Trouble Shooting - Exmark Lazer Z Operator's Manual

7. TROUBLE SHOOTING

7.1 MOWER PULLS LEFT OR RIGHT (W/LEVERS FULLY FORWARD).
a) For Serial Nos. 370,000 and Higher: Refer to Tracking Adjustment Section 4.1.3.
For Serial Nos. 369,999 and Lower: It is common for a machine to pull
slightly left or right with levers fully forward. Move levers forward and
compensate as necessary.
b) Check air pressure in tires; 13 psi/drive, 13 psi/pneumatic casters.
Note: Some units have semi-pneumatic casters (without a valve stem)
which do not require inflation.
c) Check reverse indicator and motion control linkage adjustment. See
section 5.2.12 and 5.2.13.
7.2 MOWER CUTS UNEVENLY.
a) Check air pressure in tires; 13 psi/drive, 13 psi/pneumatic casters.
Note: Some units have semi-pneumatic casters (without a valve stem) which
do not require inflation.
A more uniform cutting height may be obtained with higher tire pressure on
rough terrain.
A lower tire pressure provides more flotation. Higher pressures in front
casters may cause them to shimmy on hard surfaces.
b) Check deck support chains.
c) Check deck leveling (See Adjustments Section 5.2.2.)
Note: The front of the mower deck will be approximately 1/4" lower than the
back of the mower deck. This is the "rake" of the deck.
d) Check blades tip to tip for straightness (they should be within 3/16" or one
blade width from being in line.)
7.3 ENGINE WILL NOT START.
a) Make sure the battery has a full charge. See section 5.1.3 for charging
instructions.
b) For all units except Kohler EFI: Be sure the throttle control is midway
between the "SLOW" and "FAST" positions, and the choke is in the "ON"
position for a cold engine or the "OFF" position for a warm engine.
c) Make sure there is fuel in the fuel tank and that the fuel valve is open.
d) Be sure the seat switch is properly adjusted. See Section 5.2.6.
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.
- 49 -