Graco 231-132 Operation manual

308–082
Rev. W
Supersedes Rev. V
First choice when
quality counts. t
INSTRUCTIONS-PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
0001F
GM 3500
GASOLINE-POWERED AIRLESS LINESTRIPER
LineLazer
3000 psi (210 bar, 21.0 MPa)
Maximum Working Pressure
Model 231–132, Series A
With one gun, RAC IVRDripLesstTip guard,
Size 317 LineLazer Tip & Size 517 SwitchTipt,
and 50 foot (15 m) hose.
Model 231–140
Same as 231–132, except includes
Second Gun Kit, 224–097
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
Graco Inc. is registered to I.S. EN ISO 9001

2 308-082
Part Identification
Key
A Casterlever
B Dualgunselector
C Mainhose
D Suctionhose
E Fluidfilter
F Pressuredrain valve
G Arm
H Post
J Carriagebar
K Gunholder
L Rac IV tip guard
M Switch Tip
N Flexgun
O Displacementpump
P Caster
Q Dualgun selector cable
R Pressurecontrol
S Sparkplugcable
T AirCleaner
U Muffler
V FuelTank
W Hook eyelet (use to strap
pail or pail cover to cart)
X Pailcover
Y CasterCable
Z Groundingcableand
clamp
AA Collar
A
B
C
D
E
F
GH
JK
L
M
N
OP
Q
R
S
T
U
V
W
X
Y
Z
AA
0001F

3308-082
Table of Contents
Warnings 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fueling 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Second Gun and Hose Installation 11. . . . . . . . . . . . . . .
Flushing 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Startup 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spray Tip and Tip Guard 15. . . . . . . . . . . . . . . . . . . . . . .
Gasket Selection 15. . . . . . . . . . . . . . . . . . . . . . .
Installation 15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clearing a Clogged Tip 15. . . . . . . . . . . . . . . . . .
Maintenance 15. . . . . . . . . . . . . . . . . . . . . . . . . . .
Spray Tip Selection 16. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spray Tip Application Recommendations 16. .
Spray Techniques 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Width Adjustment 16. . . . . . . . . . . . . . . . . .
Positioning the Gun Arm Assembly 17. . . . . . . . . . . . . .
Vertical position of the first or second gun 17.
Horizontal position of the first gun 17. . . . . . . .
Horizontal position of the second gun 17. . . . .
Mount guns on the engine side of the cart 18.
Setup for spraying arcs 18. . . . . . . . . . . . . . . . .
Adjust Simultaneous Gun Triggering 18. . . . . . . . . . . . .
Gun Arm Positions 19. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Caster Lever & Cable Operation 20. . . . . . . . . . . . . . . . .
Operation 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 20. . . . . . . . . . . . . . . . . . . . . . . . . . .
Caster Tire Replacement 20. . . . . . . . . . . . . . . .
Caster Cable Tension Adjustment 20. . . . . . . .
Caster Alignment 20. . . . . . . . . . . . . . . . . . . . . . .
How to Mount the Gun 20. . . . . . . . . . . . . . . . . . . . . . . . .
Gun Cable & Dual Gun Selector Operation 21. . . . . . . .
How the Dual Gun Selector Works 21. . . . . . . .
How to Release the Selector Cable 21. . . . . . .
Adjust the Trigger Cable Tension 22. . . . . . . . .
Maintenance 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair or Replacement
Pressure Control 26. . . . . . . . . . . . . . . . . . . . . . .
Pressure Control Adjustment 27. . . . . . . . . . . .
Bearing Housing and Connecting Rod 28. . . . .
Drive Housing 29. . . . . . . . . . . . . . . . . . . . . . . . .
Pinion Housing 30. . . . . . . . . . . . . . . . . . . . . . . . .
Clutch 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field & Wiring Harness 34. . . . . . . . . . . . . . . . . .
Clamp 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch Housing Removal 35. . . . . . . . . . . . . . . .
Reassembly 36. . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Pressure Control Parts 39. . . . . . . . . . . . . . . . . .
Cart Parts 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical Parts 42. . . . . . . . . . . . . . . . . . . . . . .
Gun Mounting Parts 44. . . . . . . . . . . . . . . . . . . .
Pinion Parts 45. . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Change Summary
This manual has been updated to add items 194 – 196 and change item 2 to 240–484 from 238–361.

4 308-082
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
equipment if you do not follow the instructions.
WARNING
INSTRUCTIONS
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
DThis equipment is for professional use only.
DRead all instruction manuals, tags, and labels before operating the equipment.
DUse the equipment only for its intended purpose. If you are not sure, call your distributor.
DDo not alter or modify this equipment.
DCheck equipment daily. Repair or replace worn or damaged parts immediately.
DDo not exceed the maximum working pressure of the lowest rated system component. Refer to the
Technical Data on page 46 for the maximum working pressure of this equipment.
DUse fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.
DDo not use hoses to pull equipment.
DRoute hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 82_C (180_F) or below –40_C (–40_F).
DDo not lift pressurized equipment.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.
DWear hearing protection when operating this equipment.
DDo not use 1,1,1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents in pressurized aluminum equipment. Such use could result in a
chemical reaction, with the possibility of explosion.

5308-082
WARNING
INJECTION HAZARD
Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely
serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also
cause serious injury.
Fluid injected into the skin may look like just a cut, but it is a serious injury. Get immediate medi-
cal attention.
Do not point the gun at anyone or at any part of the body.
Do not put your hand or fingers over the spray tip.
Do not stop or deflect leaks with your hand, body, glove or rag.
Do not “blow back” fluid; this is not an air spray system.
Always have the tip guard and the trigger guard on the gun when spraying.
Check the gun diffuser operation weekly. Refer to the gun manual.
Be sure the gun trigger safety operates before spraying.
Lock the gun trigger safety when you stop spraying.
Follow the Pressure Relief Procedure on page 7 if the spray tip clogs and before cleaning,
checking or servicing the equipment.
Tighten all fluid connections before operating the equipment.
Check the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately. Do not
repair high pressure couplings; you must replace the entire hose.
Fluid hoses must have spring guards on both ends, to help protect them from rupture caused by
kinks or bends near the couplings.
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
inhaled, or swallowed.
Know the specific hazards of the fluid you are using.
Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.
FUEL HAZARD
The fuel used in this unit is combustible and when spilled on a hot surface can ignite and cause a fire.
Do not fill the fuel tank while the engine is running or hot.
EXHAUST HAZARD
The exhaust contains poisonous carbon dioxide which is colorless and odorless.
Do not operate this equipment in a closed building.

6 308-082
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and
result in a fire or explosion and serious injury.
If there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing immediately. Do not use the equipment until you identify and correct the problem.
Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being sprayed.
Keep the spray area free of debris, including solvent, rags, and gasoline.
Disconnect all electrical equipment in the spray area.
Extinguish all open flames or pilot lights in the spray area.
Do not smoke in the spray area.
Do not turn on or off any light switch in the spray area while operating or if fumes are present.
Do not operate a gasoline engine in the spray area.
Ground the sprayer to a true earth ground with the ground wire and clamp (supplied).
Use only electrically conductive hoses.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers.
Keep clear of all moving parts when starting or operating the sprayer.
Before servicing the equipment, follow the Pressure Relief Procedure on page 7 to prevent the
equipment from starting unexpectedly.
Liquidscan 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.Avoidaccidental
triggering of gun by always setting safety latch when not spraying.
Never spray without a tip guard.
Incase of accidental skin injection,seek immediate
“SurgicalTreatment”.
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
Spraypainting,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,containersand objectsbeingsprayed.
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.

7308-082
Setup
General Information
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and the
parts drawing.
NOTE: Always use Genuine Graco Parts and Acces-
sories, available from your Graco distributor.
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE OR EXPLOSION HAZ-
ARD on page 6.
1. Sprayer: make sure the grounding chain (106)
contacts the ground while the unit is moving. See
page 42. For stationary spraying, connect a
ground wire and clamp (159) to a true earth
ground.
2. Fluid hoses: use only grounded hoses with a
maximum of 500 ft. (150 m) combined hose
length to ensure grounding continuity.
3. Spray gun: obtain grounding through connection to
a properly grounded fluid hose and sprayer.
4. Object being sprayed: according to local code.
5. Fluid supply container: follow your local code.
6. Solvent pails used when flushing: follow your local
code. Use only metal pails, which are conductive,
placed on a grounded surface. Do not place the
pail on a nonconductive surface, such as paper or
cardboard, which interrupts the grounding continu-
ity.
7. To maintain grounding continuity when flushing or
relieving pressure , hold a metal part of the spray
gun firmly to the side of a grounded metal pail,
then trigger the gun.
Fig. 1
159
Pressure Relief Procedure
WARNING
INJECTION HAZARD
Fluid under high pressure can be in-
jected through the skin and cause seri-
ous injury. To reduce the risk of an injury
from injection, splashing fluid, or moving parts, fol-
low the Pressure Relief Procedure whenever you:
are instructed to relieve the pressure,
stop spraying,
check or service any of the system equipment,
or install or clean the spray tips.
1. Engage the spray gun safety latch.
2. Turn the ON/OFF switch to OFF.
3. Flip the pressure control switch to OFF.
4. Disengage the gun safety latch. Hold a metal part
of the gun firmly to the side of a grounded metal
pail, and trigger the gun to relieve pressure.
5. Engage the gun safety latch.
6. Hold the pressure relief tube firmly to the side of a
grounded metal pail, and open the pressure relief
valve. Leave the valve open until you are ready to
spray again.
7. Disconnect the spark plug cable to prevent the
system from starting unexpectedly.
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
tip guard retaining nut or hose end coupling and relieve
pressure gradually, then loosen completely. Now clear
the tip or hose.
06877
Fig. 2
Valve shown in
CLOSED position. Valve shown
in OPEN position.
Pressure
Hose
Suction
Tube
Pressure
Relief Tube

8 308-082
Setup
1. Read and follow the warnings on pages 4 and 6
before installing or operating this sprayer.
2. UnpacktheLineLazerCarefullyraisethehandle(19)
to a vertical position. Four screws (39) and locknuts
(40) are packed in a bag. Install the two rear screws
(39A) and finger tighten the nuts (40A). Install one
screw (39B) and nut (40B) on each side of the han-
dle. Firmly tighten all four nuts. See Fig. 3.
CAUTION
When raising the cart handle (19), be sure no cables
are caught on the frame or become kinked.
3. To install a second gun and hose, see page 11.
4. Fill the packing nut/wet–cup (216) 1/3 full with
Graco Throat Seal Liquid (TSL), supplied, and
keep it filled, to help extend the pump life. See
Fig. 4.
5. Check the engine oil level. Refer to the Honda
engine manual, supplied. This is a summary of the
information: Remove one of the oil fill plugs (A);
the oil should be almost overflowing. See Fig. 4.
Add oil as necessary. Also read the Maintenance
section on page 23.
Recommendedengineoil:Useahigh–quality,deter-
gent oil, SAE 10W–40, classified “FOR SERVICE
SE or SF”.
6. Ground the sprayer. Propergrounding is essentialto
maintaining an electrically safe system. Also read
andfollowFIRE OR EXPLOSIONHAZARDonpage
6.
WARNING
Ground the sprayer whenever it is used indoors,
either as a moving line striper or as a stationary
sprayer. Floors in most factories are coated, which
causes them to be poor electrical conductors. This
increases the risk of hazardous static electric
discharge, which can result in serious injury, fire, or
explosion and property damage.
Whenever you flush: connect the ground clamp
(159) to a true earth ground.
Using as an outdoor striper: Be sure the static
chain attached to the bottom of the cart drags on the
groundto help dissipate staticelectricity.Groundthe
sprayer to a true earth ground if specified by your
local electrical code.
Indoor spraying: Groundthesprayerwheneverthe
sprayer is used indoors. The ground wire supplied
with the sprayer is not long enough to allow much
operator movement. Therefore, the operator must
provide a longer ground wire or provide some other
method of effective electrical grounding asspecified
by your local electrical code.
7. Provideadequateventilationwhensprayingindoors.
WARNING
If the LineLazer is used indoors, you must vent the
exhaust to the outdoors or provide adequate ven-
tilation as specified by you local code. This is to
reduce the risk of carbon monoxide poisoning.
8. Fill the gas tank. See Fueling on page 10.
9. Flush the pump to remove the lightweight oil which
wasleft in the pumptoprotect it from rust.Followthe
Flushing on page 12.
10. Prepare the paint according to the manufacturer’s
recommendations. Remove any skin that may have
formed. Stir the paint to mix pigments.
Strainthepaintthroughafine nylonmeshbag(avail-
able at most paint dealers) to remove particles that
could clog the filter or spray tip. This is an important
step toward trouble–free spraying.
0007D
Fig. 3
19
39A
40A
40B
39B
216
Fig. 4


Keepfilled with TSL
A0008

9308-082
Setup
11. Observe the following cautions to avoid pressure
control damage.
CAUTION
To avoid damaging the pressure control, follow these
precautions.
Allow the main hose to act as a pulsation damp-
ener: Always use nylon spray hose at least 50 ft.
(15 m) long for the main gun; Never use a wire
braid hose; it is too rigid.
Never install a ball valve or shutoff device be-
tween the filter and the 50 ft. (15 m) hose.
Do not allow water or water-base material to
freeze in the pressure control.
CAUTION
Close the black fuel shutoff lever whenever you are
transporting the sprayer to prevent fuel from flooding
the engine.
Keep the sprayer upright and level when operating it
and transporting it. This prevents crankcase oil from
leaking into the combustion chamber, which makes
startup very difficult.
12. To use the wheel brake, lift the brake handle (A–
bottom rear of cart) to engage the brake. Lower
the handle to disengage the break. See Fig. 5. For
positive break engagement, be sure there is
proper tire pressure and that tire wear is not
excessive.
13. For how to operate and adjust the various features
of the LineLazer see pages 11 – 22.
14. Start the sprayer. See page 13.
Fig. 5
ÂÂ
ÂÂ
ÂÂ
ÂÂ
03586
A

10 308-082
Fueling
WARNING
Gasoline is extremely flammable and explosive
under certain conditions. To reduce the risk or a fire
or explosion:
1. Always shut off the engine before refueling.
2. Refuel in a well-ventilated area.
3. Do not smoke or allow flames or sparks in the
area where the engine is refueled or where
gasoline is stored.
4. Do not overfill the tank. Make sure the filler cap
is securely closed after refueling.
5. Fuel vapor or spilled fuel can ignite. If any fuel
is spilled during refueling, make sure the area
is dry before starting the engine.
1. Fuel specifications. Use automotive gasoline with
a pump octane number of 86 or higher. If the
engine knocks or pings, use a higher octane fuel.
Unleaded fuel minimizes combustion chamber
deposits.
2. Gasolines containing alcohol (gasohol). Do not use
gasohol which contains methanol, if the gasohol
does not contain cosolvents and corrosion inhibi-
tors for methanol. Even if it does contain such
additives, do not use the gasohol if it contains
more than 5% methanol.
NOTE: The HONDA engine warranty does not cover
damageresultingfromtheuseofgasolinescontainingal-
cohol. See the HONDAengine manual for moreinforma-
tion.
3. General.Donotuseoilandgasolinemixturesorcon-
taminated gasoline. Avoid getting dirt, dust or water
in the fuel tank.
4. Tank capacity: 0.66 gallons (2.5 liter). Leave 1/2 in.
(13 mm) at the top of the tank for gas expansion.
5. Shut off the engine switch (A) before refueling.
6. After refueling, tighten the fuel tank cap (B) firmly.
A
B
0009
Fig. 6