Installation
A black and yellow gasket are supplied with each Switch-
Tip. The solvent you use determines which gasket to use
with the RAC IV. The new flat-backed seat accepts either
gasket. If you have an older RAC IV which you plan to use
with this gun, you must install the new style seat.
When to use the black rubber gasket
The black rubber gasket is for use ONLY with latex and
oil-based paints, stoddard solvents, mineral spirits, tur-
pentine and water. When using this gasket, the SwitchTip
can be removed and replaced without using tools.
When to use the yellow plastic gasket
The yellow plastic gasket can be used with the same
fluids as the black rubber gasket AND with most other
solvents. When using this gasket, you must loosen the
RAC IV retaining nut to remove the SwitchTip.
WARNING
To reduce the risk of fluid splashback in to the eyes
or on the skin:
USE THE BLACK RUBBER GASKET ONLY with
latex and oil-based paints, stoddard solvents,
mineral spirits, turpentine, and water. Never use it
with any other solvents.
USE THE YELLOW PLASTIC GASKET with the
same solvents as the black rubber gasket and with
lacquer thinner, tricholorethylene, MEK, acetone,
brush cleaner, xylol, and any unknown solvents.
To install the RAC IV and SwitchTip
WARNING
Always follow the Pressure Relief Procedure
Warning on page 9 before installing, cleaning or
changing tips.
NOTE: The spray tip supplied with this gun is for use
with medium viscosity fluid, such as latex paint. See
AVAILABLE TIPS, page 12, or contact your Graco
distributor to help you select the right tip for your job.
Install the SwitchTip in the tip guard. The flange on the
cylinder fits into the slots at the base of the tip guard.
See Fig 3.
Place the seat on the end of a pencil, curved side out.
Guide the seat into the retaining nut and turn it until it
straddles the cylinder. Drop in the appropriate gasket
and press it down. If using the yellow plastic gasket, be
sure the flat side faces out.
Screw the RAC IV retaining nut snugly onto the gun,
holding the orange tip guard in the desired position.
Finish tightening with a wrench.
CAUTION
Never use a wrench to turn the plastic tip guard, to
avoid damage to the guard.
Fig 3
YELLOW
PLASTIC
GASKET
BLACK
RUBBER
GASKET
221–XXX
SwitchTip
SPRAY TIP
RAC IV
DripLess
TIP GUARD
RETAINING
NUT
FLAT-BACKED
SEAT
