Lincoln Electric IM996 User Manual

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For Machines with Code Numbers 11547, 11548, 11642, 11643, 11811, 11812

Safety Depends on You

Lincoln arc welding and cutting
equipment is designed and
built with safety in mind.
However, your overall safety
can be increased by proper
installation ... and thoughtful
operation on your part. DO

NOT INSTALL, OPERATE OR
REPAIR THIS EQUIPMENT
WITHOUT READING THIS
MANUAL AND THE SAFETY
PRECAUTIONS CONTAINED
THROUGHOUT. And, most

importantly, think before you
act and be careful.

®

300D KUBOTA

IM996-B

August, 2012

• World's Leader in Welding and Cutting Products • • Sales and Service through Subsidiaries and Distributors Worldwide •

Cleveland, Ohio 44117-1199 USA TEL: [phone]

For Service in the USA and Canada: Call 1.888.935.3877 For Service outside the USA: Email [e-mail]

OPERATOR’S MANUAL

Copyright © Lincoln Global Inc.

FAX: [phone] WEB SITE: lincolnelectric.com

i

SAFETY

i

WARNING

CALIFORNIA PROPOSITION 65 WARNINGS

Diesel engine exhaust and some of its constituents
are known to the State of California to cause can­cer, birth defects, and other reproductive harm.

The Above For Diesel Engines

ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH.
KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.

Read and understand the following safety highlights. For additional safety information, it is strongly recommended that you
purchase a copy of “Safety in Welding & Cutting - ANSI Standard Z49.1” from the American Welding Society, P.O. Box
351040, Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available
from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.

BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE
PERFORMED ONLY BY QUALIFIED INDIVIDUALS.

The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects, or other reproductive harm.

The Above For Gasoline Engines

FOR ENGINE
powered equipment.

1.a. Turn the engine off before troubleshooting and maintenance
work unless the maintenance work requires it to be running.

____________________________________________________

1.b. Operate engines in open, well-ventilated
areas or vent the engine exhaust fumes
outdoors.

____________________________________________________

1.c. Do not add the fuel nea r an open flame
welding arc or when the engine is running.
Stop the engine and allow it to cool before
refueling to prevent spilled fuel from vaporiz­ing on contact with hot engine parts and
igniting. Do not spill fuel when filling tank. If
fuel is spilled, wipe it up and do not start
engine until fumes have been eliminated.

____________________________________________________

1.d. Keep all equipment safety guards, covers and devices in
position and in good repair.Keep hands, hair, clothing and
tools away from V-belts, gears, fans and all other moving
parts when starting, operating or repairing equipment.

____________________________________________________

1.e. In some cases it may be necessary to remove safety

guards to perform required maintenance. Remove
guards only when necessary and replace them when the
maintenance requiring their removal is complete.
Always use the greatest care when working near moving
parts.

___________________________________________________

1.f. Do not put your hands near the engine fan.
Do not attempt to override the governor or
idler by pushing on the throttle control rods
while the engine is running.

1.h. To avoid scalding, do not remove the
radiator pressure cap when the engine is
hot.

ELECTRIC AND
MAGNETIC FIELDS
may be dangerous

2.a. Electric current flowing through any conductor causes
localized Electric and Magnetic Fields (EMF). Welding
current creates EMF fields around welding cables and
welding machines

2.b. EMF fields may interfere with some pacemakers, and
welders having a pacemaker should consult their physician
before welding.

2.c. Exposure to EMF fields in welding may have other health
effects which are now not known.

2.d. All welders should use the following procedures in order to
minimize exposure to EMF fields from the welding circuit:

2.d.1.

Route the electrode and work cables together - Secure
them with tape when possible.

2.d.2. Never coil the electrode lead around your body.

2.d.3. Do not place your body between the electrode and

work cables. If the electrode cable is on your right
side, the work cable should also be on your right side.

___________________________________________________

1.g. To prevent accidentally starting gasoline engines while
turning the engine or welding generator during maintenance
work, disconnect the spark plug wires, distributor cap or
magneto wire as appropriate.

2.d.4. Connect the work cable to the workpiece as close as
possible to the area being welded.

2.d.5. Do not work next to welding power source.

ii

SAFETY

ii

ELECTRIC SHOCK can
kill.

3.a. The electrode and work (or ground) circuits
are electrically “hot” when the welder is on.
Do not touch these “hot” parts with your bare
skin or wet clothing. Wear dry, hole-free

gloves to insulate hands.

3.b. Insulate yourself from work and ground using dry insulation.
Make certain the insulation is large enough to cover your full
area of physical contact with work and ground.

In addition to the normal safety precautions, if welding
must be performed under electrically hazardous
conditions (in damp locations or while wearing wet
clothing; on metal structures such as floors, gratings or
scaffolds; when in cramped positions such as sitting,
kneeling or lying, if there is a high risk of unavoidable or
accidental contact with the workpiece or ground) use
the following equipment:

• Semiautomatic DC Constant Voltage (Wire) Welder.

• DC Manual (Stick) Welder.

• AC Welder with Reduced Voltage Control.

3.c. In semiautomatic or automatic wire welding, the electrode,
electrode reel, welding head, nozzle or semiautomatic
welding gun are also electrically “hot”.

3.d. Always be sure the work cable makes a good electrical
connection with the metal being welded. The connection
should be as close as possible to the area being welded.

3.e. Ground the work or metal to be welded to a good electrical
(earth) ground.

3.f.

Maintain the electrode holder, work clamp, welding cable and
welding machine in good, safe operating condition. Replace
damaged insulation.

3.g. Never dip the electrode in water for cooling.

3.h. Never simultaneously touch electrically “hot” parts of
electrode holders connected to two welders because voltage
between the two can be the total of the open circuit voltage
of both welders.

3.i. When working above floor level, use a safety belt to protect
yourself from a fall should you get a shock.

3.j. Also see Items 6.c. and 8.

ARC RAYS can burn.

4.a. Use a shield with the proper filter and cover
plates to protect your eyes from sparks and
the rays of the arc when welding or observing
open arc welding. Headshield and filter lens
should conform to ANSI Z87. I standards.

4.b. Use suitable clothing made from durable flame-resistant
material to protect your skin and that of your helpers from
the arc rays.

4.c. Protect other nearby personnel with suitable, non-flammable
screening and/or warn them not to watch the arc nor expose
themselves to the arc rays or to hot spatter or metal.

FUMES AND GASES
can be dangerous.

5.a. Welding may produce fumes and gases
hazardous to health. Avoid breathing these
fumes and gases. When welding, keep
your head out of the fume. Use enough
ventilation and/or exhaust at the arc to keep

fumes and gases away from the breathing zone. When

welding with electrodes which require special
ventilation such as stainless or hard facing (see
instructions on container or MSDS) or on lead or
cadmium plated steel and other metals or coatings
which produce highly toxic fumes, keep exposure as
low as possible and within applicable OSHA PEL and
ACGIH TLV limits using local exhaust or mechanical
ventilation. In confined spaces or in some circum­stances, outdoors, a respirator may be required.
Additional precautions are also required when welding
on galvanized steel.

5. b. The operation of welding fume control equipment is affected
by various factors including proper use and positioning of
the equipment, maintenance of the equipment and the spe­cific welding procedure and application involved. Worker
exposure level should be checked upon installation and
periodically thereafter to be certain it is within applicable
OSHA PEL and ACGIH TLV limits.

5.c.

Do not weld in locations near chlorinated hydrocarbon
coming from degreasing, cleaning or spraying operations.
The heat and rays of the arc can react with solvent vapors
form phosgene, a highly toxic gas, and other irritating prod­ucts.

5.d. Shielding gases used for arc welding can displace air and

cause injury or death. Always use enough ventilation,
especially in confined areas, to insure breathing air is safe.

vapors

to

5.e. Read and understand the manufacturerʼs instructions for this

equipment and the consumables to be used, including the
material safety data sheet (MSDS) and follow your
employerʼs safety practices. MSDS forms are available from
your welding distributor or from the manufacturer.

5.f. Also see item 1.b.

iii

SAFETY

iii

WELDING and CUTTING
SPARKS can
cause fire or explosion.

6.a.

Remove fire hazards from the welding area.

If this is not possible, cover them to prevent

Remember that welding sparks and hot
materials from welding can easily go through small cracks
and openings to adjacent areas. Avoid welding near
hydraulic lines. Have a fire extinguisher readily available.

6.b. Where compressed gases are to be used at the job site,
special precautions should be used to prevent hazardous
situations. Refer to “Safety in Welding and Cutting” (ANSI
Standard Z49.1) and the operating information for the
equipment being used.

6.c. When not welding, make certain no part of the electrode
circuit is touching the work or ground. Accidental contact
can cause overheating and create a fire hazard.

6.d. Do not heat, cut or weld tanks, drums or containers until the
proper steps have been taken to insure that such procedures
will not cause flammable or toxic vapors from substances
inside. They can cause an explosion even
been “cleaned”. For information, purchase “Recommended
Safe Practices for the
Containers and Piping That Have Held Hazardous
Substances”, AWS F4.1 from the American Welding Society

(see address above).

6.e. Vent hollow castings or containers before heating, cutting or
welding. They may explode.

Sparks and spatter are thrown from the welding arc. Wear oil

6.f.
free protective garments such as leather gloves, heavy shirt,
cuffless trousers, high shoes and a cap over your hair. Wear
ear plugs when welding out of position or in confined places.
Always wear safety glasses with side shields when in a
welding area.

6.g. Connect the work cable to the work as close to the welding
area as practical. Work cables connected to the building
framework or other locations away from the welding area
increase the possibility of the welding current passing
through lifting chains, crane cables or other alternate cir­cuits. This can create fire hazards or overheat lifting chains
or cables until they fail.

6.h. Also see item 1.c.

the welding sparks from starting a fire.

though

they have

Preparation

for Welding and Cutting of

CYLINDER may explode
if damaged.

7.a.Use only compressed gas cylinders
containing the correct shielding gas for the
process used and properly operating
regulators designed for the gas and

pressure used. All hoses, fittings, etc. should be suitable for
the application and maintained in good condition.

7.b. Always keep cylinders in an upright position securely
chained to an undercarriage or fixed support.

7.c. Cylinders should be located:

• Away from areas where they may be struck or subjected to

physical damage.

• A safe distance from arc welding or cutting operations and

any other source of heat, sparks, or flame.

7.d. Never allow the electrode, electrode holder or any other
electrically “hot” parts to touch a cylinder.

7.e. Keep your head and face away from the cylinder valve outlet
when opening the cylinder valve.

7.f. Valve protection caps should always be in place and hand
tight except when the cylinder is in use or connected for
use.

7.g. Read and follow the instructions on compressed gas
cylinders, associated equipment, and CGA publication P-l,
“Precautions for Safe Handling of Compressed Gases in
Cylinders,” available from the Compressed Gas Association
1235 Jefferson Davis Highway, Arlington, VA 22202.

FOR ELECTRICALLY
powered equipment.

8.a. Turn off input power using the disconnect
switch at the fuse box before working on
the equipment.

8.b. Install equipment in accordance with the U.S. National
Electrical Code, all local codes and the manufacturerʼs
recommendations.

8.c. Ground the equipment in accordance with the U.S. National
Electrical Code and the manufacturerʼs recommendations.

6.I. Read and follow NFPA 51B “ Standard for Fire Prevention
During Welding, Cutting and Other Hot Work”, available
from NFPA, 1 Batterymarch Park, PO box 9101, Quincy, Ma
022690-9101.

6.j. Do not use a welding power source for pipe thawing.

Refer to http://www.lincolnelectric.com/safety for additional safety information.

iv

SAFETY

iv

PRÉCAUTIONS DE SÛRETÉ

Pour votre propre protection lire et observer toutes les instructions
et les précautions de sûreté specifiques qui parraissent dans ce
manuel aussi bien que les précautions de sûreté générales suiv­antes:

Sûreté Pour Soudage A LʼArc

1. Protegez-vous contre la secousse électrique:

a. Les circuits à lʼélectrode et à la piéce sont sous tension

quand la machine à souder est en marche. Eviter toujours
tout contact entre les parties sous tension et la peau nue
ou les vétements mouillés. Porter des gants secs et sans
trous pour isoler les mains.

b. Faire trés attention de bien sʼisoler de la masse quand on

soude dans des endroits humides, ou sur un plancher
metallique ou des grilles metalliques, principalement dans
les positions assis ou couché pour lesquelles une grande
partie du corps peut être en contact avec la masse.

c. Maintenir le porte-électrode, la pince de masse, le câble

de soudage et la machine à souder en bon et sûr état
defonctionnement.

d.Ne jamais plonger le porte-électrode dans lʼeau pour le

refroidir.

e. Ne jamais toucher simultanément les parties sous tension

des porte-électrodes connectés à deux machines à souder
parce que la tension entre les deux pinces peut être le
total de la tension à vide des deux machines.

f. Si on utilise la machine à souder comme une source de

courant pour soudage semi-automatique, ces precautions
pour le porte-électrode sʼapplicuent aussi au pistolet de
soudage.

2. Dans le cas de travail au dessus du niveau du sol, se protéger
contre les chutes dans le cas ou on recoit un choc. Ne jamais
enrouler le câble-électrode autour de nʼimporte quelle partie
du corps.

5. Toujours porter des lunettes de sécurité dans la zone de
soudage. Utiliser des lunettes avec écrans lateraux dans les
zones où lʼon pique le laitier.

6. Eloigner les matériaux inflammables ou les recouvrir afin de
prévenir tout risque dʼincendie dû aux étincelles.

7. Quand on ne soude pas, poser la pince à une endroit isolé de
la masse. Un court-circuit accidental peut provoquer un
échauffement et un risque dʼincendie.

8. Sʼassurer que la masse est connectée le plus prés possible
de la zone de travail quʼil est pratique de le faire. Si on place
la masse sur la charpente de la construction ou dʼautres
endroits éloignés de la zone de travail, on augmente le risque
de voir passer le courant de soudage par les chaines de lev­age, câbles de grue, ou autres circuits. Cela peut provoquer
des risques dʼincendie ou dʼechauffement des chaines et des
câbles jusquʼà ce quʼils se rompent.

9. Assurer une ventilation suffisante dans la zone de soudage.
Ceci est particuliérement important pour le soudage de tôles
galvanisées plombées, ou cadmiées ou tout autre métal qui
produit des fumeés toxiques.

10. Ne pas souder en présence de vapeurs de chlore provenant
dʼopérations de dégraissage, nettoyage ou pistolage. La
chaleur ou les rayons de lʼarc peuvent réagir avec les vapeurs
du solvant pour produire du phosgéne (gas fortement toxique)
ou autres produits irritants.

11. Pour obtenir de plus amples renseignements sur la sûreté,
voir le code “Code for safety in welding and cutting” CSA
Standard W 117.2-1974.

PRÉCAUTIONS DE SÛRETÉ POUR

3. Un coup dʼarc peut être plus sévère quʼun coup de soliel,
donc:

a. Utiliser un bon masque avec un verre filtrant approprié

ainsi quʼun verre blanc afin de se protéger les yeux du ray­onnement de lʼarc et des projections quand on soude ou
quand on regarde lʼarc.

b. Porter des vêtements convenables afin de protéger la

peau de soudeur et des aides contre le rayonnement de
lʻarc.

c. Protéger lʼautre personnel travaillant à proximité au

soudage à lʼaide dʼécrans appropriés et non-inflammables.

4. Des gouttes de laitier en fusion sont émises de lʼarc de
soudage. Se protéger avec des vêtements de protection libres
de lʼhuile, tels que les gants en cuir, chemise épaisse, pan­talons sans revers, et chaussures montantes.

LES MACHINES À SOUDER À
TRANSFORMATEUR ET À
REDRESSEUR

1. Relier à la terre le chassis du poste conformement au code de
lʼélectricité et aux recommendations du fabricant. Le dispositif
de montage ou la piece à souder doit être branché à une
bonne mise à la terre.

2. Autant que possible, Iʼinstallation et lʼentretien du poste seront
effectués par un électricien qualifié.

3. Avant de faires des travaux à lʼinterieur de poste, la debranch­er à lʼinterrupteur à la boite de fusibles.

4. Garder tous les couvercles et dispositifs de sûreté à leur
place.

Thank You

vv

for selecting a QUALITY product by Lincoln Electric. We want you
to take pride in operating this Lincoln Electric Company product

••• as much pride as we have in bringing this product to you!

The business of The Lincoln Electric Company is manufacturing and selling high quality welding equipment, consumables, and cutting equip­ment. Our challenge is to meet the needs of our customers and to exceed their expectations. On occasion, purchasers may ask Lincoln
Electric for advice or information about their use of our products. We respond to our customers based on the best information in our posses­sion at that time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect to such infor­mation or advice. We expressly disclaim any warranty of any kind, including any warranty of fitness for any customerʼs particular purpose,
with respect to such information or advice. As a matter of practical consideration, we also cannot assume any responsibility for updating or
correcting any such information or advice once it has been given, nor does the provision of information or advice create, expand or alter any
warranty with respect to the sale of our products.

Lincoln Electric is a responsive manufacturer, but the selection and use of specific products sold by Lincoln Electric is solely within the control
of, and remains the sole responsibility of the customer. Many variables beyond the control of Lincoln Electric affect the results obtained in
applying these types of fabrication methods and service requirements.

Subject to Change – This information is accurate to the best of our knowledge at the time of printing. Please refer to www.lincolnelectric.com
for any updated information.

CUSTOMER ASSISTANCE POLICY

Please Examine Carton and Equipment For Damage Immediately

When this equipment is shipped, title passes to the purchaser upon receipt by the carrier. Consequently, Claims
for material damaged in shipment must be made by the purchaser against the transportation company at the
time the shipment is received.

Please record your equipment identification information below for future reference. This information can be
found on your machine nameplate.

Product _________________________________________________________________________________

Model Number ___________________________________________________________________________

Code Number or Date Code_________________________________________________________________

Serial Number____________________________________________________________________________

Date Purchased___________________________________________________________________________

Where Purchased_________________________________________________________________________

Whenever you request replacement parts or information on this equipment, always supply the information you
have recorded above. The code number is especially important when identifying the correct replacement parts.

On-Line Product Registration

- Register your machine with Lincoln Electric either via fax or over the Internet.

• For faxing: Complete the form on the back of the warranty statement included in the literature packet
accompanying this machine and fax the form per the instructions printed on it.

• For On-Line Registration: Go to our

Your Product”. Please complete the form and submit your registration.

Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep it
handy for quick reference. Pay particular attention to the safety instructions we have provided for your protection.
The level of seriousness to be applied to each is explained below:

WEB SITE at www.lincolnelectric.com. Choose “Support” and then “Register

WARNING

This statement appears where the information must be followed exactly to avoid serious personal injury or loss of life.

CAUTION

This statement appears where the information must be followed to avoid minor personal injury or damage to this equipment.

vi

TABLE OF CONTENTS

Page

Installation .......................................................................................................Section A

Technical Specifications ........................................................................................A-1

General Description...............................................................................................A-2

Design Features ....................................................................................................A-2

Pre-Operation Installation......................................................................................A-3

Safety Precautions ..........................................................................................A-3

Exhaust Spark Arrester ...................................................................................A-3

Location/Ventilation.........................................................................................A-3

Machine Grounding.........................................................................................A-3

Lift Bail ............................................................................................................A-3

Trailers ............................................................................................................A-4

Polarity Control and Cable Sizes ....................................................................A-4

Pre-Operation Service ...........................................................................................A-4

Oil....................................................................................................................A-4

Fuel .................................................................................................................A-4

Cooling System ...............................................................................................A-4

Battery Charging .............................................................................................A-5

________________________________________________________________________

Operation .........................................................................................................Section B

Engine Operation...................................................................................................B-1

Starting The Kubota V2403M Engine.............................................................B-1

Cold Weather Starting.....................................................................................B-1

High Altitude Operation ...................................................................................B-1

Stopping the engine ........................................................................................B-1

Break-In...........................................................................................................B-1

Welder Operation...................................................................................................B-2

Duty Cycle.......................................................................................................B-2

Control of Welding Current..............................................................................B-2

Idler Operation ................................................................................................B-3

Auxiliary Power ...............................................................................................B-3

Fuel Consumption Data ..................................................................................B-3

________________________________________________________________________

Accessories.....................................................................................................Section C

Optional Features (Field Installed) ........................................................................C-1

________________________________________________________________________

Maintenance ....................................................................................................Section D

Safety Precautions ................................................................................................D-1

General Instructions ..............................................................................................D-1

Cooling System .....................................................................................................D-1

Bearings ................................................................................................................D-1

Commutator and Brushes .....................................................................................D-1

Idler Maintenance..................................................................................................D-2

Nameplates ...........................................................................................................D-2

Purging Air from Fuel System................................................................................D-2

Engine Service Chart ............................................................................................D-3

GFCI Module Testing and Restting Procedure......................................................D-4

________________________________________________________________________

Troubleshooting..............................................................................................Section E

Safety Precautions.................................................................................................E-1

Welder Troubleshooting ........................................................................................E-2

Electronic Idler Troubleshooting Guide...........................................................E-3,E-4

Engine Troubleshooting Guide ...............................................................E-5, E-6,E-7

________________________________________________________________________

Diagrams ..........................................................................................................Section F

Wiring Diagrams ..............................................................................F-1, F-2, F-3, F-4

Dimension Print......................................................................................................F-5

________________________________________________________________________

Parts List.............................................................................P-231, P-595, P-682, Series

vi

A-1

INSTALLATION

TECHNICAL SPECIFICATIONS - CLASSIC® 300D KUBOTA

INPUT - DIESEL ENGINE

Make/Model Description Speed (RPM) Displacement Starting Capacities

System

4 Cylinder
4 Cycle 148.53 cu. in

Naturally Aspirated (2.43 ltrs) (Group 24, 650

Kubota Water-Cooled High Idle 1800 cold crank amps)

V2403M Diesel Engine Low Idle 1400 Bore x Stroke

Tier 4 interim Cast Iron Cylinder, Full Load 1800 40 A. Alternator

Compliant Block/Crankcase 3.43” x 4.03” w/ built in reg.

32.5HP @1800 RPM

12VDC battery

1.4 KW

Starter

RATED OUTPUT @ 104°F(40°C) - WELDER

DESCRIPTION RATED DC OUTPUT* Duty DC CURRENT RANGE

VOLTS @ RATED AMPS CYCLE

300 Amp DC Welder 30V @ 250A 100% 160-240

All Copper Windings 32V @ 300A 60% 120-190

Pure DC Power Generator 99V DC Max. OCV @ 1800RPM 80-130

Fine Adjustments in each Range

Fuel:
15 gal.(57 L.)
(Codes 11547, 11548
11642, 11643)

16 gal.(60.6 L.)
(Codes 11811 11812)

Oil: 10.04 Qts. 9.5 L

Coolant: 9.5 Qts. 9.0 L

40-350 Amps

220-Max.

Min.-90

A-1

RATED OUTPUT @ 104°F(40°C) - GENERATOR

(1)

(2)

1320 lbs.
(599 kg)

1355 lbs.
(615 kg)

MODEL HEIGHT WIDTH DEPTH WEIGHT

K1643-9 CSA @ Without

Wire Feed Module

(Code 11547, 11642,

11811)

K1643-10 CSA @ With
Wire Feed Module
(Codes 11548, 11643,

11812)

Auxiliary Power

3,000 Watts Continuous, 60 Hz AC

26 Amps @ 115V
13 Amps @ 230V

PHYSICAL DIMENSIONS

45.5 in. 24.00 in. 66.36 in.
(1156 mm) (610 mm) (1686 mm)

* Based on a 10 min. period.

(1)

Output rating in watts is equivalent to volt-amperes at unity power factor. Output voltage is within ± 10% at all loads up to
rated capacity. When welding, available auxiliary power will be reduced.

(2)

Height to top of exhaust elbow.

CLASSIC® 300D KUBOTA

A-2

GENERAL DESCRIPTION

The CLASSIC® 300D KUBOTA is a heavy duty, engine driven,
DC arc welding power source, capable of providing constant
current output for stick welding or DC TIG welding. This welder
is wound with all copper coils, rated at 300 amps/32 Volts, and
provides other Classic® features such as improved door latches
and stainless hinges. With the addition of the optional K623-1

Wire Feed Module™, the CLASSIC® 300D KUBOTA will pro­vide constant voltage output for running the LN-7, LN-23P, or
LN-25 wire feeders. (The Wire Feed Module is factory installed
on the K1643-10). The optional K924-4 Remote Control Kit, pro­vides a remote control rheostat for remote fine current and open
circuit voltage adjustment. See Section C for description.

The CLASSIC® 300D KUBOTA has an Electronic Engine
Protection System. In the event of sudden low oil pressure or
high coolant temperature, the engine immediately shuts down.
The CLASSIC® 300D KUBOTA has a current range of 40-350
DC amps with output ratings as follows:
These units are also capable of providing 3 kVA of 115/230
volts of 60 cycle AC auxiliary power.

RATED OUTPUT DUTY CYCLE

250A @ 30V
300A @ 32V

INSTALLATION

Auxiliary Power - 3.0 kVA of nominal 115/230V, 60Hz, AC.

Output voltage is maintained within ± 10% at all loads up to
rated capacity. (See Optional Features for Power Plug Kit.)

GFCI - Protects the 20 amp, 120V duplex receptacle. See
the Maintenance Section for detailed information on testing
and resetting of the GFCI.

120 V DUPLEX RECEPTACLE AND GFCI

A GFCI protects the 120V auxiliary power
receptacle.

A GFCI (Ground Fault Circuit Interrupter) is a device to protect
against electric shock should a piece of defective equipment
connected to it develop a ground fault. If this situation should
occur, the GFCI will trip, removing voltage from the output of
the receptacle. If a GFCI is tripped see the MAINTENANCE
section for detailed information on testing and resetting it. A
GFCI should be properly tested at least once every month.

The 120 V auxiliary power receptacle should only be used with
three wire grounded type plugs or approved double insulated
tools with two wire plugs. The current rating of any plug used
with the system must be at least equal to the current capacity of
the associated receptacle.

100%

60%

Welder Enclosure - The complete welder is rubber mounted on
a rugged steel “C” channel base.

A-2

The CLASSIC® 300D KUBOTA uses the Kubota V2403M
industrial water-cooled diesel engine.

DESIGN FEATURES

Control Panel

Both the engine and the welder controls are located on one
recessed panel at the exciter end of the machine. The welder
controls consist of a five step “Current Range Selector” switch
and a “Fine Current Adjustment” rheostat. The welder is
equipped with a “Start” button, an “Ignition” switch, an “Idler”
control switch, and a “Glow Plug” button for easier cold weather
starting.

The control panel also contains an engine temperature gauge, a
battery charging ammeter, an oil pressure gauge, for auxiliary
power consists of one 20 amp, 120VAC (5-20R) duplex recep­tacle with GFCI protection and one 15 amp, 250VAC (6-15R)
receptacle,

All Copper Windings - For long life and dependable operation.

Engine Idler - The Classic® 300D is equipped with an elec-

tronic automatic engine idler. It automatically increases and
decreases engine speed when starting and stopping welding
or using auxiliary power. A built-in time delay permits chang­ing electrodes before the engine slows to its low idle speed.
The “Idler” control switch on the panel locks the idler in high idle
position when desired.

protected by 2 pole, 15 Amp breaker.

The output terminals are placed at the side of the machines so
that they are protected by the door. The output terminals are
labeled (+) and (-).

Cranking System - A 12 volt electric starter is standard.

Air Cleaner - Heavy duty two stage dry type.

Muffler - A muffler and stainless steel exhaust outlet elbow are

standard.

Engine Hour Meter - A meter to record hours of operation.

Engine Protection - The system shuts the engine down in the

event of sudden low oil pressure or high coolant temperature. A
warning light on the control panel will indicate such a fault. To
reset the engine for restarting, turn the ignition switch off then
on. Refer to Troubleshooting section for all warning light fault
codes.

High Idle RPM (OCV) Adjustment - A Potentiometer is mount­ed on the Control Panel that allows the operator to adjust the
high idle engine speed between 1650 and 1800 RPMʼS. This is
to allow further adjustment of the OCV. Total OCV adjustment
range is about 15 volts.

Oil Drain Valve - A ball valve, hose and clamp are standard.

Remote Control - The Remote/Local switch and Receptacle

are standard.

CLASSIC® 300D KUBOTA

A-3

INSTALLATION

PRE-OPERATION INSTALLATION

A-3

CAUTION

WARNING

Do not attempt to use this equipment until you have
thoroughly read the engine manufacturerʼs manual sup­plied with your welder. It includes important safety pre­cautions, detailed engine starting, operating and main­tenance instructions, and parts lists.

------------------------------------------------------------------------

ELECTRIC SHOCK can kill.

• Do not touch electrically live parts or
electrode with skin or wet clothing.

• Insulate yourself from work and ground

• Always wear dry insulating gloves.

--------------------------------------------------------------------------------

ENGINE EXHAUST can kill.

• Use in open, well ventilated areas or vent
exhaust outside.

--------------------------------------------------------------------------------

MOVING PARTS can injure.

• Do not operate with doors open or guards
off.

• Stop engine before servicing.

• Keep away from moving parts.

--------------------------------------------------------------------------------

See additional warning information at the front

of this operatorʼs manual.

--------------------------------------------------------

EXHAUST SPARK ARRESTER

Some federal, state or local laws may require that engines
be equipped with exhaust spark arresters when they are
operated in certain locations where unarrested sparks may
present a fire hazard. The standard muffler included with
this welder does not qualify as a spark arrester. When
required by local regulations, a suitable spark arrester must
be installed and properly maintained.

---------

DO NOT MOUNT OVER COMBUSTIBLE SURFACES.
Where there is a combustible surface directly under sta­tionary or fixed electrical equipment, the surface shall
be covered with a steel plate at least .06”(1.6mm) thick,
which shall extend not more than 5.90”(150mm) beyond
the equipment on all side.

-------------------------------------------------------------------------------

If the engine is to be operated at an angle, provisions must be
made for checking and maintaining the oil level at the normal
(FULL) oil capacity in the crankcase.

When operating the welder at an angle, the effective fuel
capacity will be slightly less than the amount specified.

MACHINE GROUNDING

According to the United States National Electrical Code, the
frame of this portable generator is not required to be grounded
and is permitted to serve as the grounding means for cord
connected equipment plugged into its receptacle.

Some state, local, or other codes or unusual operating circum­stances may require the machine frame to be grounded. It is
recommended that you determine the extent to which such
requirements may apply to your particular situation and follow
them explicitly. A machine grounding stud marked with the
symbol is provided on the welding generator frame foot. In
general, if the machine is to be grounded, it should be con­nected with a #8 or larger copper wire to a solid earth ground
such as a metal water pipe going into the ground for at least
ten feet and having no insulated joints, or to the metal frame­work of a building which has been effectively grounded. The
U.S. National Code lists a number of alternate means of
grounding electrical equipment.

CAUTION

Use of an incorrect arrester may lead to engine damage or
performance loss. Contact the engine manufacturer for spe­cific recommendations.

--------------------------------------------------------------------------------

LIFT BAIL

A lift bail is provided for lifting with a hoist.

LOCATION/VENTILATION

Always operate the welder with the doors closed. Leaving the
doors open changes the designed air flow and may cause
overheating.

The welder should be located to provide an unrestricted flow
of clean, cool air. Also, locate the welder so that engine
exhaust fumes are properly vented to an outside area.

ANGLE OF OPERATION

Engines are designed to run in the level condition which is
where the optimum performance is achieved. The maximum
angle of continuous operation is 20 degrees in all directions,
30 degrees Intermittent (less than 10 minutes continuous) in
all directions.

CLASSIC® 300D KUBOTA

EQUIPMENT can damaged.

-------------------------------------------------------------------------------

WARNING

• Lift only with equipment of
adequate lifting capacity.

• Be sure machine is stable
when lifting.

• Do not lift this machine using
lift bale if it is equipped with a
heavy accessory such as trail­er or gas cylinder.

FALLING • Do not lift machine if lift bale is

cause injury. • Do not operate machine while

suspended from lift bale.

A-4

INSTALLATION

A-4

TRAILER (See Optional Features)

If the user adapts a non-Lincoln trailer, the user must
assume responsibility that the method of attachment
and usage does not result in a safety hazard nor dam­age the welding equipment. Some of the factors to be
considered are as follows:

1. Design capacity of trailer vs. weight of Lincoln
equipment and likely additional attachments.

2. Proper support of, and attachment to, the base of
the welding equipment so there will be no undue
stress to the framework.

3. Proper placement of the equipment on the trailer to
ensure stability side to side and front to back when
being moved and when standing by itself while
being operated or serviced.

4. Typical conditions of use, i.e., travel speed, rough­ness of surface on which the trailer will be operat­ed; environmental conditions, likely maintenance.

5. Conformance with federal, state and local laws.

(1)

Consult your federal, state and local laws regarding specific

requirements for use on public highways.

(1)

VEHICLE MOUNTING

WARNING

Improperly mounted concentrated loads may
cause unstable vehicle handling and tires or other
components to fail.

• Only transport this Equipment on serviceable
vehicles which are rated and designed for such
loads.

• Distribute, balance and secure loads so vehicle
is stable under conditions of use.

• Do not exceed maximum rated loads for compo­nents such as suspension, axles and tires.

• Mount equipment base to metal bed or frame of
vehicle.

• Follow vehicle manufactureʼs instructions.

-------------------------------------------------------------------------------

POLARITY CONTROL AND CABLE SIZES

With the engine off, route the electrode and work
cables through the strain relief bracket on the base
and connect to the studs located below the fuel tank
mounting rail. (See size recommendations below.)
For positive polarity, connect the electrode cable to
the terminal marked “+”. For Negative polarity, con­nect the electrode cable to the “-” stud. These con­nections should be checked periodically and tightened
if necessary.

When welding at a considerable distance from the
welder, be sure you use ample sized welding cables.

RECOMMENDED COPPER CABLE SIZES

Amps Duty Cycle Up to 200ft.(61m) 200 to 250ft.

250 100% 1 1/0

300 60% 1/0 2/0

Cables Sizes for Combined Length
of Electrode Plus Work Cable

(61 to 76m)

CAUTION

PRE-OPERATION SERVICE

READ the engine operating and maintenance instruc-

tions supplied with this machine.

------------------------------------------------------------------------

WARNING

• Stop engine while fueling.

• Do not smoke when fueling.

• Keep sparks and flame away from
tank.

• Do not leave unattended while
fueling.

• Wipe up spilled fuel and allow

DIESEL FUEL

can

cause fire

DIESEL FUEL ONLY-Low sulphur fuel or ultra low
sulphur fuel in U.S.A. and Canada.

-------------------------------------------------------------------------

OIL

This unit is supplied from the factory with the engine
crankcase filled with a high quality SAE 10W/30 oil.
This oil should be acceptable for most typical ambient
temperatures. Consult the engine operation manual
for specific engine manufacturerʼs recommendations.
Upon receipt of the welder, check the engine dipstick
to be sure the oil is at the “full” mark. DO NOT overfill.

FUEL

Fill the fuel tank with the grade of fuel recommended
in the Engine Operatorʼs manual. Make sure the valve
on the water separator is in the open position.

COOLING SYSTEM

The radiator has been filled at the factory with a 50-50
mixture of ethylene glycol antifreeze and water.
Check the radiator level and add a 50-50 solution as
needed (see engine manual or antifreeze container for
alternate antifreeze recommendations).

fumes to clear before starting
engine.

• Do not overfill tank, fuel expan­sion may cause overflow.

CLASSIC® 300D KUBOTA