. 
.. 
__ 
, 
OPERATION 
Before starting, be sure to read the safety warnings and 
Startup 
setup instructions. 
Check the oil'and gasoline levels daily. 
Turn on the water supply. 
Trigger the gun to release any back pressure 
Set the choke and open the fuel valve. 
NOTE: 
For easier starting, hold the gun trigger open 
while pulling the rope. 
Put your~foot on the frame or wheel to steady the unit 
when you pull the starter rope. Hold the gun in your lefi 
hand with the trigger open while starting the engine. 
Grasp the starter rope grip and rapidly pull out the cord 
choke opened slightly. When the engine  starts, im- 
two 
or three feet (1 m). Repeat if necessary with the 
mediately release the gun trigger.  Open the .choke 
gradually. 
CAUTION 
the pump 
will 
result. Always be sure watersupply 
Never run the cleaning unit dry. Costly damage to 
is completely turned on before operating. 
Inspect 
all 
connections for any leaks.  Tighten if 
necessary. 
Cleaning 
For Hydra-Clean technique, see the Chemical Injector 
manual, 801 -645. 
For abrasive cleaning, see the Water Sandblaster 
manual, 
801 
-646. 
Follow these precautions when removing and in- 
WARNING 
stalling nozzles: 
1. 
. 
Shut 
off 
the cleaning unit and trigger the gun 
to relieve pressure. Engage the trigger safety. 
2. 
Keep. the nozzle and the tube pointed away 
from you and everyone else. 
3. 
Do 
not put your hand over the tip to push the 
keep your fingers away from the tip. 
nozzle into place. Grasp 
it 
from 
the 
side and 
4. 
Do 
not let anyone else touch the spray valve 
while you are cleaning nozzles. 
5. 
Be sure 
the 
slip ring 
is 
pushed forward to lock 
the nozzle in place before triggering the spray 
gun. 
When unit is not 
in 
use, turn 
off 
water supply 
Shutdown and Care 
Of 
Unit 
When shutting .down for the day or weekend, shut 
off 
unit, shut 
off 
water supply valve, and trigger gun  to 
release pressure. Wipe off the unit with a damp rag. 
- 
CAUTION 
Shut 
off 
cleaning unit when not actuallyspraying, 
for longer pump life. The pump 
will 
overheat if left 
running for over 
10 
minutes without spraying. 
often 
as 
necessary, 
at 
least daily. 
Do 
not operate the 
Check the filter screen in the water inlet connection as 
unit with the inlet and filter screen removed. 
engine speed. Changing these settings may cause exces- 
DO 
NOT try to adjust the unloader valve or change the 
and increased wear on parts and 
will 
void the warranty. 
sive pressure, intermittent unloader operation, wasted fuel 
PUMP 
MUST 
NOT BE RUN DRY and must be drained 
and store the unit where 
it 
will not be  subjected to 
I 
of water prior to exposure to freezing temperatures. Use 
freezing temperatures. If water does freeze in the unit, 
thaw before trying to start. A 
50% 
anti-freeze solution 
may be pumped prior to cold weather storage. 
Use only spray tips that are matched to the unit to avoid 
excessive cycling and wear of the unloader valve. See 
ACCESSORIES. 
I 
temperature change may  crack the ceramic 
plungers. 
I 
Do 
not pump caustic materials. 
Before extended storage, flush the pump with light oil. 
Avoid dragging hose over an abrasive surface such 
as 
cement. This causes ex.cessive wear and shorter hose 
life. 
Clean the intake line strainer daily. 
Lubrication and Care 
Change the engine oil after every 
100 
hours of operation. Drain oil with.engine warm. Engine requires 3 
pints (1.4 liters) 30W oil. See separate instruction 
manual for maintenance procedures. 
Fill pump crankcase to dot on oil.gauge window with 
34 
oz. (1.0 liters) of crankcase oil (part no. 801-144) 
or equivalent SA€ 
40 
weight hydraulic oil with anti- 
. 
wear and rust inhibitor additives. Change initial fill 
after 
50 
hour running period.  Change oil every 
3 
months or at 
500 
hour intervals. 
~  ~~  ~ 
valve. 
Altering or adjusting unloader 
willnot 
increase 
performance of unit, 
,. 
st be performed  only by  ,.. ~ 
4 
801-643