What size is the fuel line on a Briggs Lo206

So you're messing with a Briggs & Stratton LO206 engine, huh? Maybe building a kart, maybe fixing one up. Either way, getting the fuel line size right is one of those things that'll make or break your day. The fuel line on a Briggs LO206 uses a standard 1/4-inch inside diameter (ID) hose. That's the inner measurement, the part that actually matters for fitting snug over the tank outlet and carburetor inlet. Simple enough, right?

Why is the 1/4-inch ID the standard for the LO206?

The LO206 is built for spec racing and recreational karting, so everything's kinda standardized. Briggs & Stratton went with 1/4-inch ID because it delivers just the right fuel flow—not too much, not too little. A bigger hose? You'll get fuel pressure headaches and air pockets. Too small? Starvation at high RPM, which is no fun when you're trying to pass someone. Plus it matches the brass barb fittings on the stock pulse fuel pump and carburetor perfectly.

What type of fuel line should you use?

Okay, size is one thing, but material matters too. You'll want something rated for ethanol-blended fuels (up to E10 or E15). Here's what people actually use:

• Standard rubber fuel line: Cheap, flexible, easy to work with. Just check it's ethanol-resistant or it'll turn into goo eventually.
• Tygon or polyurethane fuel line: Clear stuff. Lets you see fuel flow and any crap floating around. Racers love it because it lasts longer and doesn't get brittle.
• Black neoprene fuel line: Good for hot engine bays, resists kinking better than some others.

Whatever you pick, make damn sure it's 1/4-inch ID. Don't eyeball it—measure it.

Does the fuel line size change for a pulse fuel pump?

If your LO206 has a pulse fuel pump (common when the tank sits lower than the carb), the main fuel lines—tank to pump, pump to carb—stay 1/4-inch ID. But the pulse line itself? That's smaller. Usually 1/8-inch ID or 3/16-inch ID. Don't mix them up. I've seen guys grab a 1/4-inch hose for the pulse line and wonder why their engine runs like garbage. Keep fuel lines 1/4-inch, pulse lines tiny.

What about the fuel line from the tank to the carburetor on a gravity-fed system?

Gravity-fed setups? Same deal. 1/4-inch ID from tank outlet to carburetor inlet. Just make sure the hose isn't so long it loops around and traps air. Engine vibrates, moves around a bit—you need some slack, but not a spaghetti mess. Cut it clean, route it smooth.

What size is the outer diameter (OD) of the fuel line?

Outer diameter isn't critical for fitment, but it's useful for hose clamps. A 1/4-inch ID line usually has an OD around 7/16-inch to 1/2-inch, depending on wall thickness. Grab a #6 or #8 adjustable hose clamp (those cover 5/16-inch to 7/8-inch) and you're golden. Don't overtighten—you'll crush the hose.

People Also Ask about Briggs LO206 fuel lines

Can I use a 5/16-inch fuel line on a Briggs LO206?

Nope. Don't even try. The carb and tank fittings are made for 1/4-inch ID. A 5/16-inch hose will be loose, leak fuel, suck air, and generally make a mess. If you force it on, you might crack the fittings. Just stick to spec.

Where can I buy the correct fuel line for a LO206?

Hit up karting supply shops, hardware stores, or online places. Look for Tygon, Briggs & Stratton brand, or marine-grade fuel line. Some karting retailers sell pre-cut lengths specifically for the LO206—saves you some hassle.

How do I measure the fuel line size on my LO206?

Pull the line off the carb. Use a drill bit or calipers to check the inside diameter. A 1/4-inch bit should slide in snug. Or just look at the carb fitting—it's designed for 1/4-inch. If you're unsure, replace it with a known 1/4-inch ID hose. Better safe than sorry.

Do I need a fuel filter for the LO206?

Yeah, absolutely. Throw an inline filter with 1/4-inch barb fittings between the tank and pump (or carb on gravity setups). Keeps crap out of the carb. Just make sure the filter doesn't restrict flow—standard small-engine filters work fine.

Table: Fuel Line Specifications Briggs LO206

Checklist: Installing the correct fuel line on your LO206

• Measure twice: Confirm the ID of your new hose is 1/4-inch.
• Choose material: Select ethanol-resistant rubber, Tygon, or neoprene.
• Cut cleanly: Use a sharp knife or hose cutter for a straight, clean end.
• Install filter: Place an inline fuel filter between the tank and the carburetor or pump.
• Secure clamps: Use #6 or #8 hose clamps on all connections to prevent leaks.
• Check for kinks: Route the line smoothly without sharp bends or kinks.
• Test for leaks: Run the engine and inspect all connections for fuel seepage.

Expert Insight: Why the correct fuel line matters

Get this wrong and you'll chase gremlins forever. Wrong size means inconsistent fuel delivery, crap throttle response, hard starts—maybe even engine damage. The LO206 is built for competition, so it's picky. Stick with 1/4-inch ID and your engine gets what it needs at every RPM. I've seen racers blow engines because they grabbed a 5/16-inch hose and created a lean condition. Don't be that guy. Double-check everything before you button it up.