Description
This new K&L Supply air cut-off valve diaphragm repair kit (18-2825 / ACV-001M) is designed for select Yamaha YFM utility ATVs equipped with Mikuni carburetors. The kit includes the diaphragm, plunger, and spring required to restore proper operation of the carburetor enrichment circuit.
This system helps regulate the air/fuel mixture during deceleration to reduce exhaust popping and backfiring (“decel pop”) caused by unburnt fuel.
Ideal for carburetor rebuilds, maintenance, or restoring proper ATV performance.
Features:
Brand: K&L Supply
Part Number: 18-2825
Cross Reference: ACV-001M
Type: Air cut-off valve diaphragm repair kit
Includes diaphragm, plunger, and spring
Helps reduce deceleration backfire
OEM-style replacement components
Designed for Mikuni carburetor applications
Fitment:
Yamaha ATVs
YFM400 Kodiak (2WD / 4WD):
2002–2004
YFM450 Kodiak / Grizzly:
2003–2010
YFM660 Grizzly 4x4:
2002–2004
YFM250 Bear Tracker / Big Bear:
Select mid-2000s models
Notes:
Designed for Mikuni carburetor applications
Recommended during carb rebuild or service
Verify exact model compatibility before purchasing
