2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 530Get this manual
ELECTRIC STARTER Check he commutator bars of th arm atu retor dis-
color ation NOTEDo nOI use emery san paper the commu -
COM MU TATOR BARS
Check for con tin uity between pairs of commutator barsThere sho ul be con ti nuity