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Spark Plugs
(Kohler 750 EFI only)
Inspection
Spark plug condition is indicative of engine operation. The
spark plug firing end condition should be read after the
engine is warmed up and the vehicle is driven at higher
speeds. Immediately check the spark plug for color.
WARNING:
A HOT EXHAUST SYSTEM AND ENGINE
CAN CAUSE BURNS
1.
Remove the seat. Remove the spark plug cap.
2.
Remove the plug by rotating it counterclockwise.
3.
Reverse the procedure for spark plug installation.
4.
Torque to specification.
Normal Plug
The normal insulator tip is gray, tan or light
brown. There will be few combustion deposits.
The electrodes are not burned or eroded. This
indicates the proper type and heat range for the
engine and service. The tip should not be white. A
white insulator tip indicates overheating, caused
by use of an improper spark plug or incorrect
throttle body adjustments.
Wet Fouled Plug
The wet fouled insulator tip is black. A damp
oil film covers the firing end. There may be a
carbon layer over the entire nose. Generally, the
electrodes are not worn. General causes of fouling
are excessive oil, use of non-recommended oil or
incorrect throttle body adjustments.
COOLING SYSTEM
Kohler 750 EFI
NOTICE:
•
Do not travel through water deeper than 12
inches, or to the wheel’s center cap. Water
can get into the engine and damage the
engine and/or electrical components.
•
Driving through tall grass or leaves can
