When you mentioned 'hitting the crank with a hammer', figured it was the primary (pto) clutch. My prim. clutch (on the Yamaha 337) is two parts as I'm sure most are. I think a proper clutch puller would do the trick, think I will buy one. Did read something about NOT pulling the clutch off from the outside edges. The primary has zero bolt holes for pulling.
Anyhow, sorry if off topic, going to look at my machines this weekend.
