keihin pwk 28 needle jets

Colin,

I have a PWK38S.

The #'s for our needdles don't match up, The letters for mine are
W,J,K,L,M

Each stands for diameter of the straight portion of needle, not the length or tapered part.

W is thinnest (richest), M is thickest (leanest).

They go in increments of .01 mm.

If you have the needles and can measure them, you could tell if they follow the same rough order as mine, otherwise maybe someone else with the same carb as you will have the info you need.

Joe Chief

I suggest you check out (www.Keihin-us.com/needle.htm). It has everything
your looking for.