2004 SR Johnson 2-stroke 40, 50HP Service Manual, Page 104Get this manual
ELECTRICAL ELECTRIC STARTER SERVICING Assemble end cap to frame and field, aligning notch and ribA suitable tool for holding brushes in place can be made from putty knifeInstall cup on armature shaftPress cup down on spring and install retaining ring in groove on armature shaftPull cup up over retaining ring and confirm ring seats in shaft groove and cup groove to allow full bendix travel
Put drop of oil on thru-bolts before assembling starter motorInstall thru-boltsTorque thru-bolts 95 to 100 inIbs(11 to 12 Nm)Seal with Black Neoprene DipInstall pinion base and pinion on armature shaft