mikuni

I think I need to increase the size of my pilot jet and maybe my main jet in my Mikuni carb on my bike. The main right now is 135 and the pilot is 42.5 which is stock I believe. I want to at least go up one size on the pilot as it seems to be lean and I cant fix it from changing the air/fuel...

Hey all. I picked up a low mileage but long-neglected 1979 XS400 for a song that the PO had started chopping up into a cafe build. The bike had been sitting for a long time and was not running. The cafe style is what I was going for anyway and I'm at the stage where I'd like to get her running...

Hi there, I hope it's ok to post this. I'm very new to the forum. I am in the UK and just bought an xs400j (Maxim). I was hoping someone has found some alternative forks for this bike because being in the UK, It's really hard to get frame & body parts. I'm not adverse to changing the head...

hey everyone ive been having a hard time locating anything on my mikuni carb for my 1984 xs400 seca. our goal is to tune it when we get it on the bike im looking for the idle screw but cant seem to locate it, and ive created this account to get help with it. but anything will help...

Hello I have a 1981 xs400h. I recently rebuilt the carbs(mikuni bs34 cv) but i noticed i do not have any pilot jet plugs. The reason i rebuild the carbs was because the left carb was leaking gas to the left air filter. Do i need to buy pilot jet plugs? The right carb never leaked any gas...

First off, I have a 1980 XS400G (That's what the PO told the other PO who relayed that to me when I bought the bike at least) but the VIN is 3F8, which the forum says is a XS400G Special 2 3F8 12/79 1980. The PO posted on here for a bit (Hey Kyle), and it seemed as though there were some...