Exmark Lazer Z Operator's Manual page 50

e) Make sure the parking brake is set and motion control levers are moved
out (neutral lock position).
f) Check that the PTO is disengaged.
g) Check that the spark plug wires are properly connected.
h) Check for loose or faulty wiring connections.
i) 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.
NOTE: When disconnecting electrical connectors DO NOT pull on the
wires to separate the connectors.
NOTE: After carefully checking the above steps, attempt to start the
engine. If it does not start, contact your authorized Exmark service dealer.
IMPORTANT: It is essential that all operator safety mechanisms be
connected and in proper operating condition prior to mower use.
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 of
adjustments procedures (such as valves, governor, etc.). Have this work done
by your Engine Service Dealer.
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
7.4 ENGINE WARNING SYSTEMS
For Kohler EFI Units Only:
7.4.1 Electronic Control Unit Malfunction Indicator
The electronic control unit (ECU) continuously monitors operation of the EFI
system. If a problem or fault within the system is detected, the malfunction
indicator light (MIL) is illuminated. The MIL is the red light located on the control
console between the key switch and the throttle controls. Follow the
troubleshooting steps outlined in the Kohler engine operator's manual if the MIL is
illuminated.
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
- 45 -
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