From the owner's manual:
A. HOUR METER/BATTERY DISPLAY
The hour meter records and digitally displays the
hours that the tractor has been operated (tenths of an
hour-right most digit).
NOTE: The hour meter is activated whenever the ignition
switch is turned to an ‘On’ position. Keep a record
of the actual hours of operation to assure all maintenance
procedures are completed according to the
instructions in this manual.
• When key is turned to the "ON" position, the
battery indicator light briefly illuminates and the
battery voltage is briefly displayed. The display
then changes to the accumulated hours.
• The hour meter display will also remind the
operator of maintenance intervals for changing
the engine oil. The LCD display will alternately
flash, “CHG” ; “OIL”; and the accumulated hours
for five minutes after every 50 hours of recorded
operation. The maintenance interval lasts for two
hours (from 50-52, 100-102, 150-152, etc.). The
LCD will flash as described for five minutes every
time the tractor’s engine is started during this
maintenance interval. Follow the oil change
intervals provided in this manual.
B. INDICATOR PANEL/HOUR METER
The indicator panel/hour meter uses indicator lights to
display the status of various functions of the tractor,
and also records the accumulated hours of operation.
Battery Indicator
• Illuminates when the ignition switch it turned to an
ON position and the engine is not started.
• Illuminates to indicate the battery voltage has
dropped below 11.5 (+0.5/-1.0) DC volts (battery
voltage is also displayed on the hour meter). If
this indicator/display comes on during operation,
check the battery and charging system for possible
causes and/or contact your Cub Cadet dealer.