{"nhtsa_id":631270,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-05-21","date":"2002-03-27","document_id":"M2002007","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"SUBJECT REGARDING DRIVEN SPROCKET MOUNTING STUD BREAKAGE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/631270","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"YAMAHA","model":"YAMAHA","year_from":2000,"year_to":2001,"match":"exact","vehicle_ids":["2000_yamaha_yamaha","2001_yamaha_yamaha"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}