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TP-5695 12/93 Troubleshooting 4-1
Section 4. Troubleshooting
When troubles occur, do not overlook simple causes. A
starting problem, for example, could be caused by
improper fuel or an empty fuel tank. The following charts
list some common problems. If procedures in this
manual do not explain how to correct the problem, take
the generator set to an authorized service
dealer/distributor. Tell the dealer exactly what happened
when the problem occurred and of any adjustments
made to the set.
Engine
Problem Possible Cause Corrective Action
Unit will not crank
Weak or dead battery Recharge or replace battery
U
n
i
t
w
i
l
l
n
o
t
c
r
a
n
k
Reversed or poor battery connections.
Poor ground.
Check connections
Fuse blown in controller Replace fuse
Defective start/stop switch Check function, replace as necessary.
Defective starter solenoid Check starter solenoid and wiring. Replace
as necessary.
Defective starter Attempt starting by direct connection to
battery. Replace/repair as necessary.
Unit cranks but will
n
o
t
s
t
a
r
t
Out of fuel Replenish
U
n
i
t
c
r
a
n
k
s
b
u
t
w
i
l
l
not start
Clogged fuel screen Clean fuel screen
n
o
t
s
t
a
r
t
Faulty antidieseling solenoid Replace solenoid
Air intake clogged Clean or replace
Faulty spark plug(s) Replace (and regap) spark plug(s)
Loose spark plug connection Reconnect wires
Faulty ground (--) connection Clean and retighten
Carburetor adjustment wrong Adjust carburetor
Defective electric fuel pump Check pressure. Replace as necessary.
Shorted or open ignition coil Replace coil
Weak or dead battery Recharge or replace
Bad fuel mixture Replace fuel; clean carburetor
Flooded carburetor Wait a few minutes and attempt restart
Engine malfunction See authorized Kohler service
dealer/distributor
Engine starts, but
d
o
e
s
n
o
t
c
o
n
t
i
n
u
e
t
o
No generator output voltage Check AC voltage
E
n
g
i
n
e
s
t
a
r
t
s
,
b
u
t
does not continue to
r
u
n
a
f
t
e
r
s
t
a
r
t
s
w
i
t
c
h
No/low oil pressure Check oil pressure and pump
d
o
e
s
n
o
t
c
o
n
t
i
n
u
e
t
o
run after start switch
is released
Defective low oil pressure (LOP) safety
shutdown switch
Check LOP shutdown switch
High temperature shutdown Check cooling system
Defective high exhaust temp. (HET) and/or
high water temp. (HWT) safety shutdown
switch(es)
Check HET and/or HWT shutdown
switch(es)
Hard starting
Stale or bad fuel Replace fuel
H
a
r
d
s
t
a
r
t
i
n
g
Fuel vapor lock Check fuel line routing
Faulty spark plug(s) Replace (and regap) plug(s)
Weak ignition coil Replace
Carburetor adjustment wrong Adjust carburetor
Air intake clogged Clean