MOTO4U 500ml Auxiliary Fuel Tank for Carburetor Tuning — Vented Compact Gas Tank with Shut-Off Petcock

MOTO4U's 500ml auxiliary fuel tank is a compact, vented hanging gas reservoir with a shut-off valve designed to supply clean fuel during carburetor tuning and small-engine service.

This lightweight, chemical-resistant tank replaces the motorcycle's main fuel supply so you can adjust jets, synchronize carbs, or test engines without the weight or hazards of the stock tank. Supplied with fuel hose, clamps, a petcock and an engine-side barb, the kit is built to be ready for shop or roadside use—whether you're working on motorcycles, lawn mowers, ATVs or small cars with carburetors.

How does this tank make carburetor tuning easier?

The MOTO4U auxiliary tank gives a steady, controllable fuel feed so you can make accurate adjustments with the main tank removed. Its vent prevents pressure differentials while the shut-off petcock lets you start or stop flow cleanly during inspections or jet changes.

• 500ml capacity for shorter test runs without excess fuel weight
• Built-in vent for consistent flow during tuning
• Petcock on/off control to stop fuel quickly when needed
• Supplied hose and clamps for immediate installation

Will this work with my motorcycle, mower, or small engine?

The tank is designed to be broadly compatible with carbureted engines that accept common 1/4" fuel line fittings. With the included engine-side barb and standard hose, it connects to most petcocks and carb inlets used on older bikes and garden equipment.

• Standard 1/4" fuel line (3.4 ft) suitable for many carb inlets
• Engine-side barb included to fit common fittings
• Two hose clamps secure the connections for leak-free operation
• Works with motorcycles, mowers, ATVs, small cars and generators

How safe and convenient is it to use in a workshop or roadside setting?

At 500ml the tank is small enough to hang from handlebars or clamp in a vise, reducing spill risk compared with handling a full main tank. Chemical-resistant construction and the shut-off valve let you control fuel exposure while you work, keeping the bench and tools cleaner and safer.

• Compact hanging design reduces accidental drops and spills
• Durable materials resist petrol and common workshop chemicals
• Petcock lets you cut flow when swapping jets or making adjustments
• Easy to stow and transport in a toolbox or shop bag

What comes in the package and how do I install it?

The kit arrives ready to use: the 500ml container, fuel hose, petcock, engine barb and two clamps are all included. Installation is straightforward—attach the hose to the petcock, clamp both ends, and connect the engine-side barb to the carb inlet or petcock on the bike.

• 500ml hanging fuel container with vent
• 3.4 ft of 1/4" fuel hose and two secure clamps
• 1/4" petcock shut-off valve and engine-side fuel barb
• No special tools required beyond pliers or a screwdriver for clamps

Who is this for? If you routinely work on carbureted motorcycles, ATVs, lawn equipment or perform tuning and diagnostics, this MOTO4U auxiliary fuel tank streamlines testing and adjustments. It's especially useful for DIY mechanics, professional tuners, trackside technicians, and anyone who wants a safer, neater fuel source while servicing small engines.