Hawk 250 Mikuni 30mm Carb Jetting Land Elevation of 600 Feet

[Alexander M]

I got the Mikuni Vm26 30mm carb for my Vitacci Pentora 250 and I live about 150ft above sea level so I'm pretty close to sea level. So far all I have added was just a Nibbi high performance intake and took off the exhaust silencer. It runs pretty nice but I do have to start it with the choke for a sec and then take it off. Do you guys feel I should change any of the Jets with the upgrades I have so far and my elevation? I don't know much about carb jetting so I want to know what setting would make it run as perfect as possible. It seems like it runs a tad on the lean side as well.

[Megadan]

Originally Posted by Alexander M

I got the Mikuni Vm26 30mm carb for my Vitacci Pentora 250 and I live about 150ft above sea level so I'm pretty close to sea level. So far all I have added was just a Nibbi high performance intake and took off the exhaust silencer. It runs pretty nice but I do have to start it with the choke for a sec and then take it off. Do you guys feel I should change any of the Jets with the upgrades I have so far and my elevation? I don't know much about carb jetting so I want to know what setting would make it run as perfect as possible. It seems like it runs a tad on the lean side as well.

If it needs full choke to start and the air temps are over 50F, then it idles fine once warmed up it may just need the idle mixture adjust out a little bit. If it has any stumble or hesitation on very light throttle at low speeds as well, then it might need a step up on the pilot jet.

Do you know what jets are currently in the carb?