Mercury – Carburetor Float | Precision Fuel System Component | Marine Composite | 91691

Overview

Every boater knows that smooth running starts with clean, steady fuel delivery. When you’re working with a smaller 2-stroke outboard—something in that 10 to 20 horsepower range—you rely on it for everything from pushing you out to the morning fishing grounds to easing you back through a no-wake zone at sunset. The Quicksilver 91691 Carburetor Float might not look like much at first glance, but its job is one you feel every time the engine fires cleanly and holds a steady idle. It’s one of those parts you replace with intention: because you want your outboard to behave the way it should, without fuss, hesitation, or fuel issues that steal the joy from a day on the water.

Key Features

• Designed for select 10–20 horsepower Mercury and Mariner 2-stroke outboards
• Manufactured to Mercury Marine OEM specifications for exact fit and proper fuel level control
• Helps regulate consistent fuel flow within the carburetor bowl
• Built from durable, marine-grade composite materials
• Float only — installation hardware sold separately

Engine & Boat Compatibility

• Compatible with select 10hp–20hp Mercury and Mariner 2-stroke outboards
• Ideal for:
  • Lightweight aluminum fishing boats
  • Dinghies and tenders
  • Jon boats and skiffs
  • Small utility boats and inflatables
• Works with outboards commonly used for trolling, exploring shallow waters, or powering small family runabouts

Performance & Practical Benefits

A worn or waterlogged carburetor float can turn a good engine into a moody one. Replacing it with the Quicksilver 91691 gives you back the dependability you expect:

• Smooth, predictable idle without starving or flooding the carburetor
• Steady acceleration as you transition from idle to wide-open throttle
• A tight, confident internal fit that restores correct fuel height
• Better overall fuel efficiency and throttle response
• Reduced risk of hard starting, bogging, or stalling during low-speed maneuvers

It’s the kind of small but essential part that keeps your outboard feeling sharp, responsive, and trustworthy—especially when slow troll control or tight docking requires a steady hand and a steady engine.

Why Buy OEM

Choosing a genuine Quicksilver carburetor float isn’t just about matching part numbers. It’s about reliability built from decades of real-world marine testing.

• Exact fitment ensures proper fuel height and carburetor performance
• Designed to withstand ethanol-blended fuels and the moisture-rich marine environment
• Helps protect your outboard from fuel flooding or lean conditions
• Supports long-term engine health by maintaining stable fuel delivery
• Saves time and frustration by avoiding the guesswork of aftermarket parts

It’s simply the smart, seasoned-boater choice—fix it once, fix it right.

FAQ

Q1: Which engines does the Quicksilver 91691 fit?

It fits select Mercury and Mariner 10–20hp 2-stroke outboards; check your manual for exact model compatibility.

Q2: What makes this different from aftermarket floats?

It’s built to true Mercury Marine OEM standards, ensuring proper buoyancy, fitment, and fuel control.

Q3: How do I confirm this is the correct replacement?

Match your engine model and serial number to your service manual’s parts list.

Q4: Can it be used in both saltwater and freshwater?

Yes—the float’s composite materials hold up well in both environments.

Q5: Is installation straightforward?

Most owners comfortable with basic carburetor service can replace the float with common tools.