It's a chinese L186 style 10hp diesel like a Tomahawk or Sigma. I love how it runs but it has a blueish smoke that makes your eyes burn.
The boiler has been great for us, my biggest complaint is my inlet passage gets clogged over time, its hard to clean the clogged area and as a result have burned up a few fans. Pretty bummed about the warranty and difficulty to get parts but same as you I can fix most mechanical things. We are heating 2700sq ft and we never fill it for a 12 hour burn. I find it runs better with several smaller loads (3) of wood vs 1 load of wood for 24 hours. Ultimately what works for us is, I load it at 6am my wife loads it at 6pm. We burn almost exclusively white pine.
The boiler has been great for us, my biggest complaint is my inlet passage gets clogged over time, its hard to clean the clogged area and as a result have burned up a few fans. Pretty bummed about the warranty and difficulty to get parts but same as you I can fix most mechanical things. We are heating 2700sq ft and we never fill it for a 12 hour burn. I find it runs better with several smaller loads (3) of wood vs 1 load of wood for 24 hours. Ultimately what works for us is, I load it at 6am my wife loads it at 6pm. We burn almost exclusively white pine.