2004 SR Johnson 2 Stroke 9.9, 15, 25, 30 HP Outboards Service Manual, Page 106Get this manual
ELECTRICAL ELECTRIC STARTER SERVICING IMPORTANT: Reversing these brushes cause starter motor to run backwardswill Install pinion base and pinion on armature shaft Install brush holder, brush springs, and ground brushesScrews secure ground brush leads and holderInsert insulated brushes in holder
Install spacer and spring on armature shaft
Assemble end cap to frame and field, aligning notch and ribA suitable tool for holding brushes in place can be made from putty knife