UPDATE

The vendor has contacted me by phone and tells me again that all lawnmower
engines are held on by only 3 bolts and that this is to reduce the chance
of
putting stress on the deck if it, or the engine base are not quite flat.
I'd
be grateful if anyone could confirm or contradict this.



3 holes/fixings yes, if they equally spaced.

The practice of the milk maid's stool holds fast here, 3 legs and stability.

I would like to see the fixing holes 120 degrees apart, not 90, 90 and 180!!

Mike