Exmark Lawn Tractor - Manual (Page 46)

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ENGINE TROUBLESHOOTING TABLE
PROBLEM
NO
FUEL
IMPROPER
FUEL
DIRT IN
FUEL LINE
DIRTY AIR
FILTER
FAULTY
SPARK
PLUG
ENGINE
OVERLOADED
BLOCKED
FUEL
FILTER
INCORRECT
OIL
LEVEL
DIRTY
AIR
SCREEN
INSUFFICIENT
BATTERY
CHARGE
Will not start X X X X X X X
Hard starting X X X X X X X
Stops suddenly X X X X X X X
Lacks power X X X X X X X X
Operates erratically X X X X X X X
Knocks or pings X X X
Skips or misfires X X X X X
Backfires X X X X X
Overheats * X X X X X
High fuel
consumption
X X X X
6.4 ENGINE WARNING SYSTEMS
For Kohler EFI Units Only:
6.4.1 Electronic Control Unit Malfunction Indicator
The electronic control unit (ECU) continuously monitors operation of the EFI
system. If a problem or fault within the system is detected, the malfunction
indicator light (MIL) is illuminated. The MIL is the red light located on the control
console between the key switch and the throttle controls. Follow the
troubleshooting steps outlined in the Kohler engine operator’s manual if the MIL is
illuminated.