Hello

I have Honda HRB215 SXA lawnmower with GXV140 engine. The motor starts and runs perfectly. However the engine is dripping oil below (about 1 drop per second). Honda dealer said the oil seal at top end of crankshaft was probably pushed from excessive pressure (if the engine had too much oil).

I removed the blades and did not notice any oil leaking from the oil seal at the bottom of the crankshaft. However I noticed oil dripping from inside bottom edge of cylinder. Looking at the parts list diagram online I notice that there is a cylinder head gasket that could be leaking. However if there is a leak here I imagine that engine should not run that smoothly.

It's possible that I flooded the engine with oil (it's so hard to read the oil gage with my old eyes). How can can I tell whether the oil is leaking from the top crankshaft oil seal or from the cylinder head? Also, I could not find anything on the internet on how to replace the cyclinder head gasket for this engine or how to get access to the top oil seal. Appreciate any suggestions

Thanks