Originally Posted by rogergendron1
stock main jet was real tiny.....say .69 or .70mm
i squeezed a .74mm saftey pin through it and it was real tight so i slowly worked it in twisting it around untill it slid in easy and snug.
main jet is now .74mm or .0285
edit.... it squeezes in snugly so i know its actually a size smaller... .73mm or .028 in
Order you these two items and you can drill the jet to exactly where you need it, and if it ends up being to big just put a small piece of solid wire solder in the jet heat it with propane torch and re-drill it, this is the best way I have found to jet the carbs correctly, cheap easy and it works perfectly, been doing it to mine since I started playing with these engine in 2009, Tom/2door and other taught me that little trick early on and it is best way to go in my opinion.
($3.97 wire gauge bit set)
($2.97 Pin Vise for bit)