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f) Check that the spark plug wire(s) are properly connected.
g) Check for loose or faulty wiring connections. If it is necessary to disconnect
wire connectors, Do Not pull on the wires while disconnecting.
h) Check for corrosion at all wiring connections. Even minor corrosion may
cause a faulty connection. Clean connector terminals thoroughly with
electrical contact cleaner, 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 table lists 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