How to Know What Direction to Install the Fuel Filter in a The type of fuel filter required varies according to which Snapper brand model you own. However, most filters contain an arrow that points in the direction of the fuel flow. For proper.. Fuel Filter Installation Instructions | Briggs & Stratton Read here for instructions on how to properly install your fuel filter. Explore Our Family of Brands. RESIDENTIAL BRANDS. Fuel Filter Installation Instructions. For Service Part No. 394358S / DIY Part No. 5098. step-by-step instructions on how to locate your lawn mower engine model number and more! Browse Videos > Email Newsletter Sign Up.