1968 Evinrude Speedifour, Starflite 85HP Service Manual, Page 14Get this manual
TROUBLE TROUBLE 7STARTER MOTOR WILL NOT OPERATE
CHART (CONT) CAUSE STARTING CIRCUITSee Section Loose corroded battery connections Safety switch inoperative (adjustment) Throttle advanced too broken battery connections Weak shorted battery Defective key starter switch Jammed starter drive Damaged starter drive parts Worn brushes Broke!) brush spring Open circuit in solenoid Burned commutator Broken field terminal Shorted open windingsarmature field Ammeter to key switch fuse blown EXCESSIVE STARTER CURRENT DRAWSee Section Worn dry armature shaft bearings Excessive friction in engine Brushes not seating Dirty corroded commutator Loose pole pieces Shorted armature field Bearing heads buckled