1978 Johnson 175, 200, 235 HP Outboard Service Manual, Page 152Get this manual
starter motor, washing dirt from the drive into the starter bearings, commutator, etcAfter disassembling the drive, clean each part with greas solvent and inspect for wear or distortion gThe starter solenoid is sealed unit and is serviced only as an assemblyTo test the solenOid, discormect leads to solenoid terminalsCormect an ohmmeter set to low ohm scale between terminals and BConnect 12 volt supply between terminals and DSee Figure 7-23Solenoid plunger should give an audible click and ohmmeter should read zero ohms (continuity)
PRESTOLITE Figure 7-21Checking Field Continuity