2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 271Get this manual
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CRANKCASECRANKSHAFTBALANCER
Remover weight 07741-001 0201
Attachment, 37 40 mm 07746-0010200
Attachment, 42 47 mm 07746-0010300
or 07936-371020A or 07936-3