Lincoln Electric Fleet 650 Service Manual page 20

LINCOLN ELECTRIC
Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
The engine cranks when the
start button is pressed but will
not start.
The engine will not develop full
power.
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the
Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
POSSIBLE AREAS OF
MISADJUSTMENT(S)
ENGINE PROBLEMS
1. The battery voltage may be
low (normally results in slow
cranking speed). The battery
should be checked and
recharged if it is not producing
adequate voltage and replaced
if it will not accept a full charge.
2. Check that the machine has
an adequate supply of fresh,
clean fuel.
1. The fuel may be old or
contaminated. Supply the
engine with clean fresh fuel.
2. The fuel filter may be
clogged, replace if necessary.
3. The air filter may be clogged,
replace if necessary.
Fleet™ 650 Service Manual
TROUBLESHOOTING GUIDE
RECOMMENDED
COURSE OF ACTION
1. The fuel filter may be
clogged, replace if necessary.
2. Fuel pump may be faulty.
Check for fuel flow through
filters. Contact local authorized
engine service shop.
3. Check oil level.
4. If the 'RUN/STOP' switch is
in the 'RUN' position for more
than 60 seconds before
starting. The 'RUN/STOP'
switch will need to be switched
off and turned back on again.
5. Perform the Engine
Shutdown Relay Test
Procedure.
6. The timer delay relay may be
faulty. See Wiring Diagram.
7. The fuel shutdown solenoid
relay may be faulty. See Wiring
Diagram.
1. The engine may be in need
of adjustment or repair.
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