One of my riding buddies bought his 300 on Friday and his starting problems began on Saturday. His bike will crank over really good like the starter and battery is working perfectly but the engine will not start or even try to start. If he gives it a half kick with the kick starter it's instantly running. He had to wait to pick his bike up because the dealer was waiting on a re-flashed ECU. I believe his problem is either in the relay or wiring if the bike has a separate circuit that powers the ECU during cranking. If there isn't a separate circuit then it would have to be an ECU problem when the voltage is low during cranking and not able to properly power the ignition. I could have easily traced it out for him if he would have got a manual with a wiring diagram but since he didn't get a manual of any kind it's going back to the dealer when they open on Tuesday.
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