1983 Yamaha 30EN Outboards Service Manual, Page 171Get this manual
STARTER MOTOR DOES NOT TURN OVER
ELECTRIC
Fuse Burnt out Battery 1s the battery fu Jly charged? Wire harness connector Faulty Neutral safety switch Faulty Main switch Faulty Starter relay Fau Ity Starter motor Overrunning clutch or damaged pinion Carbon brushes are worn Carbon brush springs are fatigued Commutator is worn Armature coil or field coil is broken or shortedArmature shaft bushing is worn, Lacks oil