If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
216-383-2531 or 1-800-833-9353.

PROBLEMS
(SYMPTOMS)

POSSIBLE AREAS OF
MISADJUSTMENT(S)

RECOMMENDED
COURSE OF ACTION

ENGINE PROBLEMS

The engine “cranks” but will not
start (Classic III gasoline models
only).

1. Check for adequate fuel supply.

2. Make sure the ignition switch is

in the “ON” position.

1. Check the ignition switch for

proper operation.

Check the

associated leads for loose or
faulty connections.

See the

Wiring Diagram.

2. Check the fuel shut-off solenoid.

Make sure it is opening when
12VDC is applied to it. See the
Wiring Diagram.

3. The engine ignition system or

engine may be in need of ser-
vice.

The engine “cranks” but will not
start (Classic IIID diesel models
only).

1. Check for adequate fuel supply.

2. Make sure the ignition switch is

in the “ON” position.

3. Press the glow plug button for

10 to 20 seconds.

4. Maker sure the engine protec-

tion “Reset” button is pressed.

5. Check the fuse in the engine

protection relay. See the Wiring
Diagram.

6. If the fuel supply is cut off or

runs out while the fuel pump is
operating, air may be entrapped
in the fuel distribution system. If
this happens, bleeding of the
fuel system may be necessary.
See the Engine Operating
Manual.

1. Check the ignition switch for

proper operation.

Check the

associated leads for loose or
faulty connections.

See the

Wiring Diagram.

2. Check the pump solenoid and

fuel lift pump. Make sure they
are operating when 12VDC is
applied to them. See the Wiring
Diagram.

3. The engine protection relay may

be faulty. Replace.

4. The engine fuel injectors may

need service.

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