Vee_Que;103935 wroteThe teeth look round at the base.
mind you... I have seen idiot licensed mechanics fit the square tooth belt to a round tooth engine because the book says the belt is right (it even works for a while)
I've also seen mixed engines where the head has been replaced and it has a round tooth upper gear and square tooth lower gears...
@vo940 if you remove the 2 bolts at the front of the cover you can more easily pull the cover forward and get a better look at belt and other gears