Weber Carb Fuel Filters
 

This is my 2nd year owning this 1997. Since I don't know the maintenance records, I was going to replace all the fuel system filters and do a tune-up. The boat is a 7.4L, Bravo 3, with the Weber carb. Is it necessary to replace the inlet filters? Are they part of a standard maintenance cycle? They do NOT look like they're easy to get to.