Exmark NAV20KC, NAV27KC 7. TROUBLE SHOOTING

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7. TROUBLE SHOOTING

a) Refer t o Tracking Adjustment Sect ion 4. 1.3.

b) Check air pr essur e in drive tires; 15 psi

Semi-pneumatic casters do not require inflat ion.

a) Check air pr essur e in drive tires; 15 psi.

Semi-pneumatic casters do not require inflat ion.

A more uniform cutt ing height m ay be obtained with higher tire pressure on

rough t er r ain.

A lower tire pressure provides mor e flotation.

b) Check deck suppor t pins are secure and correct spacer s ar e position under

hairpins.

c) Check deck leveling (See Adjustments Section 5.2.2.) .

Note: T he front of the mo wer deck will be approximately 1/4” lower t han t he

back of the mower deck. This is the “rake” of t he deck.

d) Check the dist ance from t he bottom edge of the deck skirt to the tip of each

blade. Measurement should be within 3/16".

a) Make sure the battery has a full charge. See section 5.1.2 for charg ing

instructions.

b) Be sure the thr ottle control is midway between the “SLOW” and “FAST”

positions, and the choke is in the “O N” posit ion for a cold eng ine or the

“OFF” posit ion for a warm eng ine.

c) Make sure ther e is fuel in the fuel tank and t hat the fuel valve is open.

d) Be sure the seat switch is proper ly adjust ed. See Section 5.2.7.

e) Make sure the parking brak e is set and speed control levers in the neut r al

position.

f) Check that the PTO is diseng aged.

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 connect ions. Even minor cor rosion may

cause a fault y connection. Clean connector terminals thoroughly with

electrical contact cleaner , apply dielectric grease and r econnect .

NOTE: When disconnecting el ect ri cal connectors DO NOT pul l on the

wires to separate the connect ors.

NOTE: Aft er caref ully checking the above steps, attempt to start the

engine. If i t does not st art , contact your authorized Exmark service dealer.

IMPORTANT: It is essential t hat all operator safet y mechanisms be

connected and in proper operating condi t ion prior to mower use.

When a problem occurs, do not overlook the simple causes. For example:

starting pr oblems 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 ma j or items or any items t hat call for special t im ing of

adjustment s pr ocedures (such as valves, governor, etc. ) . Have this work done

by your Engine Service Dealer.