Re: 3hp carburetors

[DAN ANDERSON]

The change appeas to have happened between 1962 (JW-17) & 1963 (JW-18). Looks like just the needle was done away with & a non adjustable orifice was installed that the engineers felt was the optimal tune? Many like to tune their own motors for varying conditions. There was a kit made to put a needle back in motors for tuning purposes (high altitude) that you can still find today for different size motors. The needle just doesn’t stick out the front of the cowling. Takes a small screwdriver to adjust it. Hope that is what you had in mind.

Dan in TN