Shark Jetters
OPERATOR’S MANUAL
11
SJGDG-3016 & SJGDG-3020 • 8.914-327.0 • REV. 4/12
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®
Detergent Injector
The detergent injector can be attached to the free end of
the ball valve. Do not attach detergent injector to the inlet
side of the pump. Detergents can damage pump.
To use the detergent injector, attach one end of siphon
hose to the injector and put the filter end in the detergent
solution. Be sure the end of the hose is at the bottom of
the container or bucket. Some models have adjustable
valves to control the amount of detergent drawn through
the hose.
Remember: Do not use corrosive material. See warn-
ing previously listed.
Regulating Pressure Unloader
The machine is equipped with a regulating pressure
unloader to prevent pressure overload in the event
that the nozzle is plugged or the ball valve or trigger is
shut off. When the machine is in the bypass mode, the
pump will continue to run. However running in bypass
mode for extended periods will cause damage to the
pump; no more than 5 minutes with the SJGDG-3016
or SJGDG-3020 pumps. Excessive temperatures will
damage the pump and void the warranty.
The machine also comes with thermal overload protec-
tion. When water temperature in pump increases to
140°F
(60°C)
, the thermal relief valve will release hot
water and allow cool water to enter pump from fresh
water supply.
To adjust unloader, loosen lock nut and turn the knob
clockwise to increase pressure and counterclockwise to
decrease pressure.
Caution: Do not overtighten unloader. Tighten lock
nut after adjustments are made.
FREEZE PROTECTION
To protect your machine from severe damage caused by
water freezing inside the components, it is important to
winterize whenever it is subjected to freezing tempera-
tures. The best way to protect the system is to keep it out
of the cold. If the machine is stored outside in freezing
temperatures the following procedures must be followed
to prevent damage to the machine
Model SJGDG-3016
- Flush the system with antifreeze.
To do so, simply attach a short garden hose (not to
exceed 4 feet) to the inlet of the pump and place the
other end into a container of 50/50 mixture of water and
antifreeze Remove the jetter nozzle from the jetter hose.
Turn the machine on to draw antifreeze into the system
When antifreeze flows out the end of the hose, turn the
machine off.
Model SJGDG-3020
- Flush the system with antifreeze.
To do so, simply add two gallons of a 50/50 mixture of
water and anti-freeze solution to the water tank. Remove
the jetter nozzle from the jetter hose and place end of
jetter hose into water tank. Start engine allowing anti-
freeze to flow through the pump and hose back into the
water tank. Turn the engine off and drain water from
inlet water filter and hose connecting filter to water tank
When preparing to operate equipment the next time
capture the anti-freeze in the water tank by placing jetter
hose with nozzle removed into a customer provided con-
tainer and start engine. Upon anti-freeze being depleted
in water tank turn engine off. Antifreeze, if kept relatively
undiluted can be used again and again. Hoses can also
be protected from freezing by using compressed air to
clear them of residual water.
MAINTENANCE
Regular inspection is the key to preventing breakdowns
and prolonging the life of the equipment. Follow this
simple procedure religiously.
DAILY
❑
Check that the water supply is adequate.
❑
Check that the nozzle on the spray wand is not
clogged or worn out.
❑
Check that the PUMP OIL LEVEL is within operating
range on dipstick or sight glass.
❑
Check that the engine FUEL LEVEL is full.
❑
Check that the ENGINE OIL LEVEL is within
operating range on dipstick.
❑
Check the INLET FILTER.
WEEKLY
❑
Check the PRESSURE HOSE for wear and damage.
❑
Damaged hose can be repaired at a local service
dealer or by your equipment dealer.
