Miller Electric Welding System Bobcat 225G User Manual

January 1997  
Form: OM-175 104B  
Effective With Serial No. KG191348  
OWNER’S  
MANUAL  
Bobcat 225G  
(Kohler-Powered)  
CC/CV AC/DC Welding Generator For SMAW, FCAW, GMAW, GTAW Welding  
Weld  
Output  
Range  
Rated  
Welding  
Output  
Maximum  
Open-Circu  
it Voltage  
Welding  
Mode  
Auxiliary Power  
Rating  
Fuel Capacity  
Engine  
225 A, 25 V  
100% Duty  
Cycle  
,
CC/AC  
CC/DC  
CV/DC  
50 – 225 A  
50 – 210 A  
17 – 28 V  
80  
72  
33  
Kohler CH18  
Air-Cooled, Two-Cylinder,  
Four-Cycle, 18 HP  
Gasoline Engine  
210 A, 25 V  
100% Duty  
Cycle  
,
Single-Phase,  
8 kVA/kW, 70/35 A,  
120/240 V AC, 60 Hz  
8.5 gal (32 L) Tank  
200 A, 20 V  
100% Duty  
Cycle  
,
1997 MILLER Electric Mfg. Co.  
cover_om 4/95 – Ref. ST-801 188-A  
PRINTED IN USA  
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SECTION 1 – SAFETY PRECAUTIONS FOR ARC WELDING  
safety_rom1 4/95  
1-1. Symbol Usage  
Y
Marks a special safety message.  
Means Warning! Watch Out! There are possible hazards with this  
procedure! The possible hazards are shown in the adjoining symbols.  
.
Means NOTE; not safety related.  
This group of symbols means Warning! Watch Out! possible ELECTRIC SHOCK, MOVING  
PARTS, and HOT PARTS hazards. Consult symbols and related instructions below for necessary  
actions to avoid the hazards.  
1-2. Arc Welding Hazards  
WARNING  
The symbols shown below are used throughout this manual to call attention to and identify possible hazards.  
When you see the symbol, watch out, and follow the related instructions to avoid the hazard. The safety  
information given below is only a summary of the more complete safety information found in the Safety  
Standards listed in Section 1-5. Read and follow all Safety Standards.  
Only qualified persons should install, operate, maintain, and repair this unit.  
During operation, keep everybody, especially children, away.  
terminal in disconnect box or that cord plug is connected to a  
properly grounded receptacle outlet.  
ELECTRIC SHOCK can kill.  
Touching live electrical parts can cause fatal  
shocks or severe burns. The electrode and work  
circuit is electrically live whenever the output is on.  
The input power circuit and machine internal  
circuits are also live when power is on. In  
semiautomatic or automatic wire welding, the wire,  
wire reel, drive roll housing, and all metal parts  
touching the welding wire are electrically live.  
Incorrectly installed or improperly grounded  
equipment is a hazard.  
7. When making input connections, attach proper grounding  
conductor first – double-check connections.  
8. Frequently inspect input power cord for damage or bare wiring –  
replace cord immediately if damaged – bare wiring can kill.  
9.  
Turn off all equipment when not in use.  
10. Do not use worn, damaged, undersized, or poorly spliced  
cables.  
1. Do not touch live electrical parts.  
2. ear dry, hole-free insulating gloves and body protection.  
3. Insulate yourself from work and ground using dry insulating  
mats or covers big enough to prevent any physical contact with  
the work or ground.  
4. Disconnect input power or stop engine before installing or  
servicing this equipment. Lockout/tagout input power according  
to OSHA 29 CFR 1910.147 (see Safety Standards).  
5. Properly install and ground this equipment according to its  
Owner’s Manual and national, state, and local codes.  
6. Always verify the supply ground – check and be sure that input  
power cord ground wire is properly connected to ground  
11. Do not drape cables over your body.  
W
12. If earth grounding of the workpiece is required, ground it directly  
with a separate cable – do not use work clamp or work cable.  
13. Do not touch electrode if you are in contact with the work,  
ground, or another electrode from a different machine.  
14. Use only well-maintained equipment. Repair or replace  
damaged parts at once. Maintain unit according to manual.  
15. Wear a safety harness if working above floor level.  
16. Keep all panels and covers securely in place.  
17. Clamp work cable with good metal-to-metal contact to  
workpiece or worktable as near the weld as practical.  
ARC RAYS  
ARC RAYS can burn eyes and skin;  
NOISE can damage hearing; FLYING  
SLAG OR SPARKS can injure eyes.  
2. Wear a welding helmet fitted with a proper shade of filter to  
protect your face and eyes when welding or watching (see ANSI  
Z49.1 and Z87.1 listed in Safety Standards).  
Arc rays from the welding process produce intense  
visible and invisible (ultraviolet and infrared) rays  
that can burn eyes and skin. Noise from some  
processes can damage hearing. Chipping,  
grinding, and welds cooling throw off pieces of  
metal or slag.  
3.  
Wear approved safety glasses with side shields.  
4. Use protective screens or barriers to protect others from flash  
and glare; warn others not to watch the arc.  
NOISE  
5. Wear protective clothing made from durable, flame-resistant  
material (wool and leather) and foot protection.  
1. Use approved ear plugs or ear muffs if noise level is high.  
5. Work in a confined space only if it is well ventilated, or while  
wearing an air-supplied respirator. Always have a trained  
watchperson nearby. Welding fumes and gases can displace air  
and lower the oxygen level causing injury or death. Be sure the  
breathing air is safe.  
FUMES AND GASES can be hazardous  
to your health.  
Welding produces fumes and gases. Breathing  
these fumes and gases can be hazardous to your  
health.  
6. Do not weld in locations near degreasing, cleaning, or spraying  
operations. The heat and rays of the arc can react with vapors to  
form highly toxic and irritating gases.  
1. Keep your head out of the fumes. Do not breathe the fumes.  
2. If inside, ventilate the area and/or use exhaust at the arc to  
remove welding fumes and gases.  
7. Do not weld on coated metals, such as galvanized, lead, or  
cadmium plated steel, unless the coating is removed from the  
weld area, the area is well ventilated, and if necessary, while  
wearing an air-supplied respirator. The coatings and any metals  
containing these elements can give off toxic fumes if welded.  
3. If ventilation is poor, use an approved air-supplied respirator  
.
4. Read the Material Safety Data Sheets (MSDSs) and the  
manufacturer’s instruction for metals, consumables, coatings,  
cleaners, and degreasers.  
OM-175 104 Page 1  
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4. Never drape a welding torch over a gas cylinder  
5. Never allow a welding electrode to touch any cylinder  
6. Never weld on a pressurized cylinder – explosion will result.  
7. Use only correct shielding gas cylinders, regulators, hoses, and  
fittings designed for the specific application; maintain them and  
associated parts in good condition.  
.
CYLINDERS can explode if damaged.  
.
Shielding gas cylinders contain gas under high  
pressure. If damaged, a cylinder can explode.  
Since gas cylinders are normally part of the welding  
process, be sure to treat them carefully  
.
1. Protect compressed gas cylinders from excessive heat,  
mechanical shocks, slag, open flames, sparks, and arcs.  
2. Install cylinders in an upright position by securing to a stationary  
support or cylinder rack to prevent falling or tipping.  
3. Keep cylinders away from any welding or other electrical  
circuits.  
8. Turn face away from valve outlet when opening cylinder valve.  
9. Keep protective cap in place over valve except when cylinder is  
in use or connected for use.  
10. Read and follow instructions on compressed gas cylinders,  
associated equipment, and CGA publication P-1 listed in Safety  
Standards.  
6. Be aware that welding on a ceiling, floor, bulkhead, or partition  
can cause fire on the hidden side.  
WELDING can cause fire or explosion.  
Welding on closed containers, such as tanks,  
drums, or pipes, can cause them to blow up. Sparks  
can fly off from the welding arc. The flying sparks,  
hot workpiece, and hot equipment can cause fires  
and burns. Accidental contact of electrode to metal  
objects can cause sparks, explosion, overheating,  
or fire. Check and be sure the area is safe before  
doing any welding.  
7. Do not weld on closed containers such as tanks, drums, or  
pipes, unless they are properly prepared according to AWS F4.1  
(see Safety Standards).  
8. Connect work cable to the work as close to the welding area as  
practical to prevent welding current from traveling long, possibly  
unknown paths and causing electric shock and fire hazards.  
9. Do not use welder to thaw frozen pipes.  
1. Protect yourself and others from flying sparks and hot metal.  
2. Do not weld where flying sparks can strike flammable material.  
10. Remove stick electrode from holder or cut off welding wire at  
contact tip when not in use.  
3. Remove all flammables within 35 ft (10.7 m) of the welding arc. If  
this is not possible, tightly cover them with approved covers.  
11. Wear oil-free protective garments such as leather gloves, heavy  
shirt, cuffless trousers, high shoes, and a cap.  
4. Be alert that welding sparks and hot materials from welding can  
easily go through small cracks and openings to adjacent areas.  
12. Remove any combustibles, such as a butane lighter or matches,  
from your person before doing any welding.  
5. Watch for fire, and keep a fire extinguisher nearby  
.
1-3. Engine Hazards  
WARNING  
1. Use equipment outside in open, well-ventilated areas.  
2. If used in a closed area, vent engine exhaust outside and  
away from any building air intakes.  
ENGINE EXHAUST GASES can kill.  
Engines produce harmful exhaust gases.  
2. Do not add fuel while smoking or if unit is near any sparks or  
open flames.  
ENGINE FUEL can cause fire or  
explosion.  
Engine fuel is highly flammable.  
3. Do not overfill tank – allow room for fuel to expand.  
4. Do not spill fuel. If fuel is spilled, clean up before starting  
engine.  
1. Stop engine and let it cool off before checking or adding fuel.  
3. Have only qualified people remove guards or covers for  
MOVING PARTS can cause injury.  
Moving parts, such as fans, rotors, and belts can  
cut fingers and hands and catch loose clothing.  
maintenance and troubleshooting as necessary  
4. To prevent accidental starting during servicing, disconnect  
negative (–) battery cable from battery  
.
.
5. Keep hands, hair, loose clothing, and tools away from moving  
parts.  
6. Reinstall panels or guards and close doors when servicing is  
finished and before starting engine.  
1. Keep all doors, panels, covers, and guards closed and  
securely in place.  
2. Stop engine before installing or connecting unit.  
1. Always wear a face shield when working on a battery  
2. Stop engine before disconnecting or connecting battery  
cables.  
.
SPARKS can cause BATTERY GASES  
TO EXPLODE; BATTERY ACID can  
burn eyes and skin.  
3. Do not allow tools to cause sparks when working on a battery  
.
4. Do not use welder to charge batteries or jump start vehicles.  
5. Observe correct polarity (+ and –) on batteries.  
Batteries contain acid and generate explosive  
gases.  
1. If the engine is warm and checking is needed, follow steps 2  
and 3.  
STEAM AND PRESSURIZED HOT  
COOLANT can burn face, eyes, and  
skin.  
2.  
Wear safety glasses and gloves and put a rag over cap.  
3. Turn cap slightly and let pressure escape slowly before  
completely removing cap.  
It is best to check coolant level when engine is  
cold to avoid scalding.  
OM-175 104 Page 2  
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1-4. Additional Installation, Operation, And Maintenance Hazards  
WARNING  
MOVING PARTS can cause injury.  
READ INSTRUCTIONS.  
1. Before working of generator, remove spark plugs  
or injectors to keep engine from kicking back or  
starting.  
2. Block flywheel so that it will not turn while working  
on generator components.  
1. Use only genuine MILLER replacement parts.  
2. Reinstall injectors and bleed air from fuel system  
according to engine manual.  
DO NOT LET ENGINE EXHAUST SPARKS  
CAUSE FIRE.  
1. Use approved engine exhaust spark arrestor in  
required areas – see applicable codes.  
FLYING PIECES OF METAL or DIRT can  
injure eyes.  
1. Wear safety glasses with side shields or face  
shield.  
LOW VOLTAGE AND FREQUENCY CAN  
DAMAGE electrical equipment such as  
MOTORS.  
1. Turn off or unplug equipment before starting or  
stopping engine.  
STATIC ELECTRICITY can damage parts  
on circuit boards.  
1. Put on grounded wrist strap BEFORE handling  
boards or parts.  
2. Use proper static-proof bags and boxes to store,  
move, or ship PC boards.  
OVERUSE can cause OVERHEATED  
EQUIPMENT.  
1. Allow cooling period.  
MAGNETIC  
CURRENTS can affect pacemaker  
operation.  
FIELDS  
FROM  
HIGH  
2. Reduce current or reduce duty cycle before  
starting to weld again.  
1. Pacemaker wearers keep away.  
2.  
Wearers should consult their doctor before going  
3. Follow rated duty cycle.  
near arc welding, gouging, or spot welding  
operations.  
TILTING OF TRAILER can cause injury.  
1. Use tongue jack or blocks to support weight.  
2. Properly install welding generator onto trailer  
HOT PARTS can cause severe burns.  
1. .Allow cooling period before maintaining.  
2. Wear protective gloves and clothing when working  
on a hot engine.  
according to instructions supplied with trailer  
.
BATTERY ACID can BURN SKIN AND  
EYES.  
1. Do not tip.  
FALLING EQUIPMENT can cause serious  
personal injury and equipment damage.  
1. Use lifting eye to lift unit only, NOT running gear,  
gas cylinders, or any other accessories.  
2. Replace damaged battery  
.
2. Use equipment of adequate capacity to lift unit.  
3. Flush eyes and skin immediately with water  
.
1-5. Principal Safety Standards  
Safety in Welding and Cutting, ANSI Standard Z49.1, from American  
Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126  
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet  
P-1, from Compressed Gas Association, 1235 Jefferson Davis  
Highway, Suite 501, Arlington, VA 22202.  
Safety and Health Standards, OSHA 29 CFR 1910, from  
Superintendent of Documents, U.S. Government Printing Office,  
Washington, D.C. 20402.  
Code for Safety in Welding and Cutting, CSA Standard W117.2, from  
Canadian Standards Association, Standards Sales, 178 Rexdale  
Boulevard, Rexdale, Ontario, Canada M9W 1R3.  
Recommended Safe Practices for the Preparation for Welding and  
Cutting of Containers That Have Held Hazardous Substances,  
American Welding Society Standard AWS F4.1, from American  
Welding Society, 550 N.W. LeJeune Rd, Miami, FL 33126  
Safe Practices For Occupation And Educational Eye And Face  
Protection, ANSI Standard Z87.1, from American National Standards  
Institute, 1430 Broadway, New York, NY 10018.  
National Electrical Code, NFPA Standard 70, from National Fire  
Protection Association, Batterymarch Park, Quincy, MA 02269.  
Cutting And  
Welding Processes, NFPA Standard 51B, from National  
Fire Protection Association, Batterymarch Park, Quincy, MA 02269.  
1-6. EMF Information  
Considerations About Welding And The Effects Of Low Frequency  
Electric And Magnetic Fields  
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.  
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.”  
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 also recommended for pacemaker  
wearers. Consult your doctor for complete information.  
OM-175 104 Page 3  
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SECTION 2 – DEFINITIONS  
2-1. Symbol Definitions  
Fast  
Fast/Slow  
(Run/Idle)  
Stop Engine  
Slow (Idle)  
Volts  
(Run, Weld/Power)  
Read Operator’s  
Manual  
Start Engine  
Engine Oil  
Amperes  
A
V
Fuel  
Battery (Engine)  
Engine  
Check Valve  
Clearance  
Do not switch  
while welding  
Engine Choke  
Positive  
W
ork Connection  
Alternating Current  
(AC)  
Negative  
Output  
Gas Metal Arc  
Shielded Metal Arc  
W
elding Arc  
Gas Tungsten Arc  
elding (TIG)  
W
elding (GMAW),  
W
elding (SMAW),  
(Electrode)  
W
Wire  
Stick  
Protective Earth  
(Ground)  
Hours  
Seconds  
Time  
h
s
Temperature  
Circuit Breaker  
OM-175 104 Page 4  
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SECTION 3 – INSTALLATION  
3-1. Installing Welding Generator  
Movement  
Airflow Clearance  
Location  
18 in  
(460 mm)  
18 in  
(460 mm)  
18 in  
(460 mm)  
OR  
OR  
18 in  
(460 mm)  
18 in  
(460 mm)  
Grounding  
1
2
3
Generator Base  
3
Metal Vehicle Frame  
1
GND/PE  
4
Equipment Grounding  
Terminal  
4
Grounding Cable  
OR  
Use #10 AWG or larger insulated  
copper wire.  
Electrically bond generator frame to  
vehicle frame by metal-to-metal  
contact.  
2
2
install1* 3/96 – Ref. ST-800 652 / Ref. ST-800 477-A / ST-158 936-A / S-0854  
3-2. Dimensions, Weights, And Operating Angles  
Dimensions  
A
B
Height  
Width  
Depth  
A
31 in (787 mm)  
18-3/4 in (476 mm)  
46 in (1164 mm)  
18 in (457 mm)  
C
Y
Y
Do not exceed operating angles while  
running or engine damage will occur  
.
Do not move or operate unit where it could  
tip.  
D
G
4 Holes  
E
25°  
F
B
16-1/2 in (419 mm)  
3/4 in (19 mm)  
25°  
25°  
25°  
C
D
E
F
3-1/8 in (79 mm)  
32-3/4 in (832 mm)  
45-1/2 in (1156 mm)  
13/32 in (10 mm) Dia.  
angles_1 3/96  
Weight  
Engine End  
Net: 567 lb (258 kg)  
Ship: 608 lb (276 kg)  
ST-800 426  
G
OM-175 104 Page 5  
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3-3. Fuel Consumption  
2.0  
1.8  
1.5  
1.3  
1.0  
0.8  
0.5  
0.3  
0.0  
1.67  
1.46  
7.57  
6.62  
5.67  
4.73  
3.78  
2.84  
1.89  
0.95  
AUX POWER  
3750 RPM  
DC WELD  
3750 RPM  
1.25  
1.04  
AC WELD  
3750 RPM  
0.84  
0.63  
0.42  
0.21  
CV WELD  
3750 RPM  
IDLE  
2200 RPM  
0
0
25  
50  
75 100 125 150 175 200 225 250 275  
WELD AMPERES AT 100% DUTY CYCLE  
1.0  
2.0 3.0 4.0  
5.0 6.0 7.0 8.0 9.0 10.0 11.0  
POWER KVA AT 100% DUTY CYCLE  
Ref. SB-179 939  
3-4. Engine Prestart Checks  
Check all fluids daily. Engine must  
be cold and on a level surface. Unit  
is shipped with 10W30 engine oil.  
1
Low Oil Pressure Shutdown  
Switch  
Engine stops if oil pressure gets  
too low  
.
Full  
2
Anti-Icing Control  
Use control to prevent carburetor  
icing in cold weather  
.
1/2 in  
(13 mm)  
2
Full  
Below  
Above  
Gasoline  
45°F  
(7°C)  
1
Ref. ST-801 188-A / Ref. ST-801 221  
OM-175 104 Page 6  
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3-5. Connecting The Battery  
Y
Connect (–) cable last.  
+
Tools Needed:  
3/8, 1/2 in  
Ref. ST-800 394-B / Ref. ST-178 079-A / Ref. S-0756-D  
3-6. Weld Output Terminals And Selecting Cable Sizes  
Y
ARC WELDING can cause Electromagnetic Interference.  
To reduce possible interference, keep weld cables as short as possible, close together, and down low, such as on the  
floor. Locate welding operation 100 meters from any sensitive electronic equipment. Be sure this welding machine is  
installed and grounded according to this manual. If interference still occurs, the user must take extra measures such  
as moving the welding machine, using shielded cables, using line filters, or shielding the work area.  
Total Cable (Copper) Length In Weld Circuit Not Exceeding  
150 ft  
(45 m)  
200 ft  
(60 m)  
250 ft  
(70 m)  
300 ft  
350 ft  
400 ft  
100 ft (30 m) Or Less  
10 – 60% 60 – 100%  
(90 m) (105 m) (120 m)  
Welding  
Amperes  
Weld Output Terminals  
Duty  
Cycle  
Duty  
Cycle  
10 – 100% Duty Cycle  
100  
150  
200  
250  
300  
350  
4
3
4
3
4
2
3
2
1/0  
1
1/0  
3/0  
1/0  
3/0  
1
2/0  
3
2
1
1/0  
2/0  
3/0  
4/0  
2/0  
3/0  
4/0  
4/0  
2
1
1/0  
2/0  
3/0  
3/0  
4/0  
2-2/0  
2-3/0  
2-3/0  
2-2/0  
2-3/0  
1
1/0  
2/0  
4/0  
2-2/0  
2-3/0  
WORK ELECTRODE  
1/0  
2-2/0  
2-4/0  
ST-800 396-A  
Weld cable size (AWG) is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere.  
S-0007-D  
OM-175 104 Page 7  
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SECTION 4 – OPERATING WELDING GENERATOR  
4-1. Front Panel Controls  
4
5
1
6
2
3
Ref. ST-178 079-A  
1
Engine Control Switch  
gine starts. Do not crank engine if engine is  
Use switch to select weld amperage range  
when Weld Process Selector switch is in  
Stick/Tig position, or voltage range when  
switch is in Wire position.  
still turning. Set anti-icing control (see Sec  
tion 3-4).  
-
Use switch to start engine, select speed,  
and stop engine. In Run/Idle position, en-  
gine runs at idle speed at no load, and weld/  
power speed under load. In Run position,  
engine runs at weld/power speed.  
To Stop: turn Engine Control switch to Off  
position.  
. For best arc starts, use lowest amper-  
age range possible.  
3
Weld Process Selector Switch  
5
Fine Adjust Control  
. Place switch in Run position to operate  
Use switch to select type of weld output.  
Use control to select weld amperage (Stick/  
Tig) or voltage (Wire) within the range se-  
lected by the Coarse Adjust switch. Control  
may be adjusted while welding. Weld output  
would be 110 A DC based on control set-  
tings shown (50% of 70 to 150 A).  
most GMAW equipment.  
Use a positive (+) position for Direct Current  
Electrode Positive (DCEP) and a negative  
(–) position for Direct Current Electrode  
Negative (DCEN). Use AC position for alter  
nating current.  
2
Engine Choke Control  
Use control to change engine air-fuel mix.  
-
To Start: pull out choke and turn Engine  
Control switch to Start position. Release  
switch and slowly push choke in when en-  
4
Coarse Adjust Switch  
6
Engine Hour Meter  
OM-175 104 Page 8  
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4-2. Duty Cycle  
Duty cycle is the percentage of 10  
minutes that unit can weld at rated  
load without overheating.  
Y
Exceeding duty cycle can  
damage unit and void war-  
ranty.  
100% Duty Cycle at 225 Amperes AC, 210 Amperes CC/DC, 200 Amperes CV/DC  
Continuous  
Welding  
SB-119 454-A  
OM-175 104 Page 9  
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SECTION 5 – OPERATING AUXILIARY EQUIPMENT  
5-1. Standard Receptacles  
. Auxiliary power decreases as  
weld current increases.  
Set Fine Adjust control R1 at  
10 for full auxiliary power  
.
1
120 V 15 A AC Receptacles  
GFCI-2 And GFCI-3  
GFCI-2 and GFCI-3 supply 60 Hz  
single-phase power at weld/power  
speed. Maximum output from each  
receptacle is 2.4 kVA/kW (CSA:  
1.8 kVA/kW).  
3
4
If a ground fault is detected, Reset  
button pops out and the circuit  
opens to disconnect the faulty  
equipment. Check for faulty tools,  
1
cords, etc. connected to the recep  
-
tacle. Press reset button to resume  
operation.  
2
. At least once a month, run en-  
gine at weld/power speed and  
press Test button to verify  
GFCI is working properly  
.
2
240 V 50 A AC Receptacle  
RC1  
RC1 supplies 60 Hz single-phase  
power at weld/power speed. Maxi  
mum output is 8 kVA/kW.  
-
3
Circuit Breakers CB1 And  
CB2  
CB1 and CB2 protect RC1 from  
overload. If CB1 or CB2 opens,  
RC1 and one of the 120 volt recep  
-
tacles does not work. 120 volts  
may still be present at RC1.  
4
Circuit Breakers CB3 And  
CB4  
CB3 and CB4 protect GFCI-2 and  
GFCI-3 from overload. If CB3 or  
CB4 opens, the receptacle does  
not work.  
. If a circuit breaker continues to  
open, contact a Factory Au-  
thorized Service Agent.  
Total output of receptacles limited  
to 8 kVA/kW. Example: If 20 A is  
drawn from GFCI-2 and GFCI-3,  
only 13 A is available at RC1:  
2
=
x (120 V x 20 A) + (240 V x 13 A)  
7.9 kVA/kW  
Ref. ST-178 079-A  
OM-175 104 Page 10  
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5-2. Optional Auxiliary Power Receptacles  
Y
If unit does not have GFCI  
receptacles, use GFCI-pro-  
tected extension cord.  
. Auxiliary power decreases as  
weld current increases.  
Set Fine Adjust control R1 at  
10 for full auxiliary power  
.
1
Combined output of all receptacles  
limited to 8 kVA/kW rating of the  
generator.  
120 Volt Receptacle Option  
1
120 V 15 A AC Receptacles  
RC2 And RC3  
RC2 and RC3 supply 60 Hz single-  
phase power at weld/power speed.  
Maximum output from RC2 or RC3  
is 2.4 kVA/kW (CSA: 1.8 kVA/kW).  
Circuit breaker protection is the  
same as standard receptacles.  
South African And Australian  
Receptacle Options  
2
240 V 16 A AC South African  
Receptacles RC1, RC2, And  
RC3  
4
3
240 V 15 A AC Australian  
Receptacles RC1, RC2, And  
RC3  
Receptacles supply 60 Hz single-  
phase power at weld/power speed.  
5
Maximum output from each recep  
tacle is 3.6 kVA/kW.  
-
4
Circuit Breakers CB1, CB2,  
CB3  
CB1, CB2, and CB3 protect RC1,  
RC2, and RC3 from overload. If a  
circuit breaker opens, the recep-  
tacle does not work. Press button  
to reset breaker  
.
2
5
Circuit Breaker CB4  
CB4 protects all the receptacles  
from overload. If CB4 opens, none  
of the receptacles work.  
. If a circuit breaker continues to  
open, contact a Factory Au-  
thorized Service Agent.  
4
5
3
Ref. ST-172 786-B / Ref. ST-181 714  
OM-175 104 Page 1  
1
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5-3. Wiring Optional 240 Volt Plug  
The plug can be wired for a 240 V  
,
2-wire load or a 120/240V, 3-wire  
load. See circuit diagram.  
1
Plug Wired For 120/240 V  
3-Wire Load  
,
7
When wired for 120 V loads, each  
duplex receptacle shares a load  
with one half of 240 V receptacle.  
Current Available In Amperes  
240 V  
Receptacle*  
Each 120 V Duplex  
Receptacle  
2
Plug Wired For 240 V, 2-Wire  
Load  
1
3
4
5
6
7
Neutral (Silver) Terminal  
Load 1 (Brass)Terminal  
Load 2 (Brass) Terminal  
Ground (Green) Terminal  
3
35  
30  
25  
20  
15  
0
5
10  
15  
20  
4
Amperes Available Using  
120/240 V Plug  
V x A = Watts  
*One 240 V load or two 120 V loads.  
120V  
5
120V  
240V  
6
2
3
4
240V  
6
5
Tools Needed:  
ST-120 813-D  
OM-175 104 Page 12  
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SECTION 6 – MAINTENANCE AND TROUBLESHOOTING  
6-1. Routine Maintenance  
Y
Stop engine before maintaining.  
. See also Engine Manual and mainte-  
nance label. Service engine more often  
if used in severe conditions.  
Recycle engine  
fluids.  
8 h  
Check Fluid  
Levels.  
See Section 3-4.  
Wipe Up  
Spills.  
20 h  
Check And  
Clean Optional  
Spark Arrestor  
Screen. See  
Section 6-7.  
Service Air  
Cleaner Foam  
Element. See  
Section 6-3.  
50 h  
Clean And  
ighten Weld  
Terminals.  
T
100 h  
Check Air  
Cleaner  
Paper  
Element. See  
Section 6-3.  
Change Oil. See  
Check  
Spark  
Plugs.  
Section 6-4 And  
Maintenance  
Label.  
Clean Cooling  
Clean And  
Tighten  
Battery  
System.  
See Engine  
Manual.  
Connections.  
200 h  
500 h  
Change Oil  
Filter. See Section  
6-4 And  
Maintenance  
Label.  
Replace  
Replace  
Unreadable  
Labels.  
Fuel Filter  
See Section  
6-4.  
.
Repair Or Replace  
Cracked Cables.  
1000 h  
Blow Out Or Vacuum Inside.  
During Heavy Service,  
Clean Monthly  
OR  
.
OM-175 104 Page 13  
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6-2. Maintenance Label  
KOHLER CH18 GAS ENGINE  
Air Filter Service  
Air Filter Element  
.
.
. . . 100 hours or less – see  
Owner’s Manual  
. . . MILLER 067 272,  
Kohler 4708303  
See Engine Manual for complete engine care. Give  
engine Specification and Serial Number when ordering  
parts.  
Air Filter Wrapper . . . . MILLER 067 273,  
Kohler 2408302  
Check  
daily.  
°C  
°F  
+100  
+30  
+20  
+10  
0
12 Volt Battery  
.
. . . . . BCI Group 58  
+
Cranking Performance at 0°F (-18°C) . . . . 430 Amps  
min.  
T
o Drain Oil:  
+32  
0
Push And  
Turn CCW  
-10  
-20  
-30  
1/2 in. ID Hose  
Pull  
Engine RPM – No Load  
Weld/Power . 3700  
Idle . . . . . . . . . 2200  
Recommended Oil  
Oil Change . . . . . . . . 100 hours  
Oil Filter Change . . . 200 hours  
Oil Filter . . . . . . . . . . . MILLER 066 698, Kohler 1205001  
.
. . API Service Classification SF-SG/CC-CD  
.
.
Spark Plug Gap  
.
. . . . 0.040 in. (1.02 mm)  
.
Spark Plug . . . . . . . . Champion RC-12YC  
.
Oil Capacity . . . . . . . . 1.75 qt (1.7 L) or 2 qt (1.9 L) with filter  
change  
Use only resistor spark plugs and wires.  
Fuel Capacity  
.
. . . . . . 8.5 gal (32.2 L)  
Fuel Grade  
Fuel Filter  
.
. . . . . . . . Unleaded, 87 Octane min.  
Spark Arrestor Inspection And Service . . . . . . . . . . .  
20 operating hours - see Owners Manual  
.
. . . . . . . . . MILLER 066 113,  
Kohler 2505003  
Gasoline  
S-173 088  
6-3. Servicing Air Cleaner  
Y
Y
Stop engine.  
1
2
Do not run engine without  
air cleaner or with dirty ele-  
ment.  
1
Precleaner  
Wash precleaner with soap and  
water solution. Allow precleaner to  
air dry completely  
.
Spread 1 tablespoon SAE 30 oil  
evenly into precleaner. Squeeze  
out excess oil.  
2
Element  
Replace element if dirty or oily  
.
oil  
aircleaner3 6/96 – ST-156 852 / Ref. ST-178 079-A / S-0759  
OM-175 104 Page 14  
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6-4. Changing Engine Oil, Oil Filter, And Fuel Filter  
Y
1
Stop engine and let cool.  
Oil Drain Valve  
1/2 ID x 12 in Hose  
Oil Filter  
2
3
4
Oil Fill Cap  
5
Oil Dipstick  
Change engine oil and filter ac-  
cording to engine owner s manual.  
Y
Close valve and valve cap  
before adding oil and run-  
ning engine.  
Fill crankcase with new oil to full  
mark on dipstick (see Section 6-2).  
4
6
7
Fuel Filter  
Fuel Line  
Replace line if cracked or worn.  
Install new filter. Wipe up any  
spilled fuel.  
Start engine, and check for fuel  
leaks.  
6
7
Y
Stop engine, tighten con-  
nections as necessary, and  
wipe up fuel.  
3
2
5
1
Tools Needed:  
Ref. ST-801 188-A / Ref. ST-801 221 / Ref. ST-178 079-A / ST-800 395 / S-0842  
OM-175 104 Page 15  
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6-5. Adjusting Engine Speed  
After tuning engine, check engine  
speeds with a tachometer (see  
table). If necessary, adjust speeds  
as follows:  
2200 ± 50 rpm  
Start engine and run until warm.  
Turn Fine Adjust control to 10.  
3700 ± 50 rpm  
Idle Speed Adjustment  
Move Engine Control switch to  
Run/Idle position.  
1
1
2
3
Throttle Solenoid  
Mounting Screws  
Idle Speed Screw  
Loosen mounting screws. Adjust  
solenoid position so engine runs at  
idle speed. If necessary, back out  
idle speed screw so solenoid can  
be moved to correct position.  
Tighten mounting screws. Be sure  
5
2
4
solenoid linkage works smoothly  
.
Turn idle speed screw for fine ad-  
justments.  
Weld/Power Speed Adjustment  
Move Engine Control switch to Run  
position.  
4
Weld/Power Speed Adjust  
ment Nut  
-
5
Lock Nut  
Loosen lock nut. Turn adjustment  
nut until engine runs at weld/power  
3
speed.  
Tighten lock nut.  
Y
Stop engine.  
Top View  
Tools Needed:  
1/4, 3/8 in  
Ref. ST-801 188-A / ST-801 209-A  
OM-175 104 Page 16  
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6-6. Overload Protection  
Y
Stop engine.  
1
Fuse F1 (See Parts List)  
F1 protects the generator excita-  
tion circuit. If F1 opens, there will  
be no/low weld and auxiliary power  
output.  
1
2
Fuse F6 (See Parts List)  
F6 protects the engine wiring har-  
ness. If F6 opens, the engine does  
not crank.  
Replace any open fuses. Reinstall  
panel before operating unit.  
. If any fuse continues to open,  
contact Factory Authorized  
Service Agent.  
2
Tools Needed:  
3/8 in  
ST-801 226-A / Ref. ST-801 221  
6-7. Inspecting And Cleaning Optional Spark Arrestor  
Y
Stop engine and let cool.  
1
Spark Arrestor Screen  
Clean and inspect screen. Re-  
place spark arrestor if screen wires  
are broken or missing.  
1
Tools Needed:  
1/4 in  
ST-801 206 / Ref. ST-801 221 / Ref. ST-172 782-A  
OM-175 104 Page 17  
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6-8. Troubleshooting  
A. Welding  
Trouble  
Remedy  
No weld output.  
Check control settings.  
Check weld connections.  
Check fuse F1 and replace if open (see Section 6-6).  
Be sure all equipment is disconnected from receptacles when starting unit.  
Have Factory Authorized Service Agent check brushes, slip rings, and integrated rectifier SR2.  
Check plug PLG6 connection.  
Low weld output.  
Check fuse F1 and replace if open (see Section 6-6).  
Check control settings.  
Check and adjust engine speed (see Section 6-5).  
Service air cleaner according to engine manual.  
Have Factory Authorized Service Agent check brushes and slip rings.  
Check control settings.  
High weld output.  
Check and adjust engine speed (see Section 6-5).  
Check control settings.  
Erratic weld output.  
Tighten and clean connections to electrode and workpiece.  
Use dry, properly-stored electrodes for SMAW and GTAW.  
Remove excessive coils from weld cables.  
Tighten and clean connections both inside and outside welding generator.  
Check and adjust engine speed (see Section 6-5).  
Have Factory Authorized Service Agent check brushes and slip rings.  
B. Auxiliary Power  
Trouble  
Remedy  
No output at auxiliary power recep  
tacles.  
-
Reset circuit breakers (see Sections 5-1 and 5-2).  
Press receptacle Reset button (see Section 5-1).  
Check fuse F1 and replace if open (see Section 6-6).  
Check plug PLG6 connection.  
Have Factory Authorized Service Agent check brushes, slip rings, and integrated rectifier SR2.  
Check and adjust engine speed (see Section 6-5).  
Check fuse F1 and replace if open (see Section 6-6).  
Increase Fine Adjust control R1 setting.  
High power output.  
Low power output.  
Erratic power output.  
Check fuel level.  
Check and adjust engine speed (see Section 6-5).  
Check receptacle wiring and connections.  
Have Factory Authorized Service Agent check brushes and slip rings.  
OM-175 104 Page 18  
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C. Engine  
Trouble  
Remedy  
Check fuse F6, and replace if open (see Section 6-6).  
Check battery voltage.  
Engine will not crank.  
Check battery connections and tighten if necessary  
.
Check plug PLG4 and plug PLG8 connections.  
Have Factory Authorized Service Agent check Engine Control switch S2.  
Check fuel level.  
Engine will not start.  
Check battery voltage.  
Check battery connections and tighten if necessary  
.
Check oil level. Check low oil pressure shutdown switch (see Section 3-4).  
Have Factory Authorized Service Agent check fuel shutoff solenoid FS1.  
Check oil level. Check low oil pressure shutdown switch (see parts list for location).  
Engine starts but stops when Engine  
Control switch returns to Run position.  
Check and refill crankcase with proper viscosity oil for operating temperature, if necessary  
.
Engine stopped during normal opera  
-
Check fuel level.  
tion.  
Check oil level. Check low oil pressure shutdown switch (see Section 3-4).  
Periodically recharge battery (approximately every 3 months).  
Replace battery  
.
Check voltage regulator and connections according to engine manual.  
Have Factory Authorized Service Agent check fuel shutoff solenoid FS1.  
Battery Discharges between uses.  
Clean battery, terminals, and posts with baking soda and water solution; rinse with clear water  
.
Periodically recharge battery (approximately every 3 months).  
Replace battery  
.
Check voltage regulator and connections according to engine manual.  
Engine idles but does not come up to  
weld speed.  
Have Factory Authorized Service Agent check auto idle module PC1, and current transformer CT1.  
Unstable or sluggish engine speeds.  
Readjust throttle linkage if necessary. Check throttle solenoid TS1 for smooth operation.  
Tune-up engine according to engine manual.  
Engine does not return to idle speed.  
Remove weld and auxiliary power loads.  
Check throttle linkage for smooth, non-binding operation.  
Have Factory Authorized Service Agent check idle module PC1, current transformer CT1, Engine Con  
trol switch S2, and throttle solenoid TS1.  
-
OM-175 104 Page 19  
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SECTION 7 – ELECTRICAL DIAGRAM  
SB-180 690-B  
Figure 7-1. Circuit Diagram For Welding Generator  
OM-175 104 Page 20  
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SECTION 8 – PARTS LIST  
ST-801 432-B  
Figure 8-1. Main Assembly  
OM-175 104 Page 22  
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Item  
No.  
Dia.  
Mkgs.  
Part  
No.  
Description  
Quantity  
Figure 8-1. Main Assembly  
.
.
.
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.
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. .  
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. .  
1
1
2
3
3
4
5
6
7
8
9
. . . . . . . . . . . . +159 907 . . . COVER, top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . +169 441 . . . COVER, top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . 108 487 . . . LABEL, warning: falling equipment can cause serious injury . . . . . . . . . . .  
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
2
1
4
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
. . . . . . . . . . . . . . 169 329 . . .  
. . . . . . . . . . . . 169 442 . . .  
P
ANEL, side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
PANEL, side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . 159 914 . . . UPRIGHT, base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . 168 640 . . . SEAL, tank fuel filler neck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . 164 928 . . . SEAL, barrel 11.78 ID x .378thk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . 178 497 . . . PANEL, rear lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . 147 601 . . . CAP, tank screw-on w/vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . 178 498 . . . TANK, fuel 8.5gal (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 10 . . . . . . . . . . . . . . 178 632 . . . . . FITTING, stand pipe hose .250 x 7.325 lg . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 11 . . . . . . . . . . . . . . 121 652 . . . FILTER KIT, fuel w/clamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 12 . . . . . . . . . . . . . . 173 088 . . . LABEL, engine maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 13 . . . . . . . . . . . . . . 173 065 . . . MUFFLER, exhaust engine w/heat shield (Included w/engine) . . . . . . . . .  
. . 14 . . . . . . . . . . . . +173 042 . . . ENGINE, gas elec start (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 15 . . . . . . . . . . . . . . 165 271 . . . . . VALVE, oil drain 3/8-18NPTF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . TS1 . . . . . . . . . . . . . . . . . . SOLENOID, 14VDC .53A (see engine parts list) . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BRACKET, mtg solenoid (see engine parts list) . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . . 180 096 . . . TUNE-UP & FILTER KIT, (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . . 066 698 . . . . . OIL FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . . 121 652 . . . . . FILTER/CLAMPS, fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . . 067 272 . . . . . ELEMENT, air cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . . 067 273 . . . . . AIR FILTER, wrapper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . . 067 007 . . . . . SPARK PLUG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 16 . . . . . . . . . . . . . . . Fig 8-3 . . . GENERATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 24 . . . . . . . . . . . . . . 182 361 . . . KIT, holddown battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 18 . . . . . . . . . . . . . . 168 385 . . . LABEL, warning battery explosion can blind . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 19 . . . . . . . . . . . . +159 917 . . . DOOR, access battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 20 . . . . . . . . . . . . . . 173 921 . . . CABLE, bat pos (included w/engine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 21 . . . . . . . . . . . . . . 168 037 . . . BATTERY, stor 12V 430crk 75rsv GP58 dry . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 22 . . . . . . . . . . . . . . 082 319 . . . CABLE, bat neg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . . 172 669 . . . CABLE, bat neg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 23 . . . . . . . . . . . . . . 173 043 . . . BRACKET, mtg engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 24 . . . . . . . . . . . . . . 165 660 . . . BRACKET, mtg generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 25 . . . . DC-Z . . . . 165 578 . . . STABILIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 26 . . . . AC-Z . . . . 176 301 . . . REACTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 27 . . . . . . . . . . . . . . 164 920 . . . BRACKET, mtg stab/reactor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 28 . . . . . . . . . . . . . . 159 906 . . . PAN, base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 29 . . . . . . . . . . . . . . 160 844 . . . COVER, base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 30 . . . . . . . . . . . . +180 628 . . . PANEL, front lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 31 . . . . . . . . . . . . . . . Fig 8-2 . . . PANEL, front w/components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 32 . . . . SR1 . . . . 142 503 . . . RECTIFIER, si 1 ph 300A 400PIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 33 . . . . . . . . . . . . . . 173 734 . . . LINK, jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 34 . . . . . 1T . . . . . 172 661 . . . BLOCK, stud connection 6 position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 35 . . . . . D4 . . . . . 135 184 . . . DIODE BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 36 . . . . SR2 . . . . 035 704 . . . RECTIFIER, integ 40A 800V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 37 . . . . . . . . . . . . . . 172 731 . . . HOLDER, fuse mintr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 38 . . . . . F1 . . . . *169 296 . . . FUSE, mintr gl 25A 125V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 39 . . . . . C1 . . . . . 176 719 . . . CAPACITOR, elctlt 1000uf 75VDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 40 . . . . . . . . . . . . . . 177 136 . . . CLAMP, capacitor 2.500dia clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 41 . . . . CT1 . . . . . 179 494 . . . TRANSFORMER, current sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 42 . . . . . R2 . . . . . 165 599 . . . RESISTOR, WW adj 225W 0-6 ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . RC4 . . . . 116 045 . . . CONNECTOR & PINS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . PLG6 . . . . 136 810 . . . CONNECTOR & PINS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . PLG4 . . . . . . . . . . . . . . . CONNECTOR, (see engine parts list) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . RC6 . . . . 168 844 . . . CONNECTOR, rect 4 pin/skt rcpt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 43 . . . . . . . . . . . . . . 134 792 . . . LABEL, warning general precautionary . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
+When ordering a component originally displaying a precautionary label, the label should also be ordered.  
Part of Optional 043 051 Stainless Steel kit.  
*Recommended Spare Parts.  
BE SURE TO PROVIDE MODEL AND SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.  
OM-175 104 Page 23  
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Item  
No.  
Dia.  
Mkgs.  
Part  
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Description  
Quantity  
Figure 8-2. Panel, Front w/Components (Fig 8-1 Item 44)  
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. . . . . . . S1 . . . . . . 162 671 . . . SWITCH, polarity 5 position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . NAMEPLATE, (order by model and serial number) . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . 165 602 . . . PANEL, front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . S3 . . . . . . 165 487 . . . SWITCH, selector 4 position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . R1 . . . . . . 117 243 . . . RHEOSTAT, WW 100W 10 ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . PC1 . . . . . . 142 724 . . . MODULE, pull to idle 5 pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . S2 . . . . . . 176 606 . . . SWITCH, ignition 4 position w/out handle . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . GFCI2,3 . . . . 147 939 . . . RECEPTACLE, str dx grd 2P3W 15A 125V . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . CB1,2 . . . . . 117 501 . . . CIRCUIT BREAKER, man reset 1P 40A 250VAC . . . . . . . . . . . . . . . . . .  
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. . 10 . . . . . CB3,4 . . . . . 093 996 . . . CIRCUIT BREAKER, man reset 1P 20A 250VAC . . . . . . . . . . . . . . . . . .  
. . 11 . . . . . . HM . . . . . . 145 247 . . . METER, hour 12-24VDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 12 . . . . . . . . . . . . . . . . . 175 010 . . . CONTROL, push/pull . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 13 . . . . . . . . . . . . . . . . . 119 014 . . . LEVER, switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 14 . . . . R3,VR1 . . . . 046 819 . . . SUPPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 15 . . . Work, Elect . . 099 255 . . . TERMINAL, pwr output neutral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 16 . . . . . . RC1 . . . . . . 164 704 . . . RECEPTACLE, str 3P4W 50A 125/250V . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 17 . . . . . . . . . . . . . . . . . 083 030 . . . STUD, brs .250-20 x 1.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 18 . . . . . . . . . . . . . . . . . 010 915 . . . WASHER, flat .250 ID brs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 19 . . . . . . . . . . . . . . . . . 601 836 . . . NUT, .250-20 brs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 20 . . . . . . . . . . . . . . . . . 159 921 . . . BEZEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 21 . . . . . . . . . . . . . . . . . 147 195 . . . NUT, .375-27 nyl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 22 . . . . . . . . . . . . . . . . . 148 956 . . . HANDLE, switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 23 . . . . . . . . . . . . . . . . . 097 924 . . . KNOB, pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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ST-800 816-A  
15  
Figure 8-2. Panel, Front w/Components  
BE SURE TO PROVIDE MODEL AND SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.  
OM-175 104 Page 24  
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Item  
No.  
Part  
No.  
Description  
Quantity  
Figure 8-3. Generator (Fig 8-1 Item 21)  
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. . . . 013 367 . . LABEL, warning moving parts can cause serious injury . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . 165 818 . . LABEL, warning engine fuel can cause fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . +179 500 . . STATOR, generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . 159 909 . . ROTOR, generator (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . 053 390 . . . . BEARING, ball rdl sgl row 1.370 x 2.830 x .6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . 160 566 . . . . FAN, rotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . 172 683 . . ADAPTER, engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . 142 156 . . SCREW, .375-16 x 1.750hexhd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . 160 573 . . STUD, stl .375-16 x 17.125 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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. . 10 . . . . 125 548 . . HOLDER, brush elect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 11 . . . . 005 614 . . HOLDER, brush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 12 . . . *126 984 . . BRUSH w/SPRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 13 . . . . 161 306 . . CAP, brushholder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 14 . . . . 047 879 . . BAR, retaining brushholder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 15 . . . . 010 910 . . WASHER, flat .406 ID stl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 16 . . . . 010 909 . . NUT, .375-16 stl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 17 . . . . 160 943 . . ENDBELL, (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . 18 . . . . 143 220 . . . . O-RING, 2.859 ID x .139CS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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8
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14  
15  
ST-800 798  
16  
Figure 8-3. Generator  
+When ordering a component originally displaying a precautionary label, the label should also be ordered.  
*Recommended Spare Parts.  
BE SURE TO PROVIDE MODEL AND SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.  
OM-175 104 Page 25  
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