Description

Genuine MerCruiser OEM float engineered for precision fit and reliable fuel level control in marine engine fuel systems. This factory-specification component provides accurate fuel metering, proper carburetor operation, and long-term durability in demanding marine environments.

Key Features:

• Genuine MerCruiser OEM replacement part – factory quality and fit
• Precision-manufactured to exact specifications for proper fuel level control
• Marine-grade material engineered to resist fuel and saltwater exposure
• Designed to maintain proper buoyancy and fuel level throughout service life
• Lightweight construction for accurate fuel level sensing
• Factory-tested for dimensional accuracy and material compatibility
• Essential component for proper carburetor fuel metering
• Direct replacement for worn, damaged, or fuel-saturated floats

Technical Specifications:

• Part Number: 91691
• Application: MerCruiser Marine Engine Fuel Systems
• Type: Carburetor float
• OEM Quality: Factory specification

Function and Importance:

The carburetor float is a critical fuel metering component that controls fuel level in the carburetor bowl. It rises and falls with fuel level, operating a needle valve that regulates fuel flow into the bowl. Proper float operation ensures correct fuel level for optimal air-fuel mixture, smooth engine operation, and reliable performance. The float must maintain proper buoyancy and dimensional stability to provide accurate fuel level control. Worn or fuel-saturated floats can cause incorrect fuel levels, leading to rich or lean running conditions, poor performance, flooding, or fuel starvation.

Maintenance and Replacement:

Inspect the float during carburetor service for fuel saturation, damage, or deformation. Check for proper buoyancy by testing in fuel – the float should not sink or become heavy. Replace floats if they show signs of fuel absorption, cracking, deformation, or if fuel level is incorrect despite proper adjustment. Always use genuine OEM floats to ensure proper material specifications, buoyancy characteristics, and dimensional accuracy. Follow factory procedures for float level adjustment and verification.

Compatibility:

Designed for specific MerCruiser carburetor applications. Verify part number compatibility with your engine model and serial number before ordering. Consult factory service manuals or authorized dealers for application-specific fitment information, float level specifications, and adjustment procedures.

Shipping: Ships same or next day for fast Canada wide shipping.