To seal the two halves of the gear casing on my powered walk behind mowever, I keep seeing references to Dow Corning #709 sealant. However, I googled and cannot find it anywhere. Was it replaced by something newer? Thanks
You can use the Permatex RTV sealant available at NAPA and other places.
Here is a link that might be useful: Permatex 'Gasket Maker'
Thanks. I'll give that a try.