I have tried the "remove spark plugs and crank the engine" to no avail.
The motor seems to strain and not spin freely. I suspect he has siezed it at some point and got a tow home!
Is there an emergency method I could use whereby I could run the HP pump via the existing belt and a battery drill to bring the pressure up?
Any advice would be appreciated, although the missus would be happy if my attempts were unsucessful.
Regards,
Nick.