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TROUBLESHOOTING & REPAIR
F-11 F-11
SA-250
TROUBLESHOOTING GUIDE Observe Safety Guidelines
detailed in the beginning of this manual.
CAUTION
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.
1. Check for adequate fuel supply.
2. Press the engine protection
“Reset” button.
3. Check the fuse in the engine
protection relay.
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 injection pump.
Make sure it is operating when
12VDC is applied to leads
#59C(+) to #60(-).
3. The engine protection relay may
be faulty. Replace.
4. The engine fuel injectors may
need service.
The engine starts but shuts down
after a short period of time.
1. Check for adequate fuel supply.
2. Check engine oil level.
3. Air may be entrapped in fuel
system. Refer to
Maintenance
section to bleed fuel system.
1. The oil pressure switch or
coolant temperature sensor
may be causing the engine pro-
tection relay to shut off the fuel
injection pump. Make sure oil
pressure and coolant tempera-
ture are correct before replacing
sensors.
2. The protection relay may be
faulty.
3. The engine fuel injectors may
need service.