by Skywatcher » Wed Dec 23, 2020 1:06 pm
Hi Again Lefty
Looks like this is a foam block with a bolt hole through it. Foam block can be quite tricky to cut, so here's what I've done in the past. Take a pre-filter foam wrap from an old Honda, Kohler or Onan engine or the like and give it a good wash out with solvent followed by dish detergent and hot water to get it as clean as possible. The IPL for your generator shows a metal plate sitting just above the filter block. Use this metal plate as a template to cut as many blanks as you need to make up the height of the original filter.
The blanks should be a friction fit into the filter housing so dirt can't get past the edges. A small leather punch is really handy for cutting the bolt hole through the blanks, if you don't have a hole punch, cut a small X so the bolt can pass through each blank. Now you can either apply a small amount of oil to each blank and stack them one at a time into the the housing, or use a light application of spray foam adhesive between each blank to form a filter block. Once the adhesive has fully cured, apply some oil to the newly formed block and install as per usual.
I have seen some people use Scotch-Brite pad material for air filters, but this stuff has a very open structure and can let dirt pass through the material. I have used this material as a backing support for an oiled foam filter, and as a pre-filter before a paper air filter figuring it would be less attractive to mice, but would not use it as filter material by itself. Hope this gives you a few ideas with which to work. All the best,
Sky
A person who sees Quality and feels it as he works is a person who cares.
A person who cares about what he sees and does is a person who's bound to have some characteristics of Quality.
Robert M. Pirsig. (Zen and the Art of Motorcycle Maintenance)