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CR125R fouling plugs! 2t newbie help

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hi everyone i bought a 00 CR125R in great condition, top and bottom ends have been done fully. but im fouling plugs after 1 hour of riding, and i dont have the service manual or know what the stock jetting is from a chart.

plug is a ngk br8es, wet and oily when i get it out (im running rich i guess)

the airscrew is 1 3/4 turns out

usually warm to hot 25-40 degrees celcius

300m above sea level.

carby is a mikuni

has new full FMF sst and shorty exhuast

also i will check the reeds as i dont know ther condition

any help would be appreciated

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go to fmf website cause when you get the new pipe u should rejet.

check your voltage cause 1 hr is extreme

clean and re oil your air filter

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go to fmf website cause when you get the new pipe u should rejet.

check your voltage cause 1 hr is extreme

clean and re oil your air filter

ok thanks i have found the fmf jetting sheet that came with the pipe. so should i jet it to stock or to my environment

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when was the last time u changed your exhaust packing?

just it to the bike

put a new plug in the bike

let it warm up,

drive around on 1/4 throttle, dont move the throttle do this for about 1 to 2 minutes release off the gas and kill the engine at the same time and look at the plug. you can google plug mixture to see what it should look like. do this for 1/4 1/2 3/4 and full. for the 3/4 and full go somewhere like a long road. 3/4 ' full only stay on the throttle for 30 seconds to 1 minute but pull in the clutch kill the engine while off the gas and check the plug and your bike plugs will last a really long time but it take time to master carb tuning

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