Sometimes it bum starts .sometimes 25 kicks.one time i cleaned carb and put new fuel in started in 2 kicks only to go back to hard starting at riding area.bought it used seems stock.seems to have lots of compresion and when it does start it runs perfect.ihave killed a new set of boots in one summer
I used to own a yz426f and it had the exact problem... a fresh plug will fix your problem. change the plug and the bike will run great. also don't start the bike and shut it off , my bike would be fine if i started it and rode for a while getting to the proper heat range help save the plug. if my bike didn't start in one or two kicks it was usually the plug.
hope this helps
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I can take the breather loose from back of carb and it will start when cold . After it warms up it starts on first kick and runs great.
I bought the bike with the carbs of .what i cant tell i order the factory boots and a new set of carbs .when i try to put the set on it wont go on the head.its like the boots are too small ?
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