Hi Sporter, and a warm welcome to the forum. Its nice to have you aboard, as we all like to learn new things and tinker here. wink
It is really nice to welcome a Masport Olympic 500 cylinder mower owner to the forum. grin
Grumpy is our resident Tecumseh guru and will help you through the diagnosis...If you follow his instructions carefully, he will lead you to a successful conclusion and hopefully have the engine running sweetly. wink

Once again Sporter, :welcome: to OutdoorKing.
cheers2

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin