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I have an 04 250 and the battery keeps going dead on me. i checked the charging system and im only getting 12.1 volts to the battery. how will i know if the stator is bad or the regulator bad?
check your PM.Does anyone have a manual that specifies what the stator should read?
Cool. You can swap in a higher output one if need be.Some good numbers there:
http://faq.ninja250.org/wiki/Alternator_Information
"Note that all stators make nearly their full power by 1400 RPM, which is approximately idle speed." and it also points out that the stator starts to make less power above 4,000 RPM![]()