Mercury – Carburetor Repair Kit | MerCarb Series | Precision Components | 9650

Overview

Anyone who’s spent time running an older Mercury outboard knows how much character those engines have—and how much smoother they run when the carburetor is clean, tight, and tuned the way it should be. When the idle gets a little rough or the engine hesitates coming out of the hole, it’s usually the carb asking for attention. The Quicksilver Carburetor Repair Kit 9650 brings back that steady, confident throttle response you remember. There’s something deeply satisfying about bringing an older motor back to life, hearing it settle into a clean idle, and knowing you’re giving it what it needs to keep taking you out on the water season after season.

Key Features

• Complete kit for cleaning and rebuilding MerCarb 2-barrel carburetors
• Includes idle needle, float shaft, inlet valve, nozzle, venture, plugs, gaskets, screw, and springs
• Designed and manufactured to Mercury Marine OEM specifications
• Restores proper fuel delivery for steady, reliable performance
• Built from durable marine-grade materials for long service life

Engine & Boat Compatibility

This carburetor repair kit fits:

• Mercury 45hp outboards (serial No. 0B110789–0B370270)
• Mercury 40hp / 30 Jet outboards (serial No. 0C100861–0C239552)

Commonly found on:

• Aluminum fishing boats
• Lightweight runabouts
• Shallow-water jet setups
• Classic family skiffs

Always verify using your exact model and serial number.

Performance & Practical Benefits

Carburetors are the heart of older two-stroke fuel delivery, and when they drift out of spec, you feel it immediately—hard starting, bogging, poor idle, and sluggish throttle response. Rebuilding with genuine Quicksilver components brings those systems back into alignment.

Once installed, boaters often notice:

• Smooth, steady idle that feels clean instead of choppy
• Tight, responsive throttle with no bogging when you punch it
• More consistent fuel delivery, especially at low speeds
• Reduced fuel waste from improper metering
• A noticeable return of the engine’s original personality and performance

It’s one of the most cost-effective ways to extend the life of a beloved outboard.

Why Buy OEM

Carburetor tuning relies on extremely precise components—tiny passages, exact metering, perfect sealing. OEM kits ensure the specifications match what the engine was designed for.

Here’s why boaters stick with Quicksilver:

• Exact replacement parts matched to Mercury Marine standards
• Reliable materials that hold up to heat, vibration, and ethanol-blended fuels
• No guesswork on fit or performance
• Better long-term protection for classic engines
• Backed by decades of marine engineering and real-world testing

Aftermarket kits may look similar, but the tolerances rarely match true Mercury OEM quality.

FAQ Section

Q1: Which Mercury engines does this kit fit?

It’s designed for select 45hp outboards and 40hp/30 Jet models from the listed serial number ranges.

Q2: What makes this better than aftermarket kits?

OEM accuracy. Every part is built to the same tolerances and materials Mercury uses in original production.

Q3: How do I know if this is the correct kit for my carburetor?

Check your serial number and owner’s manual, or match your carburetor model to the MerCarb 2-barrel design.

Q4: Can I use this on boats that run in saltwater?

Yes—these components are designed for all marine environments.

Q5: Is installation straightforward?

If you're familiar with small-engine carburetors, the rebuild process is simple and uses basic tools.