
97-6142, 97-6134 • REV. 9/04
OPERATOR’S MANUAL PRESSURE WASHER
12
MAINTENANCE
PREVENTATIVE MAINTENANCE
1. Checktoseethatwaterpumpisproperlylubricated.
2. Follow winterizing instructions to prevent freeze
damage to pump and coils.
3. Always neutralize and flush detergent from sys-
tem after use.
4. Ifwateris knownto havehigh mineralcontent, use
awatersoftener in yourwatersystem,orde-scale
as needed.
5. Donotallowacidic,causticorabrasive fluidstobe
pumped through system.
6. Always use high grade quality cleaning products.
7. Never run pump dry for extended periods of time.
8. Use clean fuel: kerosene, No.1 fuel oil, or diesel.
Clean or replace fuel filter every 100 hours of op-
eration. Avoid water contaminated fuel as it will
damage the fuel pump.
9. If machine is operated with smoky or eye burning
exhaust, coils will soot up, not letting water reach
maximumoperatingtemperature.
10. Never allow water to be sprayed on or near engine
or burner assembly or any electrical component.
11. Periodically delime coils as per instructions.
12. Check to see that engine is properly lubricated.
Itisadvisable,periodically,tovisuallyinspectthe burner.
Check air inlet to make sure it is not clogged or blocked.
Wipeoff anyoilspills and keepequipment clean anddry.
Theflowofcombustionandventilatingairto the burner
must not be blocked or obstructed in any manner.
The area around the pressure washer should be kept
clean and free of combustible materials, gasoline and
other flammable vapors and liquids.
MAINTENANCE AND SERVICE
Unloader Valves:
Unloader valves are preset and tested at the factory
beforeshipping.Occasional adjustmentof theunloader
may be necessary to maintain correct pressure.
Winterizing Procedure:
Damage due to freezing is not covered by warranty.
Adhereto thefollowingcold weatherprocedures when-
ever the washer must be stored or operated outdoors
under freezing conditions.
During wintermonths,when temperaturesdropbelow
32°F, protecting your machine against freezing is nec-
essary. Store the machine in a heated room. If this is
not possible then mix a 50/50 solution of anti-freeze
and water in the float tank. Turn the engine on to si-
phon the anti-freeze mixture through the machine. If
compressed air is available, an air fitting can be
screwed into the float tank by removing the float tank
strainer and fitting. Then inject the compressed air.
Water will be blown out of the machine when the trig-
ger on the spray gun is opened.
High Limit HotWaterThermostat:
For safety,eachmachine is equipped with a tempera-
turesensitivehighlimitcontrol switch.In the eventthat
the water should exceed its operating temperature,
the high limit control will turn the burner off until the
water cools then it will automatically reset itself.The
thermostat sensor is located on the discharge side of
the heating coil.The thermostat control dial is located
on the control panel.
Pumps:
Before running the pump check the pump crankcase
for a proper oil level.A proper oil level is indicated by
the red dot in the sightglass or between the high and
low marks on the dipstick.Use only SAE 30 non-de-
tergentoil.Change the initial oil after the first 50 hours
andthen change theoilevery500hours or everythree
months.
Whendrainingoil, clean insideofcrankcaseto remove
all impurities. CAUTION: When operating in damp
places or with high temperature fluctuations oil must
be changed immediately.
Cleaning of Coils:
Inalkalinewaterareas,lime deposits canaccumulate
rapidlyinside the heating coil.Thisgrowthisincreased
by the extreme heat build up in the coil.The best pre-
ventative for liming conditions is to use high quality
cleaning detergents.In areas where alkaline water is
an extreme problem, periodic use of Coil Conditioner
will remove lime and other deposits before coil be-
comes plugged.(See Deliming instructions for use of
CoilConditioner.)
Deliming Coils:
Periodic flushing of coils or optional float tank is rec-
ommended.
Step 1 Fill a container with 4 gallons of water, then
add 1 lb.of deliming powder.Mix thoroughly.
Pour mixture into float tank.
Step 2 Remove wand assembly from spray gun and
put spray gun into float tank.Secure the trig-
ger on the spray gun into the open position.
Step 3 Turn engine on, allowing solution to be
pumped throughcoilsbackintothefloattank.
The solution should be allowed to circulate
2- 4 hours or until the color changes.
Step 4 After circulating solution, flush the entire sys-
tem with fresh water.Clean out float tank and
then reinstall wand assembly to spray gun.