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Dirt Bike Mods & Maintenance
help a brother out with his kaw!
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[QUOTE="KC10Chief, post: 1027471, member: 56389"] I have an 01 KX250 and I was having the same problem as you. I went down only ONE size on the main jet. The jet was around $5 at the dealer. This solved my problem. I haven't fouled a plug in over a year. I would NEVER run my oil at 60:1 no matter what some oil rep guy told me. You'll be burning your motor up soon I'd imagine. I run a 40:1 mixture. If you're fouling plugs at 40:1, don't change the oil mixture, change your jetting! It's a piece of cake to do. Remove carb, take the bowl off, unscrew old net, screw in new jet. You can't even tell a difference when you compare the two. But it will help. I also run the cheaper NGK plugs that are around $3.50 each. I tried one of the $10 iridium plugs once and I couldn't tell one iota of difference. Stick with the cheap plugs, run your oil at 40:1, and change your jetting. I promise you, you are going to regret it later if you keep running that fuel mixture. Also, there was somebody on here saying they didn't get how by running a RICHER mixture at 60:1, that solved your problem. I don't get his way of thinking. Sure, there's more fuel compared to oil, so you COULD call it a richer mixture, but it's not really. As far as oil, it's LEANER. At 60:1, you are running less oil through your engine than at 40:1. That's less oil to burn which means you're not fouling your plug. But you're ALSO not lubing your engine properly in my opinion. Switch your fuel back to 40:1, and go buy a leaner jet. They're only a few dollars and super easy to change. I've also done my own fork seals. You can get the seals and wipers for around $40. It's a bit tricky when you do the first one, but after that, they're not bad at all. I would highly recommend getting the manual, and also recommend getting some seal savers. They're around $20. Since I put seal savers on in 2004, I haven't had any fork seal problems at all. I change the seal savers out once a season too since they stretch out a bit. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
help a brother out with his kaw!
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