Carburetor Kit for Mercury Mariner 6HP, 8HP & 9.8HP 2-Stroke — Replaces 3B2-03200
Carburetor Kit for Mercury Mariner 6HP, 8HP & 9.8HP 2-Stroke — Replaces 3B2-03200 is backordered and will ship as soon as it is back in stock.
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Carburetor Kit for Mercury Mariner 6HP, 8HP & 9.8HP 2-Stroke — ...
Carburetor Kit for Mercury Mariner 6HP, 8HP & 9.8HP 2-Stroke — Replaces 3B2-03200 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket carburetor kit is designed for selected Mercury and Mariner 6HP, 8HP, and 9.8HP two-stroke outboard applications. It is intended to restore proper fuel metering and air-fuel delivery when the original carburetor is worn, damaged, contaminated, or no longer responds to cleaning and adjustment.
The primary reference is 3B2-03200. Additional catalog and interchange references associated with this carburetor application include 3303-803687A04, 3303-803687A3, 3303-803687A2, 3303-803687T04, 3303-803687T03, and 3303-803687T02. Reference numbers alone do not confirm fitment; compare the number, engine model, and serial-number range before ordering.
- Aftermarket carburetor kit for selected Mercury and Mariner two-stroke outboards
- Designed as a replacement for the listed carburetor references
- Includes a paper gasket identified as 27-16327
- Verify linkage arrangement, mounting details, and engine serial range before installation
Part Number Matrix
These are customer-facing manufacturer, OEM, or interchange references associated with this product record. They should be used together with the engine and serial-number information below.
| Reference Type | Part Number | Application Note |
|---|---|---|
| Primary reference | 3B2-03200 | Primary carburetor reference for this product record |
| Alternate reference | 3303-803687A04 | Use with engine and serial-number verification |
| Alternate reference | 3303-803687A3 | Use with engine and serial-number verification |
| Alternate reference | 3303-803687A2 | Use with engine and serial-number verification |
| Catalog reference | 3303-803687T04 | Confirm the exact engine catalog configuration |
| Catalog reference | 3303-803687T03 | Listed for selected 6HP, 8HP, and 9.8HP applications |
| Catalog reference | 3303-803687T02 | Listed for later selected serial-number ranges |
Engine & Model Compatibility
Compatibility depends on the complete engine configuration. Keep the horsepower, two-stroke designation, model description, and serial-number range together when checking fitment.
| Brand | Model / Application | Rated HP | Stroke | Serial Number Condition | Catalog Reference |
|---|---|---|---|---|---|
| Mercury / Mariner | 6, 2-cylinder, international | 6HP | 2-Stroke | 0N027903 through 0N055109 | 3303-803687T03 |
| Mercury / Mariner | 8, 2-cylinder, international | 8HP | 2-Stroke | 0N027903 through 0N055109 | 3303-803687T03 |
| Mercury / Mariner | 8 SeaPro, 2-cylinder, international | 8HP | 2-Stroke configuration shown in catalog | 0N014717 through 0N055109 | 3303-803687T03 |
| Mercury / Mariner | 9.8, 2-cylinder, international | 9.8HP | 2-Stroke configuration shown in catalog | 0N007788 through 0N055109 | 3303-803687T03 |
| Mercury / Mariner | 6, 2-cylinder, international | 6HP | 2-Stroke configuration shown in catalog | 0N055110 and up | 3303-803687T02 |
| Mercury / Mariner | 8 SeaPro, 2-cylinder, international | 8HP | 2-Stroke configuration shown in catalog | 0N055110 and up | 3303-803687T02 |
| Mercury / Mariner | 9.8 SeaPro, 2-cylinder, international | 9.8HP | 2-Stroke configuration shown in catalog | 0N055110 and up | 3303-803687T02 |
Technical Specs
- Product Type
- Aftermarket carburetor kit
- Primary Reference
- 3B2-03200
- Alternate References
- 3303-803687A04, 3303-803687A3, 3303-803687A2
- Catalog References
- 3303-803687T04, 3303-803687T03, 3303-803687T02
- Engine Type
- Two-stroke outboard
- Compatible Brands
- Mercury and Mariner
- Listed Horsepower
- 6HP, 8HP, and 9.8HP
- Serial Verification
- Required; see the application table for cataloged serial-number ranges
What's in the Box
- Carburetor kit (1 kit)
- Paper gasket identified as 27-16327
Before installation, compare the supplied parts with the original carburetor and confirm that the mounting, linkage, fuel connection, and gasket arrangement match your engine.
Installation Notes
- Disconnect the fuel line, remove the engine cowling, and allow residual fuel to drain safely.
- Disconnect the throttle and choke linkages, noting their original positions and routing.
- Remove the fuel line and unbolt the original carburetor from the intake assembly.
- Remove the old gasket and clean the mating surfaces with a suitable non-abrasive cleaner.
- Position the supplied paper gasket, identified as 27-16327, only after confirming that its shape and openings match the original installation.
- Install the replacement carburetor and tighten the fasteners evenly to the engine manufacturer's specification.
- Reconnect the throttle and choke linkages and verify smooth movement through their full range.
- Reconnect the fuel line and inspect all connections for leakage before starting the engine.
- Start the engine in a safe, well-ventilated area and follow the service manual for warm-up, idle, and mixture adjustments.
Troubleshooting & FAQ
How do I know if my carburetor needs replacement?
Common symptoms include hard starting, rough or unstable idle, poor throttle response, inconsistent power, excessive fuel consumption, or black exhaust smoke. Confirm fuel quality, ignition, compression, and basic adjustment before replacing the carburetor. If cleaning and adjustment do not restore proper operation, replacement may be appropriate.
Will this fit every Mercury or Mariner 6HP, 8HP, or 9.8HP engine?
No. The listed horsepower is not sufficient by itself to confirm fitment. Match the engine model, two-stroke configuration, serial-number range, carburetor shape, linkage arrangement, and reference number. The cataloged applications in this listing include different serial-number groups for 3303-803687T03 and 3303-803687T02.
Is the gasket included?
Yes. This listing is for a carburetor kit and includes the paper gasket identified as 27-16327. Compare the supplied gasket with the original before installation.
Can I use ethanol-blended fuel?
Follow the fuel requirements in your engine's owner's or service manual. Use fresh fuel from a clean, suitable container, avoid contaminated fuel, and stabilize the fuel if the engine will be stored. Do not assume that a fuel formulation is suitable solely because the carburetor is a replacement part.
What adjustments are needed after installation?
After installation, inspect for fuel leaks and confirm that the throttle and choke operate correctly. Warm-up and idle adjustments must follow the engine manufacturer's service procedure and specifications. Do not change adjustment settings without confirming the correct procedure for your engine.
How often should a carburetor be replaced?
There is no universal replacement interval. Replace the carburetor when cleaning, inspection, and correct adjustment no longer restore operation, or when corrosion, damage, or worn passages prevent reliable performance.
Is this an OEM carburetor?
No. This listing is for an aftermarket replacement kit. The numbers shown are manufacturer, OEM, or interchange references used for application identification; they do not indicate that the replacement is manufactured by Mercury or Mariner.
What should I verify before ordering?
Confirm the exact engine brand, model description, horsepower, two-stroke configuration, serial number, original carburetor reference, mounting pattern, linkage layout, and gasket shape. If any of these details differ, do not rely on horsepower alone to determine compatibility.
Safety & Important Info
- Work in a well-ventilated area away from flames, sparks, and other ignition sources.
- Disconnect the fuel supply before removal and safely contain any drained fuel.
- Verify the engine model, serial number, reference number, and physical configuration before purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended when fuel-system service or adjustment procedures are unfamiliar.
About Sea Sierra
- We supply aftermarket marine replacement parts for repair and maintenance applications.
- Product references and application information are provided to help customers compare parts before ordering.
- For the best fit, use the complete engine model and serial number rather than horsepower alone.
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