</font><font color="blue" class="small">( my 224 pulls a KK 5' with no problem straight up my mountains never noticed any hesitation....I thought the 224, 254 and 284 engines are the same)</font>
You must stay in low range when mowing then, or (maybe?) your 224 is a two cylinder (more torque). My three cylinder JM254 mowed fine in H1, as long as I was on level ground or downhill slopes. As soon as I turned around to go back uphill, I had to shift both transmission AND transfer case - and mow in L3. Then back to H1 at the top. To mow constantly in L3 was just too bloody slow. As I said, that was with a 5 foot bushhog behind a 25hp Jinma. It's one of the reasons I traded up to the KAMA.
As far as the engine, it depends upon how the dealers ordered them. They might be all 3 cylinders now, but I'm sure there are still some deuces around. The 224 was available with either a 95x100 two cylinder (TY295) or a 80x90 three cylinder (Y380). The 254/284 was most commonly ordered the 85x90 three cylinder (Y385), but 254s were also available with a 105x100 two cylinder (TY2100). Google for Jinma Engine Specifications , you'll see what I mean. It's confusing at best.
Adding to the confusion, engine size very often dictates overall length. Thus, a two cylinder version may be somewhat shorter than it's three cylinder brother - but both could be called a 224. Stretching this out to the ridiculous, you might even find a 3 cylinder 224 to be longer than a 2 cylinder 254.
See what I mean?
//greg//