Fuel Mixture Screws

Select your vehicle to see Fuel Mixture Screws that fit

Fuel Mixture Screws

A fuel mixture screw sets how much fuel mixes with air at idle and just off idle on a carbureted engine. Turning it in or out leans or richens that low-speed mixture, which affects starting, idle quality and throttle response. Riders often revisit this setting after changing an exhaust or intake, riding at a different elevation, or when the engine hangs or stumbles off idle. An extended screw puts the adjustment where you can reach it by hand, so small changes are easier to make on the trail or in the pits.

We currently have 1 fuel mixture screw in stock, from All Balls Racing: the All Balls Racing 06-14 Honda TRX450ER Extended Fuel Mixture Screw.

  • Confirm the part fits your exact model and year before ordering.
  • Get the main jetting right first, since a mixture screw only fine-tunes the low-speed circuit.
  • Note your starting position and adjust in small steps.
  • Make adjustments with the engine fully warmed up.

To see what fits your machine, use the selector to pick your vehicle.

Fuel Mixture Screws

A fuel mixture screw sets how much fuel mixes with air at idle and just off idle on a carbureted engine. Turning it in or out leans or richens that low-speed mixture, which affects starting, idle quality and throttle response. Riders often revisit this setting after changing an exhaust or intake, riding at a different elevation, or when the engine hangs or stumbles off idle. An extended screw puts the adjustment where you can reach it by hand, so small changes are easier to make on the trail or in the pits.

We currently have 1 fuel mixture screw in stock, from All Balls Racing: the All Balls Racing 06-14 Honda TRX450ER Extended Fuel Mixture Screw.

  • Confirm the part fits your exact model and year before ordering.
  • Get the main jetting right first, since a mixture screw only fine-tunes the low-speed circuit.
  • Note your starting position and adjust in small steps.
  • Make adjustments with the engine fully warmed up.

To see what fits your machine, use the selector to pick your vehicle.