AL 
 sea, fainting or poi son ing. The 
prop er ty dam age or severe 
on machine. Connect high pressure hose to in jec tor 
with quick coupler. (Check to make sure locking cou pler 
sleeves are in proper position before ap ply ing wa ter 
spe ci  cal ly for pres sure washers. 
 age the pump. Pre pare detergent 
so lu tion as required by the man u -
fac tur er. Fill a container with pres-
 sure washer de ter gent. Place the 
 lter end of detergent suction hose 
 With safety latch on spray 
 De ter gent can not be ap plied using red, yellow, 
 ning, pull trig ger to op er ate ma-
 chine. Liq uid detergent is drawn 
water. Apply de ter gent to work 
area. Do not al low de ter gent to 
cir cu lat ing water in the pump can reach high tem per a-
 tures. When the water reach es this tem per a ture, the 
 charg ing the warm water onto the ground. This ther mal 
de vice pre vents internal dam age to the pump.
 ter gent suc tion tube di rect ly into clean ing solution and 
ap ply to sur face at low pressure (for best re sults, lim it 
your work area to sec tions ap prox i mate ly 6 feet square 
and al ways ap ply de ter gent from bottom to top). Allow 
de ter gent to re main on sur face 1-3 min utes. Do not al-
 low de ter gent to dry on sur face. If sur face appears to 
from clean ing sur face. Use over lap ping strokes as you 
clean and rinse any sur face. For best surface clean ing 
action spray at a slight an gle.
area should be cleaned to test spray pattern and 
dis tance for maximum cleaning results.
the loose paint from the surface.
sur face you plan to clean. High pressure wash a 
small area, then check the surface for damage. If 
Tri-sodium phosphate products
These chemicals will harm the machine and will dam-
Apply safe ty latch to spray gun. Re move black soap 
de sired high pres sure noz zle. 
de ter gent from  ow ing by sim ply re mov ing de ter gent 
si phon hose from bottle.
 
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
PRESSURE WASHER 
 Remove detergent suc tion 
tube from container and insert into 
one gallon of fresh water. Slide noz zle 
for ward for low pressure or to con nect 
spray gun and si phon water for one 
 Turn engine switch to "OFF" 
Turn on the machine for a few seconds, until  re-
 main ing water exits. Turn engine off im me di ate ly.
does not reach freezing temperatures.
When the pres sure washer is not being operated or is 
the spark plug hole, pull the starter grip several 
times and re place the plug. Then pull the starter 
and ex haust valves to prevent rusting of cylinder.
The use of a fuel additive, such 
for mu la tion of fuel deposits during shortage. Such 
ad di tives may be added to the gasoline in the fuel 
tank of the engine, or to the gasoline in a storage 
pos si ble ice from pressure washer hos es, 
car bu re tor. If this de vel ops, the engine may run rough, 
OPERATOR’S MANUAL     
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
 PRESSURE WASHER Troubleshooting Guide
 PRESSURE WASHER  Troubleshooting  Guide
 PRESSURE WASHER  Troubleshooting  Guide
 PRESSURE WASHER  Troubleshooting  Guide
 PRESSURE WASHER  Troubleshooting  Guide
 PRESSURE WASHER  Troubleshooting  Guide
faucet. Inlet hose kinked
Adjust unloader for proper pressure. Install 
Thaw out machine completely, including 
Worn or dirty pump valves
Adjust engine throttle to lower RPM.
A small amount of leaking is 
 
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
PRESSURE WASHER 
  PRESSURE WASHER    
OPERATOR’S MAN U AL  
Vapor lock developed by heat of 
A high pressure nozzle is at-
wand collar clockwise onto the spray gun 
Turn off machine and purge pump by 
squeezing trigger gun until a steady  ow of 
water emerges through nozzle.
OPERATOR’S MANUAL   
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
OPERATOR’S MAN U AL 
This pressure washer was produced with the best avail able ma te ri als and quality craftsmanship. However, you 
as the own er have certain re spon si bil i ties for the correct care of the equip ment. At ten tion to reg u lar pre ven ta tive 
After  rst 50 hours, then every 500 hours or 
Annually if there is any sign of wear
 
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
PRESSURE WASHER 
  PRESSURE WASHER    
OPERATOR’S MAN U AL  
OPERATOR’S MANUAL   
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
OPERATOR’S MAN U AL 
455039E, 455034E, 405037E, 
455039E, 455034E, 405037E, 
 
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
PRESSURE WASHER 
  PRESSURE WASHER    
OPERATOR’S MAN U AL  
Valve, Shut-Off, 1/4 Turn
405039E,455039E, 455034E,  
Washer , Nylon Spacer, 0.656 x 
Assy, Weld, Battery Brkt, CW 
Assy, Weld, Battery Brkt, CW 
Assy. Weld, Cage, CW Black
Assy, Weld, Slider, CW Cage, 
Assy, Weld, Slider, CW Cage, 
Washer, 5/16" FLAT, SAE (343087E,
OPERATOR’S MANUAL   
 

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OPERATOR’S MAN U AL 
Washer, 3/8" (404027,404029)
405039E, 455034E, 455037E, 
Washer, 1/4" FLAT, SAE, Black, 
 Muf er, Exhaust, Briggs 16HP
 Guard, Muf er, Briggs 16HP
 Brace, Muf er Guard (404029, 
 Muf er, De ector, Vanguard
 De ector, Exhaust, Honda 
Adaptor, 1/2 x 1/2 (455037E, 
405037E, 343087E, 404027, 
404029, 455039E, 343089E, 
Washer, 1/4" Flat, SAE, Black
 
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
PRESSURE WASHER 
  PRESSURE WASHER    
OPERATOR’S MAN U AL  
OPERATOR’S MANUAL   
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
OPERATOR’S MAN U AL 
Wheel & Tire Assy, 6" Steel Rim
Washer, 7/16", Lock Split Ring
Washer, Nylon Spacer, 0.656" x 
 Block, Unloader, 3/8" x 3/8" 
 
 

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PRESSURE WASHER 
  PRESSURE WASHER    
OPERATOR’S MAN U AL  
Assy, Weld, CW Cage, Small
Assy, Weld, CW Cage, Small
Adapter, 1/2" Female x 3/8" Male
Adapter, 1/2 x 1/2 (353234, 373534, 
OPERATOR’S MANUAL   
 

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OPERATOR’S MAN U AL 
Wand, Side Grip w/Couplers 47.5"
w/Coupler (405039E, 455039E, 
455034E, 405037E, 455037E)
Wand, SS V.P. Wand, (AL 344) 
w/Coupler, w/Soap Nozzle (353234, 
Wand, V.P. w/Coupler & Nozzle,
X-Series (353237, 373537, 404027, 
405037E, 55037E, 455037E)
 Hose, 3/8" x 50 ft., 1 Wire 
 Hose, 3/8" x 50 ft., 2 Wire Blue, 
w/Coupler (373537, 404027)
Tube, 1/4" x 1/2", Clear Vinyl
455034E, 455037E, 455039E)
0.83" (442539, 353239, 373539, 
373534, 353237, 373537, 343087E, 
 
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
PRESSURE WASHER 
  PRESSURE WASHER    
OPERATOR’S MAN U AL  
OPERATOR’S MANUAL   
 

96-718, 97-721, 97-722, 97-723 • REV. 1/05
OPERATOR’S MAN U AL 
 

WHAT THIS WARRANTY COVERS
 are warranted by SHARK to the original purchaser to be free from defects in materials 
and work man ship under normal use, for the periods speci ed below. This Limited War ran ty is subject to the ex clu sions shown 
All other components, excluding normal wear items as described below, will be warranted for one year on parts. Warranty on 
these parts will be for one year regardless of the duration of the original component manufacturer’s part warranty.
WARRANTY PROVIDED BY OTHER MANUFACTURERS:
tur ers’ local authorized service centers. SHARK cannot provide warranty on these items.
WHAT THIS WARRANTY DOES NOT COVER
This warranty does not cover the following items:
ser vic ing, failure to follow manufacturer’s maintenance instructions, or use of the equipment be yond its stated usage 
spec i  ca tions as contained in the operator’s manual.
Transportation to service center, shop labor charges,  eld labor charges, or freight damage.
WHAT YOU MUST DO TO OBTAIN WARRANTY SERVICE
While not required for warranty service, we request that you register your SHARK pressure washer by re turn ing the completed 
freight prepaid, with proof of purchase, within the applicable warranty period. If the product is per ma nent ly installed, you must 
defect. In most cases, the part must be returned to SHARK freight prepaid with the claim. For warranty service on com po nents 
warranted by other manufacturers, the Authorized Dealer can help you obtain war ran ty service through these man u fac tur ers’ 
ex ceed the purchase price of the product in question. SHARK makes every effort to ensure that all illustrations and spec i  ca tions 
are correct, however, these do not imply a warranty that the product is merchantable or  t for a particular purpose, or that the 
THE WAR RAN TY CONTAINED HEREIN IS IN LIEU OF ALL 
 SHARK does not authorize any other party, including authorized Dealers, to make any rep re sen ta tion or promise 
on behalf of SHARK, or to modify the terms, conditions, or limitations in any way. It is the buyer’s responsibility to ensure that 
the installation and use of SHARK products conforms to local codes. While SHARK attempts to assure that its products meet