MOTOALL Carburetor Rebuild Kit for Mercury/Mariner 6–25 HP — Gaskets, Needles & O‑Rings

MOTOALL Carb Carburetor Rebuild Kit is a complete replacement kit to restore fuel delivery and sealing on many Mercury/Mariner outboard carburetors from 6 to 25 HP.

This rebuild kit contains the gaskets, O-rings, needles, seats and small parts required to service a variety of small Mercury and Mariner outboard carburetors. It is engineered to replace multiple original equipment (OE) part numbers and aftermarket equivalents so you can repair leaks, restore proper float operation and refresh worn seals without buying a full carburetor. The kit fits common early- and mid-era models across the 6, 8, 9.9, 10, 15, 20 and 25 horsepower ranges.

Which Mercury and Mariner engines will this rebuild kit work with?

This kit is matched to a list of Mercury/Mariner outboards identified by their horsepower and serial start points. Use your engine’s model and serial to confirm fitment; the kit is intended for a wide span of small outboard carbs rather than every single variant.

• Fits 6, 8 and 9.9 HP models starting at serial 0A197112 and later
• Fits 10 HP models at 0D038000 & up
• Fits 15 HP models at 0B292414 & up, and 20/25 HP models at 6443973 & up
• Replaces OE numbers like 1395-9761, 1395-9803 and related part codes

What parts are included to rebuild the carburetor?

The kit supplies the small consumable components that most commonly fail in a carburetor: gaskets that prevent air and fuel leaks, needles and seats that control fuel flow, and O-rings that maintain seal integrity. Having these parts on hand is useful for diagnosing running problems and getting an older carburetor back to serviceable condition.

• Complete gasket set for bowl, body and throttle passages
• Float needle valves and replacement seats to stop fuel leaks
• Assorted O-rings, small springs and mounting seals included
• Parts sized to replace OE#s: 1395-9761, 1395-9803, 1395-9725, etc.

How will installing this kit affect engine performance?

Replacing worn seals and consumables can stop external fuel leaks, reduce flooding, and help the carburetor maintain the correct fuel level and mixture. While this rebuild kit does not change calibration or tuning on its own, restoring correct mechanical operation is often the first step toward reliable starts and steady idling.

• Stops fuel seepage from worn seats and O-rings
• Restores float operation for stable fuel level control
• Improves throttle response by eliminating air/fuel leaks
• Maintains original carburetor calibration when installed properly

What should I check before ordering and during installation?

Confirm the engine’s model number and serial range to ensure compatibility with the listed fitment. During installation inspect the carburetor body for cracks, severely worn bores, or damaged throttle shafts — those issues may require a full carburetor replacement rather than just new seals and needles.

• Verify engine horsepower and serial start numbers against the kit fit list
• Inspect carburetor body for corrosion, cracks, and damaged bores
• Clean carburetor thoroughly and replace only if internal damage is absent
• Follow a service manual for torque, float height and reassembly steps

Who is this for: This MOTOALL rebuild kit is designed for boat owners, marine mechanics and DIY enthusiasts who want to refurbish Mercury or Mariner small outboard carburetors without replacing the entire unit. It’s ideal when the carburetor body is structurally sound but the internal consumables are worn, leaking or causing fuel level problems. Use it when you need an affordable way to restore reliable handling and stop fuel-related issues common on older 6–25 HP outboards.