The links are here:
Kawasaki FJ180V KAI: http://www.kawasaki-engines.eu/engin...es/fj180v-kai/
B&S Professional 875: http://bsintek.basco.com/BriggsDocum...DvrS8lFix2.pdf
To be fair, the Kawasaki is net where the B&S is gross, but in the end, they are probably virtually the same. The B&S might even edge out the Kawasaki due to 5% more engine displacement.