Yamaha 40X Owner's Manual page 74

Maintenance
equipped) and main switch. NOTICE: If
they are left on, the electrical system
can be damaged.
2. Disconnect the negative cable(s) from
the negative (-) terminal. NOTICE: Al-
ways disconnect all negative (-) ca-
bles first to avoid a short circuit and
damage to the electrical system.
[ECM01940]
3. Disconnect the positive cable(s) and re-
move the battery from the boat.
4. Clean, maintain, and store the battery
according to the manufacturer's instruc-
tions.
68
[ECM01930]