307-863
10
START UP
NOTE: Refer
to Fig 1
1–1 as you start the sprayer
.
NOTE: When starting a sprayer that IS NOT PRIMED,
remove
the spray tip.
1. Be sure the gas tank is full. Open the black fuel
shutoff
lever
.
2. Check the engine oil level.
NOTE: The engine stops automatically if it is low on oil.
If
you try to start it again without adding more
oil,
a red light on the
rear of the engine glows as you
pull
the starter rope.
3. Place the suction tube into the paint container.
4. Turn the pressure control switch to OFF.
5. Open the black fuel shutoff lever by pushing it in
the
direction of the arrow
.
6. Be sure the spark plug cable is firmly pushed
onto the spark plug.
CAUTION
Never
attempt to start the engine unless fluid pres
-
sure is relieved and the pressure control is turned
OFF.
Attempting to start the engine when it is pres
-
surized
will damage the recoil system.
7. To start the engine:
a. Turn the pressure adjusting knob all the way
counterclockwise
to the lowest pressure
setting.
b. Pull
the metal throttle lever away
from the fuel
tank
to the maximum position (fully left).
c. If
the engine is cold,
close the gray choke lever
,
located
beneath the air cleaner
.
If
the engine is warm,
close the choke only half
way
or not at all.
d. Turn the engine switch to ON.
WARNING
A rope which recoils too quickly may hit someone
and cause serious bodily injury. The rope could
also
jam in the recoil assembly
.
e. Grasp
the
starter rope.
Holding the frame of the
sprayer with one hand, pull the rope rapidly and
firmly.
Continue holding the rope as you let it re
-
turn. Pull and return the rope until the engine
starts.
f. Open the choke. In cold weather, leave the
choke closed for 10 to 30 seconds before
open
-
ing
it to keep the engine running. Otherwise, open
the
choke as soon as the engine starts.
8. Disengage the gun safety latch.
9. To start the pump:
a.
Open the pressure drain valve.
b. T
urn the pressure control switch to ON.
c. Slowly increase the pressure setting until the
pump
starts to cycle slowly
. Cycle the pump slow
-
ly
until fluid is
flowing smoothly from the pressure
drain
valve, indicating the pump is fully primed.
d.
Close the pressure drain valve.
e. Hold a metal part of the gun firmly against a
grounded metal container, squeeze the trigger
until
fluid is flowing smoothly from the gun.
f. Release the trigger and engage the gun safety
latch.
WARNING
To
reduce the
risk of serious bodily injury from fluid
injection,
NEVER operate the spray gun with the tip
guard
removed.
10. Install
the spray tip.
Refer to the instruction manual
supplied with the tip (307–848 if you are using a
RAC
IV).
11. Adjust the engine speed and pump pressure.
Trigger the gun onto a test paper to check the spray
pattern
and atomization. T
urn
the pressure adjusting
knob
until you get a good pattern. Then slowly lower
the
throttle setting as far as you can without changing
the
spray pattern.
CAUTION
Always use the lowest needed fluid pressure and
the lowest needed throttle setting, to increase the
life
of the sprayer
. Higher settings cause excessive
clutch cycling, premature tip wear and premature
pump
wear
.
CAUTION
Close
the fuel valve whenever you are transporting
the sprayer to prevent fuel from flooding the en-
gine.
Keep
the sprayer upright and level when operating
it and when transporting it. This prevents crank-
case
oil from
leaking into the combustion chamber
,
which
makes start up very dif
ficult.
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