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Operating Instructions
36
Hourmeter
The hourmeter displays operating time accumu-
lated while the ignition switch is in the ON position.
Voltmeter
The voltmeter displays battery and charging system
voltage. An indication of low or high voltage (the red
area) indicates an electrical system failure. The
cause of the failure should be determined and cor-
rected.
Oil Pressure Warning Light
The oil pressure warning light indicates that engine
oil pressure is below the safe operating level [below
3 to 5 PSI (21 to 34 kPa)]. This light (and warning
horn) will come on when the ignition is turned ON, but
should go off after the engine is started. If the light
fails to come on when the ignition switch is turned ON,
it could indicate a burned out bulb. If the light comes
on during engine operation, stop the engine imme-
diately and correct the source of the problem before
further engine operation.
IMPORTANT: Continued operation of the engine
with an illuminated oil pressure warning light MAY
cause severe engine damage (if a low oil pressure
condition exists).
Over Temperature Warning Light
(Model MT and MTEFI Only)
The over temperature warning light indicates that
engine oil temperature and/or cylinder head temper-
ature are above the safe operating limit and the en-
gine is overheating [above 305° F (152° C) oil or
450° F (232° C) cylinder head]. If this light comes
on, there may be a problem with:
• Engine cooling system (material packed into cyl-
inder head cooling fins, clogged air intake screen)
• Low oil level in crankcase
Stop the engine and correct the source of the prob-
lem before further operation.
IMPORTANT: Continued operation of the engine
with an illuminated over temperature warning light
MAY cause severe engine damage (if a high oil tem-
perature or head temperature condition exists).
Water Temperature Warning Light (Model MTL)
The water temperature warning light indicates that
engine coolant temperature is above the safe oper-
ating limit and the engine is overheating. If this
light comes on, there may be a problem with:
• Radiator cooling air flow (material packed into radi-
ator cooling fins, clogged air intake screen)
• Cooling fan not operating
• Low coolant quantity in cooling system
Water Temperature Gauge (Model MTL)
The water temperature gauge monitors engine
cooling system temperature. If engine coolant
temperature exceeds 230° F (110° C), an overheat
condition exists; the water temperature light will
come on and the warning horn will sound.
Engine Service Light - Model MTEFI
The engine service light indicates the Engine Con-
trol Unit (ECU) has detected a fault in the engine
performance. When this light illuminates during op-
eration, contact an authorized Kohler Service dealer
to diagnose the fault.
IMPORTANT: Continued operation of the engine
with an illuminated engine service light will result in
sub-standard performance and MAY cause engine
damage if not corrected as soon as possible.
WARNING
If engine cooling system overheating is
indicated, continued operation of the en-
gine, even for a short time, COULD result
in fire, risk of personal injury, and severe
damage to equipment.