Recent content by hisport

I have a Gravely PM260Z mower with a Kohler Command CV25s (spec 69536 sn 2923572521), showing about 1500 Hrs My plan was to do basically a ring and valve service, but it looks as if the piston rings are NLA, requiring new pistons. This is a 1999 model year engine Question for you Kohler...

Joined this forum because I found helpful posts Current project is a near 20 year old Gravely PM260Z (1425 hrs; CV25S kohler), given to me by a friend I look after my own mowers, plus the ones belonging to our local recreation center (Toro/Exmark and Hustler). I'm a retired engineer who can...