If this is the little Honda the filter may not be available. I've run into this a number of times with older Japanese equipment. If memory is right it uses a foam filter. You'll need to find a foam filter that's larger for some other engine and cut it down to size. Don't use foam for your EZ chair, it is not the same stuff.

Hey Walrus;
Sorry it took so long to get back to you but had unexpected inlaws spending time over the house. What fun! I picked up a foam briggs filter and cut it with scissors kind of rough any thoughts on any other cutting methods.