Thanks Grumpy. I will investigate these possible issues.
It is a single btw. I will need to pull the rocker cover off as it seems there is a leak there. Apart from that it looks like a well maintained motor. The intake side of things look spotless and as I've mentioned before well maintained mower engines seem to be a rarity at the prices I look at anyway.
Do these motors prefer the SAE 30 weight oil?
