Many thanks for the offer - I will definitely take you up on it sometime!

I have a number of concerns with my engine (Yanmar 2QM15), the impeller not least among them. My exhaust manifold is also cracked and has been repaired with J-B weld (and poorly so at that). Tracking down a replacement for it proved a challenge.

I actually went out and tracked down a full 2QM15 engine that's currently sitting in my storage unit. It runs well but has issues starting in the cold. The current thinking is to cannibalize it for parts to repair whatever's broken or degraded on my current engine. I figure it's always good to have a spare.