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michael silva
michael silva, Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 3
Experience:  Owner at Mikes Moto Repair
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I have a 2006 yfz 450 yamaha that i have replaced

Customer Question

i have a 2006 yfz 450 yamaha that i have replaced stator,replaced voltage regulator and the resistor and still wont charge
Submitted: 19 days ago.
Category: Motorcycle
Expert:  michael silva replied 18 days ago.
I know you have replaced all your components. Let's test them individual.Wires coming out from the stator, how many wires and what color are they?I need to know that way we can check AC voltage.
Customer: replied 18 days ago.
White and yellow and red and white
Expert:  michael silva replied 18 days ago.
Can you send me a picture, if not that's ok. White and yellow are bullet connection and red and white are in its own plastic connection, correct?
Customer: replied 18 days ago.
White and yellow are alternator and red and white pick up coil wires
Customer: replied 18 days ago.
White to ground I get 00.2
Expert:  michael silva replied 18 days ago.
00.2 tells me OHMS are in good range.With all wiring connected, prob the white and yellow wire for alternator with multimeter in Ac volt setting, start the machine, what is your average Ac volt normal idle 1200-1500rpm and peak Ac volt around 4000 rpm aka high idle. Numbers we are looking for fall between 13-85 Ac volts.
Customer: replied 18 days ago.
Ok I will check that when I get home this evening
Customer: replied 18 days ago.
Ok yellow and white connected with engine running 13-85 actually volts
Expert:  michael silva replied 18 days ago.
Side note-Be sure to make sure all battery cables are bare metal, to the lead terminals on the batter. Make sure you have a good battery to frame connections and remove any paint, etc thAt will effect contact.Make sure mounting tabs on frame for voltage regulator have no paint.
Customer: replied 18 days ago.
Ok
Customer: replied 5 days ago.
Mr silva i am just getting back to working on my charge issue i checked white and yellow ac volts with engine running and it is 3.45
Customer: replied 5 days ago.
Does that mean the new stator is bad
Customer: replied 4 days ago.
Are you still talking to me or i need to repost i have been out of pocket since we last talked with a family emergency just getting back to it.
Expert:  michael silva replied 4 days ago.
Sorry about late reply. According to your results, yes faulty stator. Every time stator is replaced is good idea to replace regulator as well.over at https://ricksmotorsportelectrics.com sell combo kits, stators and regulators to get you going again for around $160.Hope this helps.
Customer: replied 3 days ago.
i checked ac volts with regulator unhooked and resistor unhooked engine running and i am only getting 6 volts