Join Date: Aug 2007
Location: Miami FL
Motorcycle: 86 7/11 86 1100 87 1100 89 750 95 xr650l 86 ATC 125m
Re: Carb questions for the oiler
14.7mm I believe, but check the service manual sticky.
I would get new plugs, valve job, then remove the carbs and go throu them.
In my experience is best to take your time with the carbs and do everything in one shot. Write down your carbs settings in a piece of paper , then clean them. New pilot screw o-rings,actually it would be best to replace all of the o-rings in the carbs, set float height,synch.
Also very inportant that the fuel tank is clean of rust. If not you'll be cleaning the carbs every month.