1969 Evinrude 40 HP Big Twin, Big Twin Electric Lark Service Manual 4596, Page 94Get this manual
bInstall brushes in holdersPlace armature and drive end head in position in frame and field assemblyDowel pin must be aligned with opening in headcInstall commutator end headSpring washer must be in position under lower bearing, and dowel pin must be aligned with opening in headdInstall terminal stud bushings and nutsePolarize generator by making free motoring testSee Figure 7-18With 12.0 volts applied between armature terminal and ground (frame): -and with field terminal grounded, current should be between 5.0 and 6.0 amperes, and minimum 10.0 volts and the terminal studs are of different sizes to prevent incorrect assembly Place generator and bracket assembly on studs on power headInstall, but do not tightenstud nutscPush generator bracket toward rear of motor until stops on back of generator bracket make contact with the two machined pads on the cylinderTighten mounting bracket nutsdPlace belt on generator pulleyInstall pulley flange, lockwasher, and nuteAdjust belt tenSionThe generator strap and one of the bolt holes in the bracket are slotted so that the generator can be pivotedScrew and nuts should be finger tight, or just tight enough so generator can be pi voted by handBelt tension should be adjusted so that belt will give 14 to 38 inch under finger pressureSee Figure 7-19fMter adjusting belt tenSion, tighten nuts to torque speCified in Section 2, tighten screw on generator strap00 NOT tighten strap screw before tightening nutsRecheck belt tension after tightening nuts and screw