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Yamaha MX & Off-Road Dirt Bikes
YZ250F Won't Start the conventional way
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[QUOTE="wrooster, post: 115456, member: 21800"] wts1982, do you use the yamaha 4stroke starting drill? 0) engine cold=use choke / engine hot=use hot start button 1) take your hand off the throttle, rest it on brake master cylinder 2) push the kickstarter down gently until it's firm (=TDC) 3) pull the compression release lever 4) push the kickstarter down another inch (5 degrees or so) 5) let out the compression release lever 6) allow the kickstarter to return to the top of it's stroke 7) kick it like you mean it, but NO throttle. never turn the throttle! some more questions: when you do get it started, does it idle ok? does it accelerate up from idle ok without load? with load? my advice, put the needle back at stock. the needle doesn't affect starting to any large degree. solve the starting problem first, then you can work on the other areas. also, do not "push thru" the hard spot at TDC without using the compression release lever, this will eventually lead to a snapped starter shaft--not the kickstarter lever itself but the round shaft that disappears into the engine. much $$$ to fix this. the wrooster ps my brother has the yz250f and i've got the wr250f. his came set up perfect, i had to fuss with the fuel screw on mine a bit (it was set too rich). for the first few times the bikes are hard to start. but now, after a couple of hundred miles, both start on the 1st or 2nd kick, hot or cold. also, eventually you get used to the "drill" and it just becomes second nature. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ250F Won't Start the conventional way
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