Trouble Shooting - Exmark Lazer Z Operator's Manual

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
* On Kawasaki Liquid Cooled units check for dirty radiator core.
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.
For Kawasaki Liquid-Cooled Units S/N 370,000 and Higher Only:
7.4.2 Warning Buzzer: Located behind the seat on the right hand side. When the
engine is running and the buzzer emits a beep, the buzzer is warning signal the
user that the engine is overheating. Perform the following step.
1. Disengage the mower blade, and idle down the engine.
2. Look at the temperature gauge to determine if the temperature continues
to increase. If it does, turn the unit off and allow the engine and engine
components to cool.
3. Check the coolant level. If necessary, fill with coolant as described in
Section 5.1.2.
4. Remove any debris on or around the radiator that may restrict airflow.
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
- 50 -
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