Graco Inc. 800-690 Pressure Washer User Manual


 
308–529
6
STARTUP
Always use this startup procedure to ensure that the
unit
is started safely and properly
.
1.
Check oil levels.
Engine: Add SAE 30 or 10W–30 weight detergent
oil as necessary
.
Pump:
Add SAE 20 or 30 weight non–detergent
oil
as
necessary
.
NOTE:
Some units are equipped with a low–oil
sensor
that shuts the engine of
f if the oil level
falls below a certain level. If the unit stops
unexpectedly,
check both the oil and the fuel
levels.
Check the oil level each time the unit is
refueled.
2. Check
fuel level.
WARNING
DO NOT
refuel a hot engine. Refueling a hot
engine could cause a fire. Use only fresh, clean
regular or unleaded gasoline. Close the fuel
shutoff
valve during refueling.
3. T
urn on the water supply
.
CAUTION
Never
run the unit dry
. Costly damage to the pump
will result. Always be sure the water supply is
completely
turned on before operating.
4. Trigger the gun until water sprays from the tip
indicating
that the air is purged from the system.
5. Open
the fuel shutof
f valve. Be sure the spark plug
ignition
cable is pushed firmly onto the spark
plug.
On those units equipped with an ignition shutof f
switch, put the switch in the “on” position and put
the
throttle in the “run” position.
6.
Start the engine.
NOTE: For
easier starting, have one person start the
pressure washer while another person
triggers
the spray gun.
If the engine is cold, completely close the engine
choke. Grasp the starter rope, brace one foot on
the
pressure washer chassis and pull rope rapidly
and
firmly
. Continue holding the rope as it returns.
Pull and return the rope until the engine starts. In
cool
weather
, the choke may
have to be kept closed
for
10 to 30 seconds before opening it to keep the
engine running. Otherwise, open the choke as
soon
as the engine starts.
If
the engine is warm, leave the choke open, or just
partly
close it. Start the engine as described in the
preceding paragraph. When it starts, be sure to
open
the choke completely
.
CAUTION
On
recoil start engines, never let the starter rope
return by itself. It could jam the recoil system.
7.
ALWAYS
engage the gun’ s trigger safety latch
whenever
you stop spraying, even for a moment, to
reduce
the risk of fluid injection or splashing in the
eyes
or on the skin if the gun is bumped or triggered
accidentally.
8.
ALWAYS
observe the following CAUTIONS to
avoid
costly damage to the pressure washer
.
CAUTION
DO
NOT
allow
the pressure washer to idle for more
than 10 minutes. Doing so may cause the
recirculating water to overheat and seriously
damage
the pump. T
urn of
f the pressure washer if it
will not be spraying or cleaning at least every 10
minutes. If heated inlet water is used, reduce this
time further.
DO NOT
run the pump dry , which will quickly
damage
the pump. Be sure
the water supply is fully
turned
on before starting the pump.
DO
NOT
operate the pressure washer
with the inlet
water screen removed. This screen helps keep
abrasive sediment out of the pump, which could
clog
or scratch the pump. Keep this screen clean.
DO NOT
pump caustic materials; such materials
may
corrode the pump components.
9. See
the chemical injector or sandblaster kit
manual
for detailed cleaning information if these
accessories
are used.