Thanks Peter. Here is the Illustrated Parts List:
http://bsintek.basco.com/BriggsDocumentDisplay/BInnCFXBnfBhU7y.pdfHere is the Operator's Manual:
http://bsintek.basco.com/BriggsDocumentDisplay/flmtxLX-nfBhU7y.pdfThe engine was made on 2 September 1998 in "Plant 56", which is actually an administrative center at Briggs HQ, not an engine plant. So far I've only seen this trick done on engines that were actually made in Plant 28, in Chongqing, which further supports AVB's information that this is a Chinese engine.
That rocker cover gasket has had the final gong and is due to be hauled off-stage by the bouncers, Peter. The attaching screws have been overtightened, which has destroyed parts of it, followed by the use of some unsuitable glue to supplement the gasket. This is trivial except that it tells you something about the previous tenant.
The carburetor is a Walbro LMS, which like most modern emissions carburetors is a bit more challenging and less forgiving than the pre-emissions Briggs carburetors, but is nevertheless a decent piece of equipment which should not be troublesome.
The technical manual (Briggs P/N 276781 Intek Single Cylinder OHV) makes no specific mention of the rocker cover that I can find. AVB is obviously familiar with the in-service information, and usual US service practice for this engine, so I accept his advice that the use of silicone RTV sealant in place of a gasket is commonplace and accepted. The RTV will peel off metal easily, and a new bead of it can be used each time you remove the gasket. I think I personally would replace the gasket rather than do this, because it is quicker and cheaper if you find yourself removing that cover fairly frequently.
