Trouble Shooting - Exmark Lazer Z HP Operator's Manual

Note: The front of the mower deck will be approximately 1/4" (6.4 mm)
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"
(4.8 mm) or one blade width from being in line.)
6.3 ENGINE WILL NOT START.
a) Make sure battery is at a full charge.
b) 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 4.2.5.
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
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
37
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
OIL AIR
LEVEL SCREEN
X X
X X
X
X
X
X
X X
X