Your not really getting what TNWalker is pointing out Ryan....

I've got three YS110FZ engines and all three seem to have small differences in intenral and external components, whether it is a different con-rod, crankshaft, regulator, and even the crankcase..

...Same with trhe YS160DZ's I have seen two taken apart side -by side and the found them with different fuel pump components....In no way is it a complaint, I don't have a problem with it, but it is reality...

Richard