Exmark NAV20KC, NAV27KC manual Install Drive Wheels, Check Tire Pressure, Service Engine

3.2.1Check 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	Percent		Maximum		Charging Interval
Reading	Charge		Charger Settings
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.

3.2.4Connect 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.

3.3INSTALL DRIVE WHEELS.

3.3.1Mount 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).

3.4CHECK TIRE PRESSURE.

3.4.1Check 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.

3.5SERVICE 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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