Thanks to all the help I got by just reading through the old S/N posts here I found my serial number. However it isn't recognised when I go to order parts (impeller kit, plugs and zinc anode) on the mercpartsexpress<br /> http://www.mercurypartsexpress.com/PartsExpress/ProductSelection/ServiceParts/SPhome.asp <br /><br />The serial number is 9695919 and starting with a '0' to bring it to 8 digits didn't work. The number is covered on http://www.marinshopen.se/ as a valid '92 number.<br /><br />It's a 3cylinder 3 carb with automix and PTT and I bought it this year in the UK. The cowl graphics say Mariner and then 'Seventyfive' in a kind of flourished text. <br /><br />My thanks to anyone able to offer some guidance here.