Operator’s Manual

LT-7 Lightweight Tractor

For use with machines having Code Numbers:
K227, K395 and K395-1

Register your machine:

www.lincolnelectric.com/register
Authorized Service and Distributor Locator:
www.lincolnelectric.com/locator

Save for future reference

Date Purchased

Code: (ex: 10859)

Serial: (ex: U1060512345)

IM279-C | Issue Date Sept-13

© Lincoln Global, Inc. All Rights Reserved.
 THANK YOU FOR SELECTING
A QUALITY PRODUCT BY KEEP YOUR HEAD OUT OF THE FUMES.
LINCOLN ELECTRIC. DON’T get too close to the arc.
Use corrective lenses if necessary
to stay a reasonable distance
away from the arc.
READ and obey the Safety Data
PLEASE EXAMINE CARTON AND EQUIPMENT FOR Sheet (SDS) and the warning label
DAMAGE IMMEDIATELY that appears on all containers of
When this equipment is shipped, title passes to the purchaser welding materials.
upon receipt by the carrier. Consequently, claims for material USE ENOUGH VENTILATION or
damaged in shipment must be made by the purchaser against the exhaust at the arc, or both, to
transportation company at the time the shipment is received. keep the fumes and gases from
your breathing zone and the general area.
IN A LARGE ROOM OR OUTDOORS, natural ventilation may be
adequate if you keep your head out of the fumes (See below).
SAFETY DEPENDS ON YOU
USE NATURAL DRAFTS or fans to keep the fumes away
Lincoln arc welding and cutting equipment is designed and built
from your face.
with safety in mind. However, your overall safety can be increased
by proper installation ... and thoughtful operation on your part. If you develop unusual symptoms, see your supervisor.
DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIPMENT Perhaps the welding atmosphere and ventilation system
WITHOUT READING THIS MANUAL AND THE SAFETY should be checked.
PRECAUTIONS CONTAINED THROUGHOUT. And, most importantly,
think before you act and be careful.
WEAR CORRECT EYE, EAR &
BODY PROTECTION
PROTECT your eyes and face with welding helmet
WARNING properly fitted and with proper grade of filter plate
(See ANSI Z49.1).
This statement appears where the information must be followed
exactly to avoid serious personal injury or loss of life. PROTECT your body from welding spatter and arc
flash with protective clothing including woolen
clothing, flame-proof apron and gloves, leather
CAUTION leggings, and high boots.
PROTECT others from splatter, flash, and glare
This statement appears where the information must be followed with protective screens or barriers.
to avoid minor personal injury or damage to this equipment.
IN SOME AREAS, protection from noise may be appropriate.
BE SURE protective equipment is in good condition.
Also, wear safety glasses in work area
AT ALL TIMES.

SPECIAL SITUATIONS
DO NOT WELD OR CUT containers or materials which previously
had been in contact with hazardous substances unless they are
properly cleaned. This is extremely dangerous.
DO NOT WELD OR CUT painted or plated parts unless special
precautions with ventilation have been taken. They can release
highly toxic fumes or gases.
Additional precautionary measures
PROTECT compressed gas cylinders from excessive heat,
mechanical shocks, and arcs; fasten cylinders so they cannot fall.
BE SURE cylinders are never grounded or part of an
electrical circuit.
REMOVE all potential fire hazards from welding area.
ALWAYS HAVE FIRE FIGHTING EQUIPMENT READY FOR
IMMEDIATE USE AND KNOW HOW TO USE IT.
Safety 01 of 04 - 06/15/2016
 SAFETY

SECTION A: 1.d. Keep all equipment safety guards, covers

and devices in position and in good repair.
Keep hands, hair, clothing and tools away
WARNINGS from V-belts, gears, fans and all other
moving parts when starting, operating or
repairing equipment.
CALIFORNIA PROPOSITION 65 WARNINGS
Diesel Engines 1.e. In some cases it may be necessary to remove safety guards to
perform required maintenance. Remove guards only when
Diesel engine exhaust and some of its constituents are known necessary and replace them when the maintenance requiring
to the State of California to cause cancer, birth defects, and other their removal is complete. Always use the greatest care when
reproductive harm. working near moving parts.
Gasoline Engines 1.f. Do not put your hands near the engine fan. Do not attempt to
The engine exhaust from this product contains chemicals known override the governor or idler by pushing on the throttle control
to the State of California to cause cancer, birth defects, or other rods while the engine is running.
reproductive harm.
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
ARC WELDING CAN BE HAZARDOUS. PROTECT as appropriate.
YOURSELF AND OTHERS FROM POSSIBLE SERIOUS
1.h. To avoid scalding, do not remove the radiator
INJURY OR DEATH. KEEP CHILDREN AWAY. pressure cap when the engine is hot.
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, ELECTRIC AND
P.O. Box 351040, Miami, Florida 33135 or CSA Standard
W117.2-1974. A Free copy of “Arc Welding Safety” booklet MAGNETIC FIELDS MAY
E205 is available from the Lincoln Electric Company, BE DANGEROUS
22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.
BE SURE THAT ALL INSTALLATION, OPERATION, 2.a. Electric current flowing through any conductor
MAINTENANCE AND REPAIR PROCEDURES ARE causes localized Electric and Magnetic Fields (EMF).
PERFORMED ONLY BY QUALIFIED INDIVIDUALS. 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.
FOR ENGINE POWERED 2.c. Exposure to EMF fields in welding may have other health effects
EQUIPMENT. which are now not known.

1.a. Turn the engine off before troubleshooting 2.d. All welders should use the following procedures in order to
and maintenance work unless the minimize exposure to EMF fields from the welding circuit:
maintenance work requires it to be running. 2.d.1. Route the electrode and work cables together - Secure
them with tape when possible.
1.b. Operate engines in open, well-ventilated
2.d.2. Never coil the electrode lead around your body.
areas or vent the engine exhaust fumes outdoors.
2.d.3. Do not place your body between the electrode and work
1.c. Do not add the fuel near an open flame cables. If the electrode cable is on your right side, the
welding arc or when the engine is running. work cable should also be on your right side.
Stop the engine and allow it to cool before 2.d.4. Connect the work cable to the workpiece as close as pos-
refueling to prevent spilled fuel from sible to the area being welded.
vaporizing on contact with hot engine parts
2.d.5. Do not work next to welding power source.
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.

Safety 02 of 04 - 06/15/2016
 SAFETY

ELECTRIC SHOCK ARC RAYS CAN BURN.

CAN KILL.
3.a. The electrode and work (or ground) circuits are 4.a. Use a shield with the proper filter and cover plates to protect your
electrically “hot” when the welder is on. Do eyes from sparks and the rays of the arc when welding or
not touch these “hot” parts with your bare skin or wet clothing. observing open arc welding. Headshield and filter lens should
Wear dry, hole-free gloves to insulate hands. conform to ANSI Z87. I standards.

3.b. Insulate yourself from work and ground using dry insulation. 4.b. Use suitable clothing made from durable flame-resistant material
Make certain the insulation is large enough to cover your full area to protect your skin and that of your helpers from the arc rays.
of physical contact with work and ground.
4.c. Protect other nearby personnel with suitable, non-flammable
In addition to the normal safety precautions, if screening and/or warn them not to watch the arc nor expose
welding must be performed under electrically themselves to the arc rays or to hot spatter or metal.
hazardous conditions (in damp locations or while
wearing wet clothing; on metal structures such as
floors, gratings or scaffolds; when in cramped FUMES AND GASES
positions such as sitting, kneeling or lying, if there
is a high risk of unavoidable or accidental contact
CAN BE DANGEROUS.
with the workpiece or ground) use the following
5.a. Welding may produce fumes and gases
equipment:
hazardous to health. Avoid breathing these fumes and gases.
• Semiautomatic DC Constant Voltage (Wire) Welder. When welding, keep your head out of the fume. Use enough
• DC Manual (Stick) Welder. ventilation and/or exhaust at the arc to keep fumes and gases
• AC Welder with Reduced Voltage Control. away from the breathing zone. When welding hardfacing
(see instructions on container or SDS) or on lead
3.c. In semiautomatic or automatic wire welding, the electrode,
or cadmium plated steel and other metals or
electrode reel, welding head, nozzle or semiautomatic welding
coatings which produce highly toxic fumes, keep
gun are also electrically “hot”.
exposure as low as possible and within applicable
3.d. Always be sure the work cable makes a good electrical OSHA PEL and ACGIH TLV limits using local
connection with the metal being welded. The connection should exhaust or mechanical ventilation unless exposure
be as close as possible to the area being welded. assessments indicate otherwise. In confined
spaces or in some circumstances, outdoors, a
3.e. Ground the work or metal to be welded to a good electrical (earth) respirator may also be required. Additional
ground. precautions are also required when welding
on galvanized steel.
3.f. Maintain the electrode holder, work clamp, welding cable and
welding machine in good, safe operating condition. Replace 5. b. The operation of welding fume control equipment is affected by
damaged insulation. various factors including proper use and positioning of the
equipment, maintenance of the equipment and the specific
3.g. Never dip the electrode in water for cooling. welding procedure and application involved. Worker exposure
level should be checked upon installation and periodically
3.h. Never simultaneously touch electrically “hot” parts of electrode thereafter to be certain it is within applicable OSHA PEL and
holders connected to two welders because voltage between the ACGIH TLV limits.
two can be the total of the open circuit voltage of both
welders. 5.c. Do not weld in locations near chlorinated hydrocarbon vapors
coming from degreasing, cleaning or spraying operations. The
3.i. When working above floor level, use a safety belt to protect heat and rays of the arc can react with solvent vapors to form
yourself from a fall should you get a shock. phosgene, a highly toxic gas, and other irritating products.

3.j. Also see Items 6.c. and 8. 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.
5.e. Read and understand the manufacturer’s instructions for this
equipment and the consumables to be used, including the
Safety Data Sheet (SDS) and follow your employer’s safety
practices. SDS forms are available from your welding
distributor or from the manufacturer.
5.f. Also see item 1.b.

Safety 03 of 04 - 06/15/2016
 SAFETY

WELDING AND CUTTING CYLINDER MAY EXPLODE IF

SPARKS CAN CAUSE DAMAGED.
FIRE OR EXPLOSION. 7.a. Use only compressed gas cylinders containing
6.a. Remove fire hazards from the welding area. If the correct shielding gas for the process used
this is not possible, cover them to prevent the welding sparks and properly operating regulators designed for
from starting a fire. Remember that welding sparks and hot the gas and pressure used. All hoses, fittings,
materials from welding can easily go through small cracks and etc. should be suitable for the application and
openings to adjacent areas. Avoid welding near hydraulic lines. maintained in good condition.
Have a fire extinguisher readily available. 7.b. Always keep cylinders in an upright position securely chained to
6.b. Where compressed gases are to be used at the job site, special an undercarriage or fixed support.
precautions should be used to prevent hazardous situations. 7.c. Cylinders should be located:
Refer to “Safety in Welding and Cutting” (ANSI Standard Z49.1)
and the operating information for the equipment being used. • Away from areas where they may be struck or subjected
to physical damage.
6.c. When not welding, make certain no part of the electrode circuit is • A safe distance from arc welding or cutting operations
touching the work or ground. Accidental contact can cause and any other source of heat, sparks, or flame.
overheating and create a fire hazard.
7.d. Never allow the electrode, electrode holder or any other
6.d. Do not heat, cut or weld tanks, drums or containers until the electrically “hot” parts to touch a cylinder.
proper steps have been taken to insure that such procedures
will not cause flammable or toxic vapors from substances inside. 7.e. Keep your head and face away from the cylinder valve outlet
They can cause an explosion even though they have been when opening the cylinder valve.
“cleaned”. For information, purchase “Recommended Safe
Practices for the Preparation for Welding and Cutting of 7.f. Valve protection caps should always be in place and hand tight
Containers and Piping That Have Held Hazardous Substances”, except when the cylinder is in use or connected for use.
AWS F4.1 from the American Welding Society
7.g. Read and follow the instructions on compressed gas cylinders,
(see address above).
associated equipment, and CGA publication P-l, “Precautions for
6.e. Vent hollow castings or containers before heating, cutting or Safe Handling of Compressed Gases in Cylinders,” available from
welding. They may explode. the Compressed Gas Association, 14501 George Carter Way
Chantilly, VA 20151.
6.f. Sparks and spatter are thrown from the welding arc. Wear oil 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.
FOR ELECTRICALLY
6.g. Connect the work cable to the work as close to the welding area POWERED EQUIPMENT.
as practical. Work cables connected to the building framework or
other locations away from the welding area increase the 8.a. Turn off input power using the disconnect
possibility of the welding current passing through lifting chains, switch at the fuse box before working on
crane cables or other alternate circuits. This can create fire the equipment.
hazards or overheat lifting chains or cables until they fail.
8.b. Install equipment in accordance with the U.S. National Electrical
6.h. Also see item 1.c. Code, all local codes and the manufacturer’s recommendations.

6.I. Read and follow NFPA 51B “Standard for Fire Prevention During 8.c. Ground the equipment in accordance with the U.S. National
Welding, Cutting and Other Hot Work”, available from NFPA, 1 Electrical Code and the manufacturer’s recommendations.
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.

Safety 04 of 04 - 06/15/2016
LT-7 Lightweight Tractor NOTES
Connection of LT-7 to CV-655, DC-600, DC655 and Flextec 650
LT-7 Lightweight Tractor NOTES
LT-7 Lightweight Tractor NOTES
Customer assistanCe PoliCy
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
customer’s 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.