Hobart Welding Products H-9A Gun User manual

Processes
OM-952 220 361A
June 2004
H-9A Gun
Description
MIG (GMAW) Welding (Optional)
Flux Cored (FCAW) Welding
Semi-Automatic, Air-Cooled
Flux Cored (FCAW) And MIG
(GMAW) Welding Gun
Visit our website at
www.HobartWelders.com

Hobart Welders manufactures a full line
of welders and welding related equipment.
For information on other quality Hobart products, contact your local Hobart
distributor to receive the latest full line catalog or individual catalog sheets.
To locate your nearest distributor or service agency call 1-877-Hobart1.
Thank you and congratulations on choosing Hobart. Now you can get the
job done and get it done right. We know you don’t have time to do it any
other way.
This Owner’s Manual is designed to help you get the most out of your
Hobart products. Please take time to read the Safety precautions. They
will help you protect yourself against potential hazards on the worksite.
We’ve made installation and operation quick
and easy. With Hobart you can count on years
of reliable service with proper maintenance.
And if for some reason the unit needs repair,
there’s a Troubleshooting section that will help
you figure out what the problem is. The parts
list will then help you to decide the exact part
you may need to fix the problem. Warranty and
service information for your particular model
are also provided.
Hobart is registered to the
ISO 9001:2000 Quality
System Standard.
Working as hard as you
do −every power source
from Hobart is backed by
the best warranty in the
business.
From Hobart to You
Hob_Thank 7/03

TABLE OF CONTENTS
SECTION 1 −SAFETY PRECAUTIONS FOR FCAW AND
GMAW WELDING GUNS −READ BEFORE USING 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1. Symbol Usage 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2. FCAW And GMAW Gun Hazards 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EMF INFORMATION 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2 −SAFETY INFORMATION 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 3 −INSTALLATION 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1. Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-2. Duty Cycle And Overheating 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-3. Installing Gun Into Welding Power Source 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-4. Threading Welding Wire 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 4 −OPERATION 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1. Operating The Gun 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 5 −MAINTENANCE & TROUBLESHOOTING 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1. Replacing Gun Contact Tip 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2. Cleaning Gun Liner 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-3. Replacing Gun Liner 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-4. Replacing Liner O-Ring 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-5. Replacing Switch And/Or Head Tube 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-6. Removing Gun From Welding Power Source 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-7. Routine Maintenance 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-8. Troubleshooting 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 6 −PARTS LIST 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARRANTY

OM-952 Page 1
SECTION 1 −SAFETY PRECAUTIONS FOR FCAW AND
GMAW WELDING GUNS −READ BEFORE USING
SR7_8/03
1-1. Symbol Usage
Means Warning! Watch Out! There are possible hazards with this
procedure! The possible hazards are shown in the adjoining symbols.
This group of symbols means Warning! Watch Out! Possible ELECTRIC SHOCK and HOT PARTS hazards.
Consult symbols and related instructions below for necessary actions to avoid the hazards.
YMarks a special safety message.
.Means NOTE; not safety related.
1-2. FCAW And GMAW Gun Hazards
WARNING
PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDREN
AWAY. PACEMAKER WEARERS KEEP AWAY UNTIL CONSULTING YOUR DOCTOR.
In welding, as in most jobs, exposure to certain hazards occurs. Welding is safe when precautions are taken. The
safety information given below is only a summary of the more complete safety information found in the wire feeder
and welding power source Owner’s Manuals. Read and follow all safety precautions.
HAVE ALL INSTALLATION, OPERATION, MAINTENANCE, AND REPAIR WORK PERFORMED ONLY BY
QUALIFIED PEOPLE.
GMAW WELDING can be hazardous.
ARC RAYS can burn eyes and skin.
1. Wear welding helmet with correct shade of filter.
2. Wear correct eye and body protection.
3. Cover exposed skin with spatter-resistant
clothing.
ELECTRIC SHOCK can kill.
1. Always wear dry insulating gloves.
2. Insulate yourself from work and ground.
3. Do not touch live electrode or electrical parts.
4. Repair or replace worn, damaged, or cracked
gun or cable insulation.
5. Turn off welding power source before changing
contact tip or gun parts.
6. Keep all covers and handle securely in place.
WELDING can cause fire or explosion.
1. Do not weld near flammable material.
2. Do not weld on closed containers.
3. Watch for fire; keep extinguisher nearby.
NOISE can damage hearing; SOME
APPLICATIONS, SUCH AS PULSING,
are noisy.
1. Check for noise level limits exceeding those
specified by OSHA.
2. Use approved ear plugs or ear muffs if noise level
is high.
3. Warn others nearby about noise hazard.
HOT SURFACES can burn skin.
1. Allow gun to cool before touching.
2. Do not touch hot metal.
3. Protect hot metal from contact by others.
FUMES AND GASES can be hazardous
to your health.
1. Keep your head out of the fumes.
2. Ventilate area, or use breathing device.
3. Read Material Safety Data Sheets (MSDSs) and
manufacturer’s instructions for material used.
WELDING WIRE can cause puncture
wounds.
1. Keep hands and body away from gun tip when
trigger is pressed.
BUILD UP OF GAS can injure or
kill
1. Shut off shielding gas supply when not in
use.
2. Always ventilate confined spaces or use
approved air-supplied respirator.

OM-952 Page 2
EMF INFORMATION
The following is a quotation from the General Conclusions Section of
the U.S. Congress, Office of Technology Assessment, Biological
Effects of Power Frequency Electric & Magnetic Fields −
Background Paper, OTA-BP-E-53 (Washington, DC: U.S.
Government Printing Office, May 1989): “. . . there is now a very large
volume of scientific findings based on experiments at the cellular
level and from studies with animals and people which clearly
establish that low frequency magnetic fields can interact with, and
produce changes in, biological systems. While most of this work is
of very high quality, the results are complex. Current scientific
understanding does not yet allow us to interpret the evidence in a
single coherent framework. Even more frustrating, it does not yet
allow us to draw definite conclusions about questions of possible risk
or to offer clear science-based advice on strategies to minimize or
avoid potential risks.”
To reduce magnetic fields in the workplace, use the following
procedures:
1. Keep cables close together by twisting or taping them.
2. Arrange cables to one side and away from the operator.
3. Do not coil or drape cables around the body.
4. Keep welding power source and cables as far away as practical.
5. Connect work clamp to workpiece as close to the weld as
possible.
About Pacemakers:
The above procedures are among those also normally
recommended for pacemaker wearers. Consult your doctor for
complete information.
Considerations About Welding And The Effects Of Low Frequency Electric And
Magnetic Fields
NOTE
mod10.1 4/93

OM-952 Page 3
SECTION 2 −SAFETY INFORMATION
Read all safety messages throughout this manual.
Obey all safety messages to avoid injury.
Learn the meaning of WARNING and CAUTION.
1 Safety Alert Symbol
2 Signal Word
WARNING means possible death
or serious injury can happen.
CAUTION means possible minor
injury or equipment damage can
happen.
3 Statement Of Hazard And
Result
4 Safety Instructions To Avoid
Hazard
5 Hazard Symbol (If Available)
6 Safety Banner
Read safety blocks for each
symbol shown.
7 NOTE
Special instructions for best
operation −not related to safety.
2
NOTE
ELECTRIC SHOCK can kill.
•Do not touch live electrical parts.
•Disconnect input power before
installing or servicing.
WARNING
READ SAFETY BLOCKS at start of
Section 3-1 before proceeding.
WARNING
5
4
6
7
1 2
CAUTION
MOVING PARTS can injure.
•Keep away from moving parts.
•Keep all panels and covers closed
when operating.
3
Turn Off switch when using high frequency.
SECTION 3 −INSTALLATION
3-1. Specifications
Air-Cooled Welding Gun For FCAW And GMAW Welding
Note: Using gasless flux cored wire reduces gun duty cycle.
803 836-A
H-9 Feeds .030 −.035 in (0.8 −0.9 mm) Flux Cored Wire Or .023 −.030 in (0.6 −0.8 mm) Hard Wire
Duty Cycle Rating:
100%: 40 A With Flux Cored Wire
100%: 100 A With CO2Shielding Gas
60%: 100 A With Mixed Gases
Weight With 8 ft (2.4 m) Power Cable: 2.2 lb (1.0 kg)
Duty Cycle is percentage of 10
minutes that unit can weld at rated
load without overheating.
YExceeding duty cycle can
damage unit and void
warranty.
See Section 3-1. Specifications for amperage
rating and duty cycle.
Overheating
0
15
A or V
OR
Reduce Duty Cycle
Minutes
sduty1 5/95
Continuous Welding
100%dutycycle
3-2. Duty Cycle And Overheating
6 Minutes Welding 4 Minutes Resting
60%dutycycle

OM-952 Page 4
3-3. Installing Gun Into Welding Power Source
803 497-A / Ref. 803 378-A
Open pressure assembly. Remove screws (3) from
cover, and remove cover
from wire drive assembly.
Insert gun cable through opening in front
panel. Route weld cable, trigger leads, and
gas hose through opening in drive housing.
Reinstall cover and
secure with screws (3).
Remove wrapper from
unit.
Connect gas hose to adapter
(if unit is not equipped with
gas solenoid valve, secure
hose to wiring harness).
Connect trigger leads to
RC3 and RC4 on PC1.
Route weld cable through
opening in baffle.
Connect weld cable
to weld terminal.
Reinstall wrapper onto unit.
Secure leads and hose
with cable tie(s). .Thread wire according to
Section 3-4.
YTurn off welding power source.
.If existing gun requires removal, see Section 5-6.
.Route wires, cable, and hose to avoid contact
with sharp edges, hot surfaces, or moving parts.
Reinstall cable end into drive
housing with retaining grooves
inserted into the two retaining ribs.
Be sure to position gas hose up.
Position liner in groove so that end is
flush with back of groove.

OM-952 Page 5
3-4. Threading Welding Wire
1 Wire Spool
2 Welding Wire
3 Inlet Wire Guide
4 Pressure Adjustment Knob
5 Drive Roll
6 Gun Cable
Lay gun cable out straight.
Tools Needed:
6
1
Pull and hold wire; cut off end.
4 in
(102 mm)
Remove gun nozzle and contact tip.
Open pressure assembly. Push wire thru guides into gun liner;
continue to hold wire.
.Hold wire tightly to keep it
from unraveling.
Ref. 803 444-A / Ref. 205 837
WOOD
Feed wire to check drive roll pressure.
Tighten knob enough to prevent slipping.
Cut off wire. Close door.
Press gun trigger until wire comes
out of gun.
2
Turn power on.
INPUT
POWER
6 in
(150 mm)
Tighten
.Rotate pressure adjustment
knob in a clockwise direction
until drive roll is tight against
the welding wire. Adjust
drive roll pressure just tightly
enough to prevent wire from
slipping on or against drive
roll during operation.
Tighten
Be sure that wire is positioned
in proper feed roll groove.
Close and tighten pressure
assembly, and let go of wire.
Be sure that contact tip matches wire diameter.
Reinstall tip adapter, if applicable, contact tip
and nozzle.
35
4
.Tip adapter may also require removal
to allow wire to feed out end of gun.

OM-952 Page 6
SECTION 4 −OPERATION
4-1. Operating The Gun
Ref. 803 495-A
1 Trigger Switch
When pressed, energized wire
feeds and shielding gas flows.
1

OM-952 Page 7
SECTION 5 −MAINTENANCE & TROUBLESHOOTING
5-1. Replacing Gun Contact Tip
Ref. 803 496-B
YTurn off welding power source.
1 Nozzle
Remove nozzle.
2 Contact Tip
3 Tip Adapter
Cut off welding wire at contact tip.
Remove contact tip from tip adapter,
and install new contact tip. Reinstall
nozzle.
Tools Needed: 1
23
5-2. Cleaning Gun Liner
803 496-B / 803 838-A
YTurn off welding power source.
1 Nozzle
2 Contact Tip
3 Adapter
Head
Tube
Tools Needed:
8 mm
Lay gun cable out straight,
and blow out liner.
Remove nozzle. Cut off wire
at contact tip, and remove
contact tip and tip adapter.
8 mm
.Thread wire according to
Section 3-4.
Reassemble drive cover
and gun in reverse order
from taking it apart.
1
2
3
Open pressure assembly. Retract
wire from liner onto spool. .Hold wire tightly to keep it
from unraveling. Secure
end of wire at spool.
Remove screws (3) from
cover, and remove cover
from wire drive assembly.

OM-952 Page 8
5-3. Replacing Gun Liner
803 496-B / 803 497-A / 803 837-A / 803 899-A
Head
Tube
Tools Needed:
8 mm / 10 mm
Remove nozzle. Cut off wire
at contact tip, and remove
contact tip and tip adapter.
8 mm
Open pressure assembly. Retract
wire from liner onto spool. .Hold wire tightly to keep it
from unraveling. Secure
end of wire at spool.
Twist handle locking ring counterclockwise
1/4 turn and slide it down cable. Separate
gun handle by lifting top rear portion up and
sliding forward over head tube.
2 mm
Loosen liner setscrew
with allen wrench.
Loosen and remove
retaining nut from liner.
Pull liner out of gun
cable. If necessary, twist
cable to ease removal.
YTurn off welding power source.
Install retaining nut on one end of liner. Lay
gun cable straight on a flat surface. Insert
bare end of liner (end without retaining nut)
into wire drive end of cable. Push liner
toward gun. If necessary, twist cable to
ease installation.
Remove screws (3) from
cover, and remove cover
from wire drive assembly.
8 mm Remove black sleeving from
end of replacement liner.

OM-952 Page 9
5-3. Replacing Gun Liner (Continued)
8 mm
When liner exits cable at gun
handle, guide liner into head
tube. Continue to push liner until
it exits end of head tube.
Lower top portion of handle onto
bottom of handle. Slide locking
ring over rear of handle, and
secure with by twisting ring
clockwise 1/4 turn.
Slide top portion of handle over
head tube.
Be sure that cable is straight.
Tighten liner setscrew with
allen wrench. Cut liner so
that 3/4 in (19 mm) sticks out
of head tube.
3/4 in (19 mm)
Reassemble gun by placing
head tube into bottom section of
handle.
Thread welding wire through
gun (see Section 3-4). Reinstall
adapter, contact tip, and nozzle.
Reinstall cover onto wire
drive assembly, and secure
with screws (3).
2 mm
Insert retaining nut into adapter, and adjust liner stickout as
shown. Tighten retaining nut. Reinstall cable end into drive
housing with retaining grooves inserted into the two retaining
ribs. Be sure to position gas hose up. Position liner in groove
so that end is flush with back of groove, adjust if necessary
13/16 in
(21 mm)
8 mm

OM-952 Page 10
5-4. Replacing Liner O-Ring
803 496-B / 803 497-A / 803 837-A
Head
Tube
Tools Needed:
8 mm / 10 mm
Remove nozzle. Cut off wire
at contact tip, and remove
contact tip and tip adapter.
8 mm
Open pressure assembly. Retract
wire from liner onto spool. .Hold wire tightly to keep it
from unraveling. Secure
end of wire at spool.
Remove screws (3) from
cover, and remove cover
from wire drive assembly.
Twist handle locking ring counterclockwise
1/4 turn and slide it down cable. Separate
gun handle by lifting top rear portion up and
sliding forward over head tube.
Loosen liner setscrew
with allen wrench.
Pull end of liner out from
housing groove, Loosen nut
and slide it down on liner.
Lay gun cable straight on a
flat surface. Pull liner until it
exits the head tube. It is not
necessary to completely
remove liner from gun.
YTurn off welding power source.
Collar
Loosen collar setscrew with
allen wrench. Remove collar
and O-ring. Install replacement
O-ring, reinstall collar, and
tighten setscrew.
2 mm
2 mm O-Ring
8 mm

OM-952 Page 11
5-3. Replacing Liner O-Ring (Continued)
8 mm
Push liner toward gun. If necessary,
twist cable to ease installation.
Guide liner into head tube. Continue
to push liner until it exits end of
head tube.
Lower top portion of handle onto
bottom of handle. Slide locking
ring over rear of handle, and
secure with by twisting ring
clockwise 1/4 turn.
Slide top portion of handle over
head tube.
Be sure that cable is straight.
Tighten liner setscrew with
allen wrench. Cut liner so
that 3/4 in (19 mm) sticks out
of head tube.
3/4 in (19 mm)
Reassemble gun by placing
head tube into bottom section of
handle.
Thread welding wire through
gun (see Section 3-4). Reinstall
adapter, contact tip, and nozzle.
Reinstall cover onto wire
drive assembly, and secure
with screws (3).
2 mm
Insert retaining nut into liner, and adjust liner stickout as
shown. Tighten retaining nut. Reinstall cable end into drive
housing with retaining grooves inserted into the two retaining
ribs. Be sure to position gas hose up. Position liner in groove
so that end is flush with back of groove, adjust if necessary
13/16 in
(21 mm)
8 mm

OM-952 Page 12
5-5. Replacing Switch And/Or Head Tube
Tools Needed:
8 mm, 11/16 in
Remove nozzle, contact tip, and adapter.
Secure head tube in vice. Loosen cable
connector. Remove from vice and turn
head tube out by hand.
Hand-tighten head tube into cable
connector. Place head tube in vice and
tighten until cable connector is tight.
YTurn Off welding power source.
Slide trigger assembly forward
and out of lower portion of handle.
Disconnect leads. Install new
switch and connect leads (polarity
is not important). Reassemble in
reverse order. If replacing head
tube, continue to end of figure.
Lower top portion of handle onto
bottom of handle. Slide locking
ring over rear of handle, and
secure with by twisting ring
clockwise 1/4 turn.
Slide top portion of handle over
head tube.
Reassemble gun by placing
head tube into bottom section of
handle.
Thread welding wire through
gun (see Section 3-4). Reinstall
adapter, contact tip, and nozzle.
Twist handle locking ring counterclockwise
1/4 turn and slide it down cable. Separate
gun handle by lifting top rear portion up and
sliding forward over head tube.
8 mm
803 496-B / 803 498-A

OM-952 Page 13
5-6. Removing Gun From Welding Power Source
803 497-A / Ref. 803 378-A / 803 838-A
Pull weld cable, trigger leads, and gas hose
through opening in drive housing. Pull gun
cable out through opening in front panel. To
reinstall gun see Section 3-3.
Remove wrapper from
unit.
Disconnect gas hose from
adapter (if unit is not
equipped with gas solenoid
valve, loosen hose from
wiring harness).
Disconnect trigger leads from
RC3 and RC4 on PC1.
Pull weld cable through
opening in baffle.
Disconnect weld
cable from weld
terminal.
Remove leads and
hose from cable tie(s).
YTurn off welding power source.
Head
Tube
Remove nozzle. Cut off wire
at contact tip, and remove
contact tip and tip adapter.
8 mm
Open pressure assembly. Retract
wire from liner onto spool. .Hold wire tightly to keep it
from unraveling. Secure
end of wire at spool.
Remove screws (3) from
cover, and remove cover
from wire drive assembly.

OM-952 Page 14
5-7. Routine Maintenance
YTurn Off welding power source before maintaining.
Each Spool Of Wire
Blow Out
Gun
Casing
Clean
Nozzle
And Check
Contact Tip
3 Months
Control
Cord
Gas
Hose Gun Cable
Replace
Cracked
Parts
5-8. Troubleshooting
Trouble Remedy
Wire does not feed; wire is not ener-
gized; wire feeds unevenly
Check contact tip. Check for kinks in gun cable.
g
i
ze
d
; w
i
re
f
ee
d
s uneven
l
y.
Check contact tip. Check for kinks in gun cable. Blow out gun liner (see Section 5-2).
Check for secure gun trigger lead connections at PC1 (see Section 3-3).
Check, and if necessary, replace gun trigger switch (see Section 5-5).
Weld porosity. Remove weld spatter buildup in nozzle.
Make sure inner head tube is tight in cable connector.
Check shielding gas flow/supply.
Replace liner O-ring (see Section 5-4).
Wire feeding stops or does not feed
properly during welding.
Straighten gun cable and/or replace damaged parts (see Section 5-2 or 5-3).
Adjust drive roll pressure (see Section 3-4).
Change to proper drive roll groove (see welding power source manual).
Readjust hub tension (see weld power source manual).
Clean or replace liner if dirty or plugged (see Section 5-2 or 5-3).
Replace drive roll or pressure bearing if worn or slipping (see welding power source manual).

OM-952 Page 15
SECTION 6 −PARTS LIST
1
803 840-A
2
3
6
4
8 −See Table 6-1
4
4
7
5
9
Figure 6-1. H-9A Gun
Description
Part
No.
195 343
Item
No.
Figure 6-1. H-9A Gun
Quantity
1 169 715 NOZZLE, slip type .500 orf flush 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 169 716 ADAPTER, contact tip 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 210 969 TUBE, head 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 211 450 HANDLE, top/bottom/cap 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 214 738 O-RING 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 211 449 SWITCH, trigger 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 210 970 LINER, monocoil .023/.035 wire x 8ft 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8♦087 299 TIP, contact scr .023 wire x 1.125. . . . . . . . . . . . . . . . .
8 000 067 TIP, contact scr .030 wire x 1.125 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8♦000 068 TIP, contact scr .035 wire x 1.125. . . . . . . . . . . . . . . . .
9 220 362 NUT, liner retainer 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
♦OPTIONAL
To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested
Replacement Parts. Model and serial number required when ordering parts from your local distributor.
Table 6-1. Contact Tip Options
HOBART PART NO. DESCRIPTION REMARKS
196 134 Tip, contact scr .023 wire Pkg of 5
196 131 Tip, contact scr .030 wire Pkg of 5
196 132 Tip, contact scr .035 wire Pkg of 5
196 137 Nozzle, slip type .500 orf flush Qty 1
196 135 Adapter, contact tip Qty 1
WELD-IT PART NO. DESCRIPTION REMARKS
770 174 Tip, contact scr .023 wire Pkg of 5
770 177 Tip, contact scr .030 wire Pkg of 5
770 180 Tip, contact scr .035 wire Pkg of 5

Notes
Work like a Pro!
Pros weld and cut
safely. Read the
safety rules at
the beginning
of this manual.