I am trying to remove the engine from a 1978 Yamaha XS400. The tachometer cable goes directly into the top of the engine - I'm guessing it runs off a worm gear on camshaft. There is a screw at a 90 degrees to where the cable joins the top of the engine, almost seems like it's meant to clamp it in place.
The workshop manual simply says loosen the screw and pull out the cable. But the cable wont budge.
Would anyone know how to remove this?