Bruce,
Thanks for your prompt response. I have tried to get a manual from our local (Lawn Mower) retail and service ooutlet near Scorsby (Vic) and they told me they can't even get manuals for themselves, let alone customers. Not very nice....
Where can I find the info you require on model No. etc so as to identify the right motor. This is probably a very old motor (25+ years).
Many thanks
Warwick