Kxf450 2014 , won’t start unless u connect a battery (shouldn’t need a battery )

keithastles
Edited Date/Time 4/20/2021 7:16pm
Hi all so was on the bike most of the day Saturday all good running perfect , left it in the shed few days and now won’t start , had a new stator already tried another condensor , soon as u give it 12v straight to condensor it starts 1st kick , once running it seems to be only running at 9v , has anyone ever had this problem see a few folk have posted about the 12v thing but not anyone posted there findings , thanks
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Paul_Pitzonka
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Paul_Pitzonka 4/19/2021 4:27pm
4/19/2021 4:27pm Edited Date/Time 4/19/2021 4:31pm
Chase the schematic; by installing a battery into the circuit in place of the capacitor you eliminate both the stator and voltage regulator/rectifier from the circuit...the 9v while running would lead me to believe it’s either a faulty stator (just because it’s new doesn’t mean it works) or a faulty regulator rectifier (your prior post said your old stator burned. The stator shown here is a 3 phase system... from my understanding if one of the phases are lost by a bad diode internally in regulator the other two legs carry more current; which in turn generates more heat possibly explaining the prior stator damage)... check your grounds too... Also no need to start two threads...
keithastles 4/20/2021 10:34am
4/20/2021 10:34am
Hi yeah my stator was damaged and earthed out , is there a way of checking the regulator ?
keithastles 4/20/2021 10:35am
4/20/2021 10:35am
Also is that the correct wire of diagram for my bike thanks
Paul_Pitzonka
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Paul_Pitzonka 4/20/2021 10:50am
4/20/2021 10:50am Edited Date/Time 4/20/2021 11:07am
That’s the correct schematic yes... Unfortunately, some regulators can be bench tested some cannot it depends on the design of the regulator (I’m not familiar with Kawasaki’s design)... do a quick search on Google there’s plenty of in depth articles and videos on testing motorcycle regulators as well as stator output tests...

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kb228
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kb228 4/20/2021 7:16pm
4/20/2021 7:16pm
Sounds like a rectifier or capacitor issue since you replaced the generator

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