Battery Maintenance; Air Filter Use And Maintenance - Nortrac 35XT Owner's Manual

4.8 Battery Maintenance

4.8.1 Maintenance of Maintenance-free Battery
•
Inspection of the Battery.
Normally the maintenance-free battery does not require any special maintenance. You can observe the
power levels from the view hole of the liquid densimeter: Green=full power; Grey=lack of power; Dark=no
power.
•
The battery should be charged when the inspection hole becomes grey. It should be replaced when the
inspection hole becomes dark.
•
Battery Maintenance
The battery should be stored in a clean, dry and well-ventilated area,
with a temperature range between 32–104°F. The battery should be
handled with care and stored right side up.
The battery terminal should be securely fixed to the power socket.
Petroleum jelly should be used on the terminals to avoid fusion with
the connectors and corrosion.
Keep the battery outer terminals clean.
Check the alternator output voltage regularly. The voltage should be (14.2±0.25)V.
CAUTIONS:
1. When charging the battery, keep it in a ventilated area and far from open flames. Do not spill electrolytes
on your clothing or your skin. This can cause serious injury.
2. Over charging can create over-heating of the battery. In order to avoid a potentially dangerous situation,
the charging current should be reduced by half or charging should be stopped to lower the temperature.
When the temperature is safe, charging can begin again.
When charging is over, shut off the power in order to avoid a fire or explosion.

4.9 Air Filter Use and Maintenance

4.9.1 Air Filter Use Instructions
•
When the air filter blocking indicator shows red, or after the air filter works for 50-100 hours, the main
filter element should be maintained.
•
In dusty environments, the air filter element should be maintained every 8 hours or every working
period.
•
Replace the air filter element when the dust on it cannot be removed during maintenance, or the filter
element is damaged.
Maintenance Instructions
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Figure 4-2
1. Hydrometer
Inspection Vent