Hi BluHT
I'm confused at your instructions as the series of numbers are not usually near the HT lead hump, rather they are stamped into the edge of the engine air cowl that's tucked in alongside the carby area and not on top as you suggest.
Hi Watson,
The numbers will be in 3 sections and the ones that are closest to the top of the cowling will give us the date when the engine was made in the USA, from there it is around 4~6 months later that the actual machine was constructed and the engine mated up to it in the Thebarton Factory. The first numbers (lowest to the bottom of the engine) are the identity of the actual model engine it is.
As far as manuals are concerned you won't find anything on the Rover site at all as these early machines were made by Scott Bonnar prior to Rover ever having anything to do with SB machines and as such the later Briggs Engines are somewhat different from those early days.
The manual for this motor is available on this sites manual section.
Cheers,
BB
