"Connor T" wrote in message
oups.com...
ok brilliant thanks. we have confirmed there is definately a spark!
if i do have to replace it, are they of a standard type? I know with
cars there's loads of different sorts, and i can't actually find an
exact model number anywhere on the engine. I guess the old plug may
have a code on it..

Thanks!
Dan

Try, http://www.briggsandstratton.com/

There is a section there on where to find the model number and what the
numbers mean, download the manual as well.

HTH
Anthony