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which jet to get?large round,round,or small round?

main jet size as of now is 112.5 RD. i need 1 size smaller which is 110. they make a few types of 110 jets from hex to small round, i kno i dont need a hex type. RD is printed under 112.5 which sounds like round but the images for the round jet doesnt look like mine. the one that looks most similar is the large round jet, so do i go w/ this one. or jus get regular round.

here's where im looking at buyin from and has pics of the different types http://www.amazon.com/Mikuni-Main-Jet-Application-...

Update:

its running way too rich, the threads,tip,and porcelain part of the plug are all turnin black,it goes up about 4 of the threads, so i need less gas entering. you think 1 size down is plenty?

1 Answer

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  • 9 years ago
    Favorite Answer

    a main jet is normally a large round but the easiest thing to do is go to a motorcycle shop, not a dealership and they will be able to match it up and might have a used one

    why would you jet it down though

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