1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 238Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 238

DISTRIBUTOR TRIGGER, SW IT CH BOX and CO IL 1Re move brownwh it45 an bla ck tri gge leads fr om wi tch box and conn ec brownwhile
coi lead and ground(Figure 6) Lf spark is observed cros air gap, original tri gge is not fun ctioning and shou ld be replaced
as outlin ed under "Thunderbol Ignition ervl cefollowingbIf no spark is obse rvedand "chc k"-lik noi se emi ts from ign tion
coil, coil is sh orted and shou ld be re pla cedcIf no park is obse rved nd co il cli is nOl hea rd, re mo test trigger and
proceed as followsRem ove wires from witch box and in stall ne sw tch boxConnect all wires and re peat "Checkin for park