Hobart JET-EX 4 Operation And Maintenance Manual page 71

TROUBLESYMPTOM
AND CONDITION
ENGINE AND CONTROLS
4. Engine starts
then stops.
May 20/89
PROBABLE CAUSE
A. Fuel not turned on.
B. Defective oil pressure
switch (S403) located
on engine block.
C. Fuel valve solenoid
(L404) defective.
D. Excessive engine speed.
(1) Loose or defective
governor drive
belt.
(2) Improperly
adjusted governor.
TEST, CHECK, AND/OR
REMEDY
A. Turn on fuel shutoff valve.
B. Connect a jumper wire across
the "C" and "No" terminals
of oil pressure switch. Start
engine and check oil pressure.
If it is below 10 PSI (69 kPa)
shut down the engine and check
lubrication system for leaks.
Check also the oil pump. If
oil pressure comes up to
normal, and the engine
continues to run, the oil
pressure switch is defective.
Replace oil pressure switch.
If oil pressure switch is
good, proceed to Step C.
C. Refer to 2.F. above and check
accordingly.
D. Check and correct as follows:
(1) Check condition of
governor belt. If
excessively worn, replace
it. If its condition is
good, tighten it in
accordance with Ford
Maintenance and Operators
Manual in Chapter 5.
(2) Adjust governor. Refer
to Section 2-3, Para. 3,
and Ford Maintenance
and Operator's Manual
in Chapter 5.
OM-2049
3-1
Page 9