Hi everyone, and thanks for the warm welcome to the boards on the 'introductions' page.
I went to look into a couple of leads given by board members. On closer inspection I spotted some oily, felty looking gunk high in the cooling fins behind the cover. So off came the cover...to my dismay what I saw was just the tip of the iceberg. I blew out what I could with compressed air but it isn't properly clean yet.
Should I spray a bit of degreaser in there and hose it out, or would that be risking damage that I am unaware of? I can't see any exposed electrical parts as this engine appears to have a magnetic pickup for spark timing.
Anyway, the result of this is that I have not started it up again to report what I observe for grumpy's diagnosis. ...I'll keep ypu posted and take a few more pictures for Ty.
Cheers.