Exmark Laser Z LZ18KC523 Operator'S Manual Download

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With a 5/8 wrench, turn both valves one turn counter-clockwise to release drive system.
Turn clockwise to reset system.

DO NOT overtighten. DO NOT tow machine.

4.1.11

Electronic Control Unit Malfunction Indicator: (Kohler 26 HP EFI units only) 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.

4.2 PRE-START

4.2.1

Fill fuel tanks. For best results use only clean, fresh regular grade

unleaded

gasoline with an octane rating of 87 or higher. Regular grade leaded gasoline
may also be used; however, combustion chamber and cylinder head will require
more frequent service. See Engine Owner's Manual.

DO NOT

add oil to gasoline.

DO NOT

overfill fuel tank. Never fill the fuel tank so that the fuel level rises

above a level that is 1/2” below the bottom of the filler neck to allow for fuel
expansion and prevent fuel spillage.

IMPORTANT:

The fuel system for Kohler 26 HP EFI units must be purged of all

air prior to start up if the engine has been allowed to run out of gas or the system
has been disassembled. See Section 5.1.24 for fuel priming (air purging)
instructions.

4.2.2

Make sure you understand the controls, their locations, their functions, and their
safety requirements.

4.2.3

Refer to Maintenance, Section 5, and perform all the necessary inspection and
maintenance steps.

4.3 MOWING

4.3.1

Open fuel shut-off valve (left or right tank).

4.3.2

Starting Engine:

For Kohler units Serial Nos. 251,999 and Lower and 22 & 23 HP Kawasaki
Liquid-cooled units

Operator must be in seat with brake engaged, motion control levers out
(neutral lock position) and

blade engagement switch “OFF” to start engine.

For Air-cooled units Serial Nos. 252,000 and Higher and 27 HP Kawasaki Liquid-
cooled units

Brake must be engaged, motion control levers out (neutral lock position)
and

blade engagement switch “OFF” to start engine.

(It is not necessary for

the operator to be in the seat to start the engine.)

On a

cold

engine, place the

throttle midway

between the “SLOW” and “FAST”

positions and pull

choke

(except Kohler 26 HP EFI units) to the “ON” position.

Turn ignition switch to the “start” position. Release the switch as soon as the
engine starts.

IMPORTANT: DO NOT crank the engine continuously for more then ten (10)
seconds at a time. If the engine does not start, allow a 60 second cool-
down period between starting attempts. Failure to follow these guidelines
can burn out the starter motor.

After starting a cold engine (except Kohler 26 HP EFI units), gradually return
choke to the “OFF” position as the engine warms up.

On a

warm

engine, place the

throttle midway

between the “SLOW” and “FAST”

positions and leave the

choke

in the “OFF” position.