Honda BF115A, BF130A Outboard Motors Shop Manual., Page 364Get this manual
HONDA BF115A-130A
SHORT CIRCUIT TEST CORETOCOMMUTATOR Check for continuity between the commutator and armature coil coreIf continuity exists, replace the armature-
SHORT CIRCUIT TESTSHAFTTOCOMMUTATOR Check for continuity between the commutator and armature shaftIf there is continuity, replace the armature
SHORT CIRCUIT TESTARMATURE Place the armature in an armature tester (commercially available)Hold hacksaw blade close to the armature coreIf the blade is attracted to the core or vibrates when the core is turned, the armature is shortedReplace the armature