1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 94Get this manual
4Construct brush retainer tool as shown 5Place springs and brushes into brush holder and hold in place with brush retainer tool6Lubricate bushing with one drop of SAE 10W oilDO NOT over-lubricate
11661Brush Retainer ToolBushing
7Position armature into starter frame so that commutator end of armature is at end of starter frame where permanent magnets are recessed in(25.4mm)Align marks as shown8Install commutator end cap onto starter frame; align marks as shown, and remove brush retainer tool9Install thru bolts and torque to 70 lbsin(7.9 Nm)