Engine troubleshooting table – Exmark NAV27KC User Manual

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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