10
307-863
Startup
NOTE: Refer to Fig. 3 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 (K).
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 (30) into the paint
container.
4.
Turn the pressure control switch (A) to OFF.
5.
Open the black fuel shutoff lever (K) by pushing
it in the direction of the arrow.
6.
Be sure the spark plug cable (L) 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 (B) all the
way counterclockwise to the lowest pressure
setting.
b.
Pull the metal throttle lever (H) away from
the fuel tank to the maximum position (fully
left).
c.
If the engine is cold, close the gray choke
lever (J), 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 (E). Holding the frame
of the sprayer with one hand, pull the rope rap-
idly and firmly. Continue holding the rope as
you let it return. Pull and return the rope until
the engine starts.
f.
Open the choke (J). In cold weather, leave
the choke closed for 10 to 30 seconds before
opening it to keep the engine running. Other-
wise, 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 (53).
b.
Turn the pressure control switch (A) to ON.
c.
Slowly increase the pressure knob (B) until the
pump starts to cycle slowly. Cycle the pump
slowly until fluid is flowing smoothly from the
pressure drain valve, indicating the pump is
fully primed.
d.
Close the pressure drain valve (53).
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 man-
ual 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. Turn the pressure
adjusting knob (B) until you get a good pattern.
Then slowly lower the throttle (H) setting as far as
you can without changing the spray pattern.
CAUTION
Always use the lowest needed fluid pressure and
the lowest needed throttle (H) setting, to increase
the life of the sprayer. Higher settings cause exces-
sive clutch cycling, premature tip wear and prema-
ture pump wear.
CAUTION
Close the fuel valve (K) when transporting the spray-
er to prevent fuel from flooding the engine.
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 difficult.
