1968 Evinrude Big Twin, Big Twin Electric, Lark 40 HP Outboards Service Manual, Page 85Get this manual
CLEANING, INSPECTION, AND REPAIR Check bearings forroughness side end playBearings must replaced if they show roughness or wear DO NOT attempt to relubricate bearingsremove drive end head bearing, remove three screws attaching bearing retainer to drive end headUse arbor press to remove and reinstall bearingsCheck brushes for cracking or wear, and replace if more than one-half worn
dCheck generator field and armature with grow1er for shorts, opens, and grounding, as described under "Starter, Cleaning, Inspection, and Repair"
Figure -16Generator
REASSEMBLYOF GENERATOR
Assemble armature, bearing, and bearing tainer to drive end head
REMOVAL OF GENERATOR FROM POWER HEAD
Remove generator flange removing attaching nut and lockwasherLoosen thru-bolt nuts to permit release of belt tensionLift drive belt off See Figure 7-16Disconnect generator armature and field leadsRemove nuts from generator bracket studsRemove screw attaching ring gear guard to generator bracketLift bracket and generator from power head