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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
125 dying at low rpm's...
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[QUOTE="usgpru27, post: 938465, member: 58332"] I had the same issue with my 01 CR125 when I got it this year. I run 50/50 race gas to premium pump 40/1. I am running a 30 pilot with the air screw at 2 3/4. The range in the book for the screw is up to 3 turns out till you go to the next size. I have the stock needle as well as the one leaner 69 needle. I have the 69 on the second clip and a 350 main. This is at about 1000ft. with 75 deg. temp and medium humidity. Not sure if this helps but after you go through it (head gasket and top end) lean out you low circuits a bit. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
125 dying at low rpm's...
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