Macdon 9250 SP User Manual Page 83

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Form # 46584 Issue 11/06 Web Rev_01
81
MAINTENANCE/SERVICE
Electrical System
BATTERY (continued)
PREVENTING BATTERY DAMAGE
1. Be sure alternator connections are correct before cables are connected to battery. See "Preventing
Alternator and Regulator Damage" in this section.
2. Carefully observe polarity when attaching booster battery.
3. Do not operate the engine with alternator or battery disconnected.
WARNING: With battery cables disconnected and engine running, a high voltage can be built
up if terminals touch the frame. Anyone touching the frame under these conditions would be
severely shocked.
4. Do not short across battery or alternator terminals, or allow battery positive (+) cable or alternator wire to
become grounded.
5. Do not polarize the alternator.
6. When welding on any part of the machine, disconnect battery cables and alternator wire.
7. To prolong battery life, store batteries fully charged and at +20° to +80°F (-7° to +26°C). Check voltage after
storage and recharge as needed, according to battery and charger manufacturer recommendations.
8. Do not stack storage batteries on top of each other.
CAUTION: When working around storage batteries, remember that all of the exposed metal
parts are "live". Never lay a metal object across the terminals because a spark or short
circuit will result.
BATTERY MAINTENANCE
CAUTION: Do not attempt to service battery unless you have the proper equipment and
experience to perform the job. Have it done by a qualified dealer.
1. Check fluid level once a year
. If necessary add distilled water (or clean rain water) to bring level to bottom
of cell neck. Do not add water in freezing temperatures unless engine is run two to three hours to mix
electrolyte.
2. Check battery charge once a year
, more often if operating in cold weather. Hydrometer readings should be
1.260 to 1.300. Readings below 1.250 indicate charging is required. See "Charging Battery".
3. Keep battery clean by wiping it with a damp cloth.
4. Keep all connections clean and tight. Remove any corrosion and wash terminals with a solution of baking
soda and water. A light coating of grease on terminals (after cables are attached) will reduce corrosion.
5. A replacement battery must have a rating of at least 640 cold cranking amps at 0°F (-18°C).
IMPORTANT: BATTERY IS NEGATIVE GROUNDED. Always connect starter cable to the positive (+)
terminal of battery and battery ground cable to negative (-) terminal of battery. Reversed polarity in battery or
alternator may result in permanent damage to electrical system.
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