Exmark NAV20KC User Manual download pdf (Page 18)

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3.2.1 Check the voltage of the battery with a digital voltmeter. Locate the voltage reading

of the battery in the table below and charge the battery for the recommended time

interval to bring the charge up to a full charge of 12.6 volts or greater.

IMPORTANT: Make sure the negative battery cables are disconnected and the

battery charger used for charging the battery has an output of 16 volts and 7

amps or less to avoid damaging the battery (see the following chart for

recommended charger settings).

Voltage

Reading

Percent

Charge

Maximum

Charger Settings

Charging Interval

12.6 or greater 100% 16 volts/7 amps No Charging Required

12.4 – 12.6 75 – 100% 16 volts/7 amps 30 Minutes

12.2 – 12.4 50 – 75% 16 volts/7 amps 1 Hour

12.0 – 12.2 25 – 50% 14.4 volts/4 amps 2 Hours

11.7 – 12.0 0 – 25% 14.4 volts/4 amps 3 Hours

11.7 or less 0% 14.4 volts/2 amps 6 Hours or More

CAUTION

POTENTIAL HAZARD

♦ If the ignition is in the “ON” position there is potential

for sparks and engagement of components.

WHAT CAN HAPPEN

♦ Sparks could cause an explosion or moving parts

could accidentally engage causing personal injury.

HOW TO AVOID THE HAZARD

♦ Be sure ignition switch is in the “OFF” position before

charging the battery.

3.2.4 Connect the negative battery cables.

NOTE: If the positive cable is also disconnected, connect the positive (red)

cable and the red wire to the positive terminal on the battery first, then connect

the negative (black) cable and black wire to the negative terminal on the battery.

Slip insulator boot over the positive terminal.

NOTE: If time does not permit charging the battery, or if charging equipment is

not available, connect the negative battery cables and run the vehicle

continuously for 20 to 30 minutes to sufficiently charge the battery.

3.3 INSTALL DRIVE WHEELS.

3.3.1 Mount drive wheels with the valve stem to the outside of the unit. Secure using

four (4) ½-20 wheel nuts installed on studs in hubs for each wheel. Torque to

95 ft-lbs (128 N-m).

3.4 CHECK TIRE PRESSURE.

3.4.1 Check tire pressure in drive tires. Proper inflation pressure for tires is 15 psi

(103 kPa). Adjust if necessary.

Mower deck casters and rear caster tires are semi-pneumatic and do not need to

be inflated.

3.5 SERVICE ENGINE.

Engine is shipped with oil; check oil level and if necessary and fill to the appropriate

level with oil as specified in Engine Owner’s Manual.

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