I just hot rodded my quad and stopped it to check the plug. It is still very light in color. She feels like it could go up to 200/205.

I am currently running 190/195. It feels like it looses it a bit in the top end.

The max jet size is 200. I don't think this is going to do it. What do you do if you are at max jet size and it is still too lean?

Is there a replacement jet for the mikunis?

 

Are you running the 190-195 mikunis in your stock carbs now?I am currently using 185-190 in my stock carbs with my 690 and i still cant get rid of the low end hesistation.If you can get your motor to run strong from top to bottom with the larger mikunins i would like to know how because it seems that no matter what i do i still have a hesitation on the low end.My top end power with my 185-190 mikuni mains is very strong with my stock carbs and this is with 110 octane fuel FYI. I should also add that i am using the six-six t adaptor with two k&n air filters.

 

lift your needle up one clip,

 

If it is a sputter, lean your needle one clip. If it is a hesitation, richen the needle one clip.

I have mine leaned second position from the top.

The main jets have a small affect on low end. So when start getting up there in the mains, is starts to run to rich low. That is the way it worked on my raptor. It may be cause of my big gun exhaust, which is all top end.

 

Actually max main jet size is about 230 for the stock carbs. The problem is they arent availible in increments of 5 past 200. I believe its 210, 220, and 230.

You have a fairly aggresive build going. Typically peope in the same position as you have a couple options. One is get a new carb setup, the other is to bore out the stock carbs to about 33.5mm. There are advantages to both, but price is the main issue.

You may also want to see if your carb boots have been properly cleaned out so that they are not restricting air/fuel flow from the carbs to the engine. Some port jobs make the inlets larger and many times the boots are neglected.