Most likely in the Haynes book, they probably just call it a 'pulley'. Having just written that, I have a look in one Haynes manual and it make no reference to even as much as a 'pulley'.
Cough. Last pages of the engine section. Timing gear. “Crankshaft Pulley” and photo.
just the pain pulley version.
early version calls it Crankshaft pulley wheel. In the picture assembly part.