Jetting 18mm Mikuni carburetor

[Duffman]

Hey fellas, I'm trying to rejet my 18mm Mikuni carburetor. I live in Pa. The temperature here has dropped into the 20'a-30's and I need to rejet and need suggestions on jet sizes and where I can get them, any help would be immensely appreciated!

 

[Venice Motor Bikes]

I would start by finding out what size jet is in it now, & then buy a few jets in next bigger sizes... (colder air needs more fuel)

You can find cheap jets on eBay.


Another good performance trick for winter riding is to install a hotter spark plug

 

[Duffman]

Thanks fellas, I appreciate you advice and my jets came in yesterday. I gotta ride!!

 

[Larry Trotter]

What size worked for you?