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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
2003 Rm 125 Help Plz
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[QUOTE="Chili, post: 699484, member: 29892"] First off I see your in Canada which means if you bought this bike in Canada it comes with the Rest of the World jetting specs instead of the USA jetting. Unfortunately those specs are [b]WAY[/b] too rich to even keep the bike running. If you do a search in this forum there is a few 2003 RM125 jetting threads with much info. While jetting is always fuel/oil/climate etc specific I dropped ours from the 560 main straight to the USA spec of 460 right out of the box and I am still pretty rich on the main I think. As for the plug I would tend to replace the plug when it fouls versus cleaning it of course you might change your mind when you find out what the stock spec'd plug is worth at the dealer :eek: You should have got some jets in the spare parts kit that came with the bike so you might want to start stepping it down a few main sizes and go from there. As for the ratio pick one and stick with it and make your adjustments to the jetting. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
2003 Rm 125 Help Plz
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