INSTRUCTIONS–PARTS LIST
307–863
Rev. K
Supersedes J
and PCN K
3.5 HORSEPOWER, GASOLINE-POWERED
GM 3500
Airless Paint Sprayer
3000 psi (210 bar) Maximum Working Pressure
Model 222–028, Series F
Basic Sprayer with Lo–Boy Cart
Model 231–077
Same as 222–028, with hose and gun, RAC IV
Dripless
Tip Guard, and 517 size SwitchTip
Model 221-040, Series F
Basic Upright Sprayer
Model 231-057
Same as 221–040, with hose and gun, RAC IV
Dripless
Tip Guard, and 517 size SwitchTip
Table Of Contents
Warnings
2
. . . . . . . . . . . . . .
Setup
8
. . . . . . . . . . . . . . . . .
Startup
10
. . . . . . . . . . . . . . . .
Flushing Guidelines
12
. . . . .
Troubleshooting
13
. . . . . . .
Repair
14
. . . . . . . . . . . . . . . .
Parts
30
. . . . . . . . . . . . . . . . .
Accessories
38
. . . . . . . . . . .
Technical Data
39
. . . . . . . . .
Dimensions
39
. . . . . . . . . . . .
Warranty
40
. . . . . . . . . . . . . .
GRACO INC.
P.O. BOX 1441
MINNEAPOLIS, MN
55440–1441
COPYRIGHT 1988, GRACO INC.
This manual contains important
warnings and information.
READ AND RETAIN FOR REFERENCE
Model 231-057
Shown
Liquids can be injected into the body by high pressure airless spray or leaks
– especially hose leaks.
Keep body clear of the nozzle. Never stop leaks with any part of the body.
Drain all pressure before removing parts.Avoid accidental triggering of gun
by always setting safety latch when not spraying.
Never spray without a tip guard.
In case of accidental skin injection, seek immediate
“Surgical Treatment”.
Failure to follow this warning can result in amputation or serious
injury.
FIRE AND
EXPLOSION HAZARD
SKIN INJECTION
HAZARD
READ AND UNDERSTAND ALL LABELS AND INSTRUCTION MANUALS BEFORE USE
Spray painting, flushing or cleaning equipment with flammable liquids in
confined areas can result in fire or explosion.
Use outdoors or in extremely well ventilated areas. Ground equipment,
hoses, containers and objects being sprayed.
Avoid all ignition sources such as static electricity from plastic drop cloths,
open flames such as pilot lights, hot objects such as cigarettes, arcs from
connecting or disconnecting power cords or turning light switches on and
off.
Failure to follow this warning can result in death or serious injury.
NOTE: This is an example of the DANGER label on your sprayer.
This label is available in other languages, free of charge.
See page 38 to order.