how do I find hp on YT6700?

[rpwolf]

I'm selling my YT6700, but forgot what hp it is.  How do I find out what hp engine it has?

[rattosh51]

The 5700/6700/6800 have a metric displacement of 573cm-03, which I believe is 22hp, vertical OHV.
The engine model number is stamped to the right of the oil filter.