Hobart Brothers 6910, Operation And Maintenance Manual With Illustrated Parts List

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Trouble Shooting Chart (Sheet 4 of 20)
Figure 5
TROUBLE, SYMPTOM TEST, CHECK, AND/OR
AND CONDITION PROBABLE CAUSE REMEDY
ENGINE AND CONTROLS (CONTINUED)
5. Engine starts.Stops A. The shut-down circuit A. Restart the engine, hold
after a few seconds may have functioned permissive start switch in
by automatic shut- normally to stop the START position, and observe
down. engine because of low oil pressure gage. If oil
lubricating oil pres- pressure is 12 psi or more,
sure. and the engine shuts down
when the permissive start
switch is released to the
run position, put a jumper
wire across oil pressure
switch terminals “C” and
“NO”. Restart engine. If
the engine continues to run
when the permissive start
switch is released to the
RUN position, the oil
pressure switch is
defective. Replace oil
pressure switch
B. Defective or incor- B. Check wiring to high temper-
rectly wired high ature switch. One Red-Yellow
temperature switch wire should be connected to
(S 49, located on the the C terminal. With wires
engine block on the removed, check resistance
right side). between terminals C and N.C.
A resistance reading of zero
indicates a good temperature
switch. A readable resis-
tance, indicates a defective
switch. Replace switch if
defective.
6. Engine runs at idle A. Lamp defective A. Replace lamp.
speed. Engine “ON”
indicating light
B. Indicating light body B. Be sure light is grounded
(27 Fig. 1) does poorly grounded properly.
not glow.
OM-2028
3-1 June 20/89 Revised
Page 12