{"nhtsa_id":10115148,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2017-07-05","document_id":"1HD-D6J8Q-08","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"SERVICE BULLETIN M1450: LOSS OF POWER ON 2017 MILWAUKEE-EIGHT EQUIPPED WITH SCREAMIN' EAGLE STAGE III OR IV KITS. 2017 model motorcycles equipped with a Milwaukee-Eight? engine and a Stage III or Stage IV kit can experience loss of power during extended high rpm (Revolutions per minute) and/or highway speed operation. This bulletin provides the diagnostic procedure for determining if \"sumping\" is occurring. Sumping is when a higher than desired amount of oil is suspended in the engine crankcase, and the flywheel must travel through the oil, resulting in loss of power and potential engine component damage.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10115148-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10115148-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10115148","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HARLEY-DAVIDSON","model":"SCREAMIN EAGLE","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}