Hi grumpy. Thanks very much for your reply. I'm a little time poor so its taken me a while to try the things you've suggested. I tried a different fuel cap and fitted a new gasket to the carburetor mounting flange and I'm satisfied the governor is moving freely however there is no change to the way the engine runs. It does however run smoother at idle and revs with the choke half closed. Looking forward to your next suggestion.
Thanks. Bergy.
