Exmark 4500-450 Lawn Mower User Manual


 
Maintenance
Charging the Battery
Removing the Battery
WARNING
Battery terminals or metal tools could short
against metal machine components causing
sparks. Sparks can cause the battery gasses
to explode, resulting in personal injury.
• When removing or installing the battery,
Do Not allow the battery terminals to
touch any metal parts of the machine.
• Do Not allow metal tools to short between
the battery terminals and metal parts of
the machine.
1. Park the machine on a level surface and disengage
the blade control switch.
2. Move the motion control levers outward to the
neutral position, engage parking brake stop the
engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Raise the seat.
4. Disconnect the negative (black) ground cable
from the battery post (Figure 28). Retain all
fasteners.
Figure 28
1. Negative battery post 4. Positive battery post
2. Bolt, washer, and nut 5. Battery strap
3. Terminal boot 6. Battery
WARNING
Incorrect battery cable routing could damage
the machine and cables causing sparks.
Sparks can cause the battery gasses to
explode, resulting in personal injury.
• Always disconnect the negative (black)
battery cable before disconnecting the
positive (red) cable.
• Always connect the positive (red) battery
cable before connecting the negative
(black) cable.
5. Slide the rubber cover up the positive (red) cable.
Disconnect the positive (red) cable from the
battery post. Retain all fasteners.
6. Remove the battery strap (Figure 28) and lift the
battery from the battery tray.
Charging the Battery
1. Remove the battery from the chassis; refer to
Removing the Battery.
2. Allowing batteries to stand for an extended period
without recharging them will result in reduced
performance and service life. To preserve
optimum battery performance and life, recharge
batteries in storage when the open circuit voltage
drops to 12.4 volts.
Note: To prevent damage due to freezing,
battery should be fully charged before putting
away for winter storage.
3. 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 chart below for
recommended charger settings).
36