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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Starting The 250F..... AGAIN
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[QUOTE="Rich Rohrich, post: 152912, member: 16241"] Ivan - Changing the idle adjustment CAN have an effect on starting, but it has to do with the slide position and it's effect on pressure differntials in the carb. For the starter circuit to function it has to see a pressure difference between normal atmospheric (provided through the vent tubes) and the pressure in the carb throat in the slide area. Changing the height of the slide will change the speed of the air through the slide opening and the pressure along with it. So it makes sense that a specific rpm setting could translate to a specific slide opening that optimizes the functioning of the starter circuit. But as Lou pointed out the rest of it is flawed logic at best. :) I wouldn't be surprised if the '02 ignition system or the magneto itself is designed to function better at a lower cranking speed. Given how difficult it can be to kickstart the 250F at times but how easily it starts by spinning it up faster via a push start, it makes sense. I sent an e-mail to Okie yesterday asking him if I could test an ignition related item on his bike in an attempt to improve starting. A lot of people have been suspicious of the ignition on the piglets. If my test works out I'll let you guys know. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Starting The 250F..... AGAIN
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