Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 70Get this manual
Starter Motor Reassembly a 1Install brush assembly into the rear cover as shownaCommutatorLaminationShaft
ARMATURE COIL CONTINUITY METER TEST LEADS RED SEGMENT SEGMENT BLACK LAMINATION SHAFT X1 X1 METER SCALE READING NO CONTINUITY NO CONTINUITY