Home › First-pull notes › Choosing fuel line for a small engine
Fuel line is the cheapest part on the engine and the one that cracks first. Match the inside diameter, then pick the material.
3/16 in fits most trimmers, Honda GX tanks and many generators; 1/4 in fits Briggs & Stratton walk-behinds, tractors and most mini bikes; 3/8 in is for cars, boats and large generators.
All three are rated for E10 and E85 fuel. Old line goes hard and cracks; replace it when it no longer bends without kinking.
Use a clamp at every barb and put the inline filter where you can see it, arrow toward the carburetor.
