1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 249Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 249

a Disable ignition system by removin coil high tension lead from center of distributor cap and ground ulis lead to engine
No.2 ), hould be in followin limits: Standard-type voltage reg- 14-t0-15 volts Transistor-type vol treg- 13 .5-lo-14.5 volts
If not, it will be necessary to replace regulatorDO lOT ATTEMPT TO ADJUST REG LATORAfter repairing alternator or replacing
regulator, complete tes procedure once again to assure proper operation OVERCHARGED BATTERY 1Check batteryIMPORTANT: Remember
that an overheated battery wi ll be overcharged even though no charging ircuit defects are pre ent2If an obviou overcharge
condition exists as indjcated by excess iv battery water usag and, if batt ry is not overheated and not defec ti ve, remove
regu lator for repai rINDICATOR LIGHT OP ERATION WARNING: Ins tantaneous observation of test ammeter Dlus be made during
starting and acceleration g '''hen ammetcr readin drops to lowest reading, observe -O-A Testertandard-type voltage reg- 14-15