1968 Evinrude Big Twin, Big Twin Electric, Lark 40 HP Outboards Service Manual, Page 17Get this manual
TROUBLE TROUBLE 7ST ARTER MOTOR WILL NOT OPERATE
CHART (CONT) CAUSE STARTING CIRCUITSee Section Loose corroded battery connections Safety switch inoperative (100se) Throttle advanced too far broken battery connections Weak shorted battery Defective key starter switch Jammedstarter drive Damaged starter drive parts Worn brushes Broken brush spring circuit in s01enoid Burned commutator Broken fie1d termina1 Shorted windingsarmature fie1d EXCESSIVE ST ARTER CURRENT DRAWSee Section Worn dry armature shaft bearings Excessive friction in engine Brushes not seating Dirty corroded commutator Loose pieces Shorted armature fie1d Bearing heads buck1ed