1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 259Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 259

PRECAUTIONS 1M PO RTA;'IT: in'e alter nator igned for ooly One polarity sys te m, fo lloWing precautions must be ob rved
eck wirin for fra ed worn insulation3Check mo unting bolts for tightness4Cbeck be lt fo alignment, proper tension and warBelt
tens ion shou ld be adju st as outlined in tep 4, Page 3C -19 Whe tightening be It tensio n, apply press l're against tator
laminations be twe en fram es and not against either end frame 5At perlodi interval s, remove external screen and tap ligbtly
bl ow compressed air to prevent creen from becomin cloggedBe sure to replace al sc rews durin reassembly TROUBLESHOOTING
Troubl in chargi ng system will show up as one of fo llowin conditi ons: 1' ndercharged battery, as iodi cated by slow cranking
and low specific gravi readings2Overch arged battery, as indi cated by ex cessi ve water usage UND ERCHARGED BATTERY c onn
ecti on nd battery 2If previous steps cb eck sa ti fact orily cbeck integral chargi sv tern as follows: aDi sconnect battery
ground ca blebConnec ammeter in circ uit at "BAT" terminal of integral cbarging systemcConne carbon pile across batte rylF