Yz250JdT250
Member
- Apr 26, 2004
- 142
- 0
Hey everyone i have a 1998 Yz125 and i just bought a Pro Circuit Shorty silencer, when i bought the bike a few months ago, it already had a Pro Circuit pipe on it, with the stock silencer. So i was wondering about jets.. i looked at the one(the main jet) in my carb, it is a #340.The pilot jet did not have a number on it. So here are my questions.. This question is about the sizes, is 350 bigger than 340? or is it the other way around? like say the bigger the number is the smaller the jet is? Also i was wondering if i change the main jet do i need to change the main nozzle too?
I went to yamaha motor and found the jet sizes go from 330 to 340, 350, 360, and 370. There are also six different kinds of pilot jets. going from 40 to 45, 50, 55, 60, and 65. The different main nozzles are labeled S-5, S-6, S-7, S-8, S-9 and T-0. :blah:
I went to yamaha motor and found the jet sizes go from 330 to 340, 350, 360, and 370. There are also six different kinds of pilot jets. going from 40 to 45, 50, 55, 60, and 65. The different main nozzles are labeled S-5, S-6, S-7, S-8, S-9 and T-0. :blah:
