Troubleshooting Chart; Engine And Controls Troubles - Hobart JET-EX 4 Operation And Maintenance Manual

OM-2049
TROUBLESYMPTOM
AND CONDITION
ENGINE AND CONTROLS
1. Engine will not
start. Starter
will not crank
engine.
3-1
Page 6
PROBABLE CAUSE
A. Ignition switch (S404)
or pushbutton start
switch (S401)
defective.
B. Batteries discharged,
or loose battery or
ground connection.
C. Defective starter
relay (L401)
D. Defective starter.
(B401)
Troubleshooting Chart (Sheet 1 of 16)
Figure 4
TEST, CHECK, AND/OR
REMEDY
A. Momentarily connect large
capacity jumper cable between
the hot side of the starter
relay (L401) and the start
switch terminal on the starter
relay (blue wire). If the
starter operates, check
ignition switch (19, Fig. 2)
and pushbutton start switch
(17, Fig. 2). Replace faulty
switch. If starter doesn't
crank, proceed to Step B.
B. Check battery connections
and check voltage across
battery. Voltage should be
approximately 13.5 VDC. Be
sure this voltage is reaching
starter relay input terminal.
If battery and connections are
good, proceed to Step C.
C. Momentarily connect a large
capacity jumper cable between
the hot side of the starter
relay (8, Fig. 1) and the
starter input terminal.
If the starter attempts to
crank the engine, the starter
solenoid is defective.
Replace it. If engine still
won't crank, proceed to Step D.
D. If starter did not attempt
to operate in Step C above,
the starter is defective.
Replace starter. If starter
did attempt to operate, but
couldn't turn engine, proceed
to Step E.
May 20/89