HELP! Have Prairie 300 4 X 4 that won't start. Suspect fuel filter(s) but don't remember where filter outside the tank (there's two inside tank) is although years ago I did find it with similar fuel problem. Also if someone can explain these filters usage in the vehicle. For example why have filter(s) inside the tank when one outside in the fuel line (which I can't find at this time) can suffice? If my starting problem is not because of filters then will love advice about how to find actual trouble. Thanks....I'm a newbie and when I say newbie I mean really newbie.