Greetings stuart1866, May I extend a warm welcome to the ODK Forums.
As far as year of manufacture goes, we can get a pretty close estimate from the numbers on the engine. Presuming that it's original to the machine, that is.
The numbers are the Model, Type and Code; and they are to be found on the engine cowling, just above the spark plug.
Cheers, Gadge
"ODK Mods can explain it to you, but they can't understand it for you..."
"Crazy can be medicated, ignorance can be educated - but there is no cure for stupid..."
Thank you, from the date code on the Briggs, its a 1989 engine, and I am sure its the original as the owner I bought it from said he had it from new.
Done a full strip down and am de-rusting bits and rust treating the underside. Lucky the chassis is very heavy gauge metal and its really only surface rust.
I am amazed at the spares still available for it. Ordered a few things and most were over the counter.
Another question. I see you have a subscription area here. Do you have a manual for the 1866 specifically? I cant seem to find a listing of available manuals.