Graco Inc. 3050 Pressure Washer User Manual


 
6 308-525
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:
This pressure washer is 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 cables are pushed firmly onto the spark
plugs. Put the ignition shutoff switch in the “on”
position
and 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. Press the start button. 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
partially
closed. Start the engine as described in the
preceding paragraph. When the engine starts, be
sure
to open the choke completely
.
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.