Hi,
The engine in my 2007 554 Jinma is the Fujian Lijia SL4105ABT and it runs well. Don’t have too many hours on mine as I use it mostly in the winter for snow clearing etc. I don’t know if the engine design is original or not, but it sure does work well.
HTH
I have a Quanchai 3 cyl in my 12/07 Jinma 284, no problems so far, but I only have 120 hours on it. I’d want at least 1,000 hours before I’d comment on dependability. One observation, a mechanic friend of mine commented that the injection pump is a clone of the Bosch pump on his 1967 Mercedes. :scratch: