Lawn Mower 1-633347 Cut-Off Fuel Valve - Fits Scag 2-Way 1/4" Barbs Steel Fuel Oil Gas - Replaces Exmark 633347 Husqvarna 539102679
1-633347 cut-off fuel valve kit with 1/4" barb valve, fuel filters, rubber fuel line, hose clamps, and grommets.
Package contents for 1-633347 fuel valve kit including cut-off valve, fuel filters, clamps, bushings, and fuel line.
Two 1-633347 cut-off fuel valves with red handles and 1/4-inch barbed fittings for Scag, Exmark, and Husqvarna mowers.
Infographic showing construction features of 1-633347 fuel cut-off valve with ergonomic handle and 1/4 inch barbs.
Two 1-633347 steel 2-way cut-off fuel valves with red handles and 1/4 inch barbs for lawn mower fuel systems.
Two 1-633347 steel 2-way 1/4 inch fuel cut-off valves with red handles for Scag, Exmark, and Husqvarna equipment.
Hands installing a 1-633347 cut-off fuel valve on a lawn mower engine with 5-minute installation instructions.
1-633347 steel 2-way 1/4 inch fuel cut-off valve with red handle for Scag, Exmark, and Husqvarna equipment.
1-633347 cut-off fuel valve kit with 2-way 1/4" barb petcock, fuel filters, hose, and clamps for Scag and Exmark mowers.
1-633347 cut-off fuel valve kit with 1/4" barb valve, fuel filters, rubber fuel line, hose clamps, and grommets.
Package contents for 1-633347 fuel valve kit including cut-off valve, fuel filters, clamps, bushings, and fuel line.
Two 1-633347 cut-off fuel valves with red handles and 1/4-inch barbed fittings for Scag, Exmark, and Husqvarna mowers.
Infographic showing construction features of 1-633347 fuel cut-off valve with ergonomic handle and 1/4 inch barbs.
Two 1-633347 steel 2-way cut-off fuel valves with red handles and 1/4 inch barbs for lawn mower fuel systems.
Two 1-633347 steel 2-way 1/4 inch fuel cut-off valves with red handles for Scag, Exmark, and Husqvarna equipment.
Hands installing a 1-633347 cut-off fuel valve on a lawn mower engine with 5-minute installation instructions.
1-633347 steel 2-way 1/4 inch fuel cut-off valve with red handle for Scag, Exmark, and Husqvarna equipment.
1-633347 cut-off fuel valve kit with 2-way 1/4" barb petcock, fuel filters, hose, and clamps for Scag and Exmark mowers.
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1-633347 Cut-Off Fuel Valve - Fits Scag 2-Way 1/4" Barbs Steel Fuel Oil Gas - Replaces Exmark 633347 Husqvarna 539102679

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1-633347 Cut-Off Fuel Valve

Key Features

  • Two-way inline fuel shut-off valve
  • Configuration: 1 fuel input, 2 fuel outputs
  • Enables switching between dual fuel tanks
  • Connection size: Fits 1/4 inch inner diameter fuel lines
  • Barbed fittings for secure line connection

Replaces / Cross-Reference Part Numbers

  • 1-633347
  • E633347
  • 482212
  • 539102679
  • 745059
  • 102679
  • 120-633
  • 11273

Compatibility & Fitment

  • Designed for zero-turn mowers and other equipment with a dual-tank fuel system.
  • Direct replacement for specified models from Exmark, Hustler, Husqvarna, Scag, and Toro.
  • Confirm fitment by checking your equipment's original part number.

When to Replace

  • Valve body is cracked or leaking fuel.
  • Control handle is broken, stuck, or difficult to operate.
  • Fails to completely stop fuel flow in the 'off' position.
  • Does not correctly switch fuel draw between tanks.

Installation Tips

  • Work in a well-ventilated area with a cool engine.
  • Use fuel line clamps to prevent spills when disconnecting lines.
  • Ensure new hose clamps are used on the barbs for a leak-free seal.
  • Verify the correct orientation of the single input and dual output ports before securing lines.
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  • WIDE COMPATIBILITY

    WIDE COMPATIBILITY

    Replaces part numbers: EXm, Lawn Boy, & Toro Part #E633347 & 1-633347, EL, Husq, Jonsered and more
  • DURABLE MATERIAL

    DURABLE MATERIAL

    This part is made of sturdy material which is flexibility and flame-retardant, enhancing durability
  • SAVING SOLUTION

    SAVING SOLUTION

    Enjoy the great feeling when your engine is repaired and works properly like before - BlueStars brings DIY solutions to help you deal with any trouble
  • SIMPLE INSTALLATION

    SIMPLE INSTALLATION

    The parts are designed to be easily removed and replaced, allowing for quick and convenient maintenance.
THE REPLACEMENT PART THAT KEEP YOUR YARD LOOKING FRESH!

THE REPLACEMENT PART THAT KEEP YOUR YARD LOOKING FRESH!

Outer Material
‎Alloy Steel, Plastic
Vehicle Service Type
‎Lawn Mower
Item Weight
‎0.19 Kilograms
Style
‎In-Line
Automotive Fit Type
‎Vehicle Specific Fit
Model
‎1-633347 2-Way 1/4" Cut-Off Fuel Valve
Item Weight
‎6.7 ounces
Manufacturer Part Number
‎1-633347

FAQ

This valve is a direct replacement for Exmark 1-633347 and 633347, Husqvarna 539102679, Scag 482212, Hustler 745059, Yazoo 102679, and Toro/Lawn Boy E633347. It also cross-references with industry standard numbers 120-633 and 11273.
This 1/4" two-way barb valve is compatible with a wide range of commercial and residential mowers, including various models from Scag, Exmark, Husqvarna, Hustler, Yazoo, Toro, Lawn Boy, Jonsered, Poulan, and Ariens ZTR units.
You likely need a replacement if you notice fuel leaking from the valve body, if the handle becomes seized or difficult to turn, or if the valve fails to completely stop the flow of fuel even when in the 'off' position. A faulty valve can lead to engine flooding or fuel dilution in the oil.
Installation is straightforward and typically takes 15–20 minutes. You will need a pair of pliers to slide the hose clamps back and a small container to catch any residual fuel in the lines. Ensure the engine is cool and the area is well-ventilated before beginning.
It is highly recommended to inspect your fuel lines for any signs of cracking, hardening, or dry rot. If the lines are brittle, replace them at the same time to prevent future leaks. Since this kit includes a new fuel filter, this is the perfect time to replace your old filter to ensure clean fuel delivery to the carburetor.
The primary cause of failure is the degradation of internal seals due to ethanol-blended fuels, which can cause rubber components to swell or harden. Additionally, debris or sediment in the fuel tank can become lodged in the valve mechanism, preventing a proper seal or restricting fuel flow to the engine.