- Jul 25, 2009
I have a '72 Combat engine with 932 twin Amals. The current needle has two rings above the grooves. I am a bit confused as it looks like this is the correct needle for the 750, but with the 30 mm carbs. It looks like the 32 mm carbs are supposed to have a needle with four rings above the grooves, but it also lists that as proper for the 850. I have a 106 needle jet and a 220 main. The bike is faultering at about 4000 RPM which I am thinking is the upper range of the needle jet. I have the clip in the top groove, so it is possible the wear has gotten to the point of needing new, or maybe it was the wrong needle for a Combat in the first place. Any advice appreciated, but particularly if it is correct!