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Exmark FMD524 User Manual

Page 42

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h)

Check for loose or faulty wiring connections. If it is necessary to disconnect wire
connectors, Do Not pull on the wires.

i)

Check for corrosion at all wiring connections. Even minor corrosion may cause a
faulty connection. Clean connector terminals thoroughly, apply dielectric grease
and reconnect.

IMPORTANT: It is essential that all operator safety mechanisms be connected
and in proper operating condition prior to mower use.

NOTE: After carefully checking the above steps, attempt to start the engine. If it does
not start, contact your authorized Exmark service dealer.

ENGINE TROUBLESHOOTING

When a problem occurs, do not overlook the simple causes. For example, starting
problems could be caused by an empty fuel tank. The following tables list some of the
common causes of trouble. Do not attempt to service or replace major items or any
items that call for special timing or adjustment procedures (such as valves, governor,
etc.). Have this work done by your Engine Service Dealer.

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

Will not start

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