Graco Inc. 308-523 Pressure Washer User Manual


 
6 308-523
STARTUP
Always use this start-up 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:
All units are equipped with a low–oil sensor
that shuts the engine off 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 shutoff valve. Be sure the spark plug
ignition cable is pushed firmly onto the spark plug.
On those units equipped with an ignition shutoff
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
r
ecoi
l s
tar
t e
ngines
, n
eve
r l
e
t t
h
e s
tarte
r r
ope
return
b
y i
tself
. I
t c
oul
d j
am the recoi
l s
ystem.
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. Turn off 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.