ENGINE TROUBLESHOOTING TABLE

PROBLEM

NO

IMPROPER

DIRT IN

DIRTY AIR

FAULTY

ENGINE

BLOCKED

INCORRECT

DIRTY

INSUFFICIENT

SPARK

FUEL

OIL

AIR

BATTERY

FUEL

FUEL

FUEL LINE

FILTER

OVERLOADED

 

 

 

 

 

PLUG

 

FILTER

LEVEL

SCREEN

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

 

 

 

X

X

X

 

 

X

 

 

 

 

 

 

 

 

 

 

 

consumption

 

 

 

 

 

 

 

 

 

 

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Image 46
Exmark Lawn Tractor manual Engine Troubleshooting Table, Problem