1970 Evinrude Ski-Twin, Ski-Twin Electric 33 HP Service Manual 4687, Page 69Get this manual
bRemove three nuts and five screws attaching starter bracket and mounting bracket to crankcaseSee Figure 7-7Lift starter and bracket off bracket studscRemove two thru-bolts from starter motorSeparate motor from bracket DISASSEMBLY OF STARTER
aRemove drive end head, taking care to avoid damaging bearing in head on teeth or armature pinionbRemove commutator head by tapping lightly with rubber malletRemove brushes and spring from holderLift armature from frame and field assemblySee Figure 7-5cTo disassemble starter drive, remove nut at top of drive housingNote the relative positions of the parts while disassembling to aid in reassembly laterSee Figure 7-8Figure 7-9Checking Armature on Growler
CLEANING, INSPECTION, AND REPAIR
aInspect the brushes; replace if one-half worn, damaged, or crackedReplace brush springs if weakbClean commutator with Grade 00 sandpaperIf commutator surface is unevenly worn or pitted, turn on latheRemove any trace of oil from commutatorcCheck the armature on growler for shorted turnsSee Figure -9Check armature for grounding by using test light or meterSee Figure 7-10