On Sun, 03 Jun 2007 17:22:26 -0400, HK wrote:

I drain the
oil on the tractor's Kawasaki four stroke every 25 hours, and replace
the oil filter at that time, too.

What size Kawasaki?

I've got the 21 horse Husqvarna with the Briggs Intek V-twin - kind of
a Kawasaki clone. Great lawn tractor.