main from 105 to 110.
wanted to go from 14 to 17.5 on pilot. Local yamaha mech. at dealership did not have pilot. he said the regularly drilled out the pilot one drill size up (what that means i have no idea) he took it back drilled it and gave it back to me at the counter. said it should work and sent me on my way. I installed the jets and opened up the air box. took out the snorkle, drilled a 2 1/2 hole next to snorkle hole, took out the screen and put it all back together. pulls great just can't make it idle.