

Specifications
- Brand
- QuadBoss
- Part #
- 420587
- UPC
- 887337432052

QuadBoss 99-04 Yamaha YFM250 Bear Tracker Air Cut-Off Valve Kit
$33.78
Fits 1987-2004 Yamaha YFM350X Warrior. This QuadBoss Air Cut-Off Valve Kit includes all the parts needed to fix a malfunctioning valve, preventing poor running and deceleration popping.
Key Features
- Fits 1987-2004 Yamaha YFM350X Warrior, 1999-2004 Yamaha YFM250 Bear Tracker, and 1998-1999 Yamaha YFM400F Kodiak 4x4.
- Includes O-rings, diaphragm, spring, and screws to rebuild the air cut-off valve.
- Helps correct poor running conditions caused by a malfunctioning air cut-off valve.
- Addresses popping noises during deceleration.
- Components are included to repair all carburetors on models equipped with multiple carburetors.
Fits these vehicles
- Yamaha YFM250 Bear Tracker 1999-2004
- Yamaha YFM350X Warrior 1987-2004
- Yamaha YFM400F Kodiak 4x4 1998-1999
Product Details
If your Yamaha YFM350X Warrior is running rough or making popping noises when you let off the throttle, a sticking air cut-off valve could be the culprit. This kit from QuadBoss contains the necessary O-rings, diaphragm, spring, and screws to rebuild the air cut-off valve circuit, restoring proper function.
A properly working air cut-off valve is crucial for smooth engine operation, especially during deceleration. When these valves fail, they can stick open or closed, leading to a lean condition that causes backfiring and poor idling. This kit addresses those issues by providing all the small but vital components needed for a complete repair. If your ATV has multiple carburetors, this kit includes the necessary parts to service all of them, ensuring consistent performance across your engine.
Specifications
- Brand
- QuadBoss
- Manufacturer Part #
- 420587
- UPC
- 887337432052
Frequently Asked Questions
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QuadBoss 99-04 Yamaha YFM250 Bear Tracker Air Cut-Off Valve Kit




