Hi Chad
The Decals, you will need to contact silensmessor, and ask as he may have them or could make them from an image ,I've
heard some sign writers have the machines to make them and sticker Manufacturers.
https://www.ebay.com.au/usr/silensmessor?_trksid=p2047675.m3561.l2559There is usually a filter in the air cleaner housing and a mesh screen but I don't have any original images of your
mowers filter.
I've seen people just put sponge in the housing or folded flywire even a stainless scrubber ,I guess the flywire and stainless scrubber work
better than no filter.
Cheers
Max.