Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 278Get this manual
2Guide armature and end frame into housing as shown 6Install end cap to housingTorque nuts to 25 lbin{2.8 Nm}
3Align scribe mark on housing to mark on end frame 4Install lubricated O-ring to end frame
End Cap Motor Housing Wave Washer Washer