Funny...
The oil filter on my PT422/EH65D is a Robin p/n 261-65902-A0.
I've crossed this to a Baldwin B33, AMSOIL SDF10, Pennzoil PZ37, and Fram PH4967. (Based on all these numbers I'm sure we can all cross them to other common filters.) I've verified size and thread on the Pennzoil and Fram. They match. Once warranty's up I might just try them out!
I'm curious, also, as to whether anyone else finds it difficult to believe how hard it is to get to the oil filter on this engine the way its mounted in the PT.
On the subject of maintenance parts, I've gotten four or five recommendations on spark plugs. Anyone have anything they've been told to pass along on this subject?
And what about hydraulic filters? The Purolator H32010 and Gresen K22001 I've seen in other posts do not match up exactly with the PT filter on my 422. The seal is about a 1/16" less in diameter and the filter isn't as long.
Brent