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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
Rm 250 questions/help please!
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[QUOTE="2-Strokes 4-ever, post: 1406921, member: 58946"] We have an '03, and yes they're a nightmare to jet. Finally dialed ours in though... We change the jets 3 times a year depending on temps. Woods ridden (probably leaner than an MXer would want)- 70-90 degrees- 500-1500 elevation- Yamalube/93 octane @ 40:1- 7.0 slide 42 pilot YZ250 needle euro-spec slot 2 (1/2 clip richer than USA spec) 168 main 50-70 degrees- 45 pilot needle same 170 main 30-50 degrees- 48 pilot needle same main same The OEM needle is the problem... it goes from rich-to-lean too quickly and no combo of pilot & main remedies it. We still have a slight knock in the midrange when under a load, but it's easy to work around it. *We put RTV silicone on pipe's o-rings before install. [/QUOTE]
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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
Rm 250 questions/help please!
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