Accelerator Pump Repair Kit for Select Mercury 80–125 HP Outboards – Replaces 811287 and 1395-811287
Accelerator Pump Repair Kit for Select Mercury 80–125 HP Outboards – Replaces 811287 and 1395-811287 is backordered and will ship as soon as it is back in stock.
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Accelerator Pump Repair Kit for Select Mercury 80–125 HP Outboards ...
Accelerator Pump Repair Kit for Select Mercury 80–125 HP Outboards – Replaces 811287 and 1395-811287 is backordered and will ship as soon as it is back in stock.
Product Details
This accelerator pump repair kit is intended for select Mercury 80–125 HP outboard applications, including the Mercury 80 Jet and certain four-cylinder 100 HP, 115 HP, and 125 HP models. It is designed to restore the accelerator-pump function in the carburetor when the original diaphragm, seal, or related service components are worn, hardened, cracked, or damaged.
The kit is listed as a replacement for Mercury part numbers 811287 and 1395-811287, with aftermarket cross-reference Sierra 18-97354. Always compare the engine model, serial number, original part, and product images before ordering.
- Designed for service of the carburetor accelerator-pump circuit.
- Replacement rubber and plastic service components for gasoline-fueled marine applications.
- Aftermarket replacement intended for installation in place of the listed reference numbers.
Part Number Matrix
Use the following references when comparing the original component with this replacement kit. Part-number references do not replace model, year, or serial-number verification.
| Brand | Part Number |
|---|---|
| Mercury | 811287 |
| Mercury | 1395-811287 |
| Sierra | 18-97354 |
Engine & Model Compatibility
The compatibility information below reflects the applications associated with the listed replacement references. Confirm the complete engine identification and serial number before installation; model name and horsepower alone are not sufficient to establish fitment.
| Brand | Model | Rated HP | Stroke | Years | Reference Part No. | Additional Conditions |
|---|---|---|---|---|---|---|
| Mercury | 80 Jet | 80 | 4-Stroke | 1988–2004 | 811287 / 1395-811287 | Serial range listed as 0D283222–0G760299 |
| Mercury | 100 | 100 | 4-Stroke | 1988–2004 | 811287 / 1395-811287 | Four-cylinder; serial range listed as 0D283222–0G760299 |
| Mercury | 115 | 115 | 4-Stroke | 1988–2004 | 811287 / 1395-811287 | Four-cylinder; serial range listed as 0D283222–0G760299 |
| Mercury | 125 | 125 | 4-Stroke | 1988–2004 | 811287 / 1395-811287 | Four-cylinder; serial range listed as 0D283222–0G760299 |
Technical Specifications
- Product Type
- Accelerator pump repair kit
- Application
- Carbureted gasoline outboard engines
- Installation
- Replacement service installation
- Material
- Rubber and plastic service components
- Stated Dimensions
- 57.15 × 57.15 × 19.05 mm (2.25 × 2.25 × 0.75 in)
- Stated Weight
- 0.009 kg (0.02 lb)
- Part Status
- Aftermarket replacement; not an original Mercury-manufactured component
What’s in the Box
- 1 × Accelerator pump repair kit
Kit contents are intended for the accelerator-pump repair function and may not include every gasket or seal required for a complete carburetor rebuild. Compare the product images and your original components before purchase.
Installation Notes
- Disconnect the battery and follow the engine manufacturer's fuel-system safety procedures.
- Remove the carburetor assembly while noting the position of all linkages, hoses, and fittings.
- Disassemble the accelerator-pump area on a clean work surface and record the orientation of each component.
- Clean reusable metal components with an appropriate carburetor cleaner and make sure passages are free of debris.
- Install the replacement diaphragm, seals, gaskets, and related components supplied in the kit, ensuring that each part is correctly seated.
- Reassemble and reinstall the carburetor, then reconnect all hoses and linkages.
- Prime the fuel system and inspect carefully for leaks before operating the engine. Verify proper throttle response during a controlled test.
Troubleshooting & FAQ
What are the signs of a failing accelerator pump?
Common symptoms may include hesitation or stumbling during acceleration, poor throttle response, or fuel leakage around the carburetor. A damaged accelerator-pump diaphragm may appear cracked, stiff, swollen, or deformed.
How can I confirm that this kit fits my engine?
Match your engine brand, model, horsepower, stroke, year, and complete serial number with the compatibility information above. Also compare the original part and the listed references 811287, 1395-811287, or Sierra 18-97354. If any detail differs, confirm fitment with a qualified marine technician before ordering.
Does this kit include every gasket for a complete carburetor rebuild?
No complete-carburetor rebuild should be assumed. This product is intended for the accelerator-pump circuit. It may not include a carburetor flange gasket, float-bowl gasket, needle-and-seat assembly, or other components outside that circuit.
When should the accelerator-pump components be replaced?
Inspect them during carburetor service and replace them when they are hardened, cracked, swollen, leaking, or no longer operating correctly. Service life depends on fuel quality, storage conditions, ethanol exposure, and engine use.
Is this an OEM Mercury part?
No. This listing is for an aftermarket replacement kit intended for applications associated with the listed Mercury reference numbers. It is not an original Mercury-manufactured component.
What should I do if the replacement parts do not match my original components?
Do not force or modify a component to make it fit. Stop installation and recheck the engine identification, serial number, original part number, and kit contents before use.
Safety & Important Information
- Verify fitment using the complete engine model and serial number before purchase.
- Compare the product images and original components before installation.
- Work in a well-ventilated area away from ignition sources when servicing fuel-system components.
- Use new fuel-system parts only when they are correctly matched and properly installed.
- Professional installation is recommended if you are not experienced with outboard carburetor service.
About Sea Sierra
- Marine Replacement Parts — Replacement components for common marine service and repair applications.
- Application-Focused Support — Confirm model, year, serial number, and original part details before installation.
- Direct-Value Parts — Practical aftermarket solutions for routine marine maintenance and repair.
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