MTD ZT 50 Charging The Battery, Battery Maintenance, Battery Storage, Servicing Electrical System

Models: ZT 42 ZT 50

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CHARGING THE BATTERY

CHARGING THE BATTERY

Test and, if necessary, recharge the battery after the tractor has been stored for a period of time.

A voltmeter or load tester should read 12.6 volts (DC) or higher across the battery terminals.

Charge the battery with a 12-volt battery charger at a MAXIMUM rate of 10 amps.

Voltmeter

State of

Charging

Reading

Charge

Time

12.7

100%

Full Charge

12.4

75%

90 Min.

12.2

50%

180 Min.

12.0

25%

280 Min.

 

 

 

BATTERY MAINTENANCE

The battery is filled with battery acid and then sealed at the factory. However, even a “maintenance free” battery requires some maintenance to ensure its proper life cycle.

Spray the terminals and exposed wire with a battery terminal sealer, or coat the terminals with a thin coat of grease or petroleum jelly, to protect against corrosion.

Always keep the battery cables and terminals clean and free of corrosion.

Avoid tipping. Even a sealed battery will leak electrolyte when tipped.

BATTERY STORAGE

When storing the tractor for extended periods, disconnect the negative battery cable. It is not necessary to remove the battery.

All batteries discharge during storage. Keep the exterior of the battery clean, especially the top. A dirty battery will discharge more rapidly.

The battery must be stored with a full charge. A discharged battery can freeze sooner than a charged battery. A fully charged battery will store longer in cold temperatures than hot.

Recharge the battery before returning to service. Although the tractor may start, the engine charging system may not fully recharge the battery.

SERVICING ELECTRICAL SYSTEM

A fuse is installed to protect the tractor’s electrical system from damage caused by excessive amper- age. Always use the same capacity fuse for replacement. If the electrical system does not func- tion, check for a blown fuse. See Figure 22

If you have a recurring problem with blown fuses, have the tractor’s electrical system checked by your White Outdoor dealer.

GOOD BAD

Figure 22

Relays and Switches

There are several safety switches in the electrical system. If a function of the safety interlock system described earlier is not functioning properly, have the electrical system checked by your White Outdoor dealer.

LUBRICATION

Using a pressure lubricating gun, lubricate the front castor axles and pivot axle with a No. 2 multi-purpose grease after every 10 hours of service.

Refer to the "MOWER DECK" section later in this manual for deck lubrication procedures.

Periodically lubricate all other pivot points with a quality lubricating oil.

TIRE MAINTENANCE

Check the tire air pressure after every 50 hours of operation or weekly. Keep the tires inflated to the recommended pressures. Improper inflation will shorten the service life of a tire. See the tire side wall for proper inflation pressures. Observe the following guidelines:

Do not inflate a tire above the maximum pressure shown on the sidewall of the tire.

Do not reinflate a tire that has been run flat or seriously under inflated. Have a qualified tire mechanic inspect and service the tire.

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MTD ZT 50, ZT 42 manual Charging The Battery, Battery Maintenance, Battery Storage, Servicing Electrical System, Lubrication