Exmark Navigator NAV20KC Operator's Manual page 43

NO
PROBLEM
FUEL
X
Will not start
X
Hard starting
X
Stops suddenly
Lacks power
Operates erratically
Knocks or pings
Skips or misfires
Backfires
Overheats
High fuel
consumption
ENGINE TROUBLESHOOTING TABLE
IMPROPER DIRT IN DIRTY AIR
FUEL FUEL LINE FILTER
X X
X X X
X X
X X X
X X X
X
X X X
X X
X X
X
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FAULTY BLOCKED
ENGINE
SPARK FUEL
OVERLOADED
PLUG FILTER
X X X
X X X
X X
X X X
X X X
X
X
X X
X
X X
INCORRECT DIRTY INSUFFICIENT
OIL AIR BATTERY
LEVEL SCREEN CHARGE
X
X
X
X
X
X
X
X
X
X
X
X