As I recall it, this was a very short-lived idea of Victa's. One of its problems was that there was no way of visually checking the element.
Our family business used to get a few mowers with this setup come in for service in the 70's, and we'd change them out to a replaceable element filter; there were standard parts available to do this.
Cheers,
Gadge
"ODK Mods can explain it to you, but they can't understand it for you..."
"Crazy can be medicated, ignorance can be educated - but there is no cure for stupid..."
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