yamaha yz450f

  1. Help yamaha yz450f 2017,high idle ,failure

    Hello. This is a Yamaha yz450F 2017 motorcycle, 125 motorhour.The problem is that when the engine is hot,the coolant temperature reaches temperatures above 100 ° C , idle speed remains at 4000 rpm and does not decrease . But when I turn off the engine, I'll start again ,The idling speed is...