Part for Mercury Mariner | JLM Marine

Carburetor Assembly – Fits Mercury Mariner 2-Stroke 70–90 HP (1987–1989)

This carburetor assembly is engineered for Mercury Mariner 2-stroke outboard motors from 1987 to 1989, covering 70 HP, 75 HP, 80 HP, and 90 HP models. Designed to deliver reliable fuel delivery and consistent engine performance, this replacement carburetor ensures your outboard runs smoothly in a variety of marine conditions.

This aftermarket carburetor is a direct replacement for OEM part number 27-151724, providing a cost-effective solution without compromising on quality or fitment.

• Complete carburetor assembly with gasket included
• Compatible with Mercury Mariner 2-stroke outboards (70–90 HP)
• Direct bolt-on installation for 1987–1989 model years

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• Carburetor (with gasket)

Installation Guide

1. Disconnect the fuel line from the existing carburetor and ensure the engine is off and cool.
2. Remove the air intake cover and any linkages attached to the old carburetor. Take photos or label connections for reference.
3. Unbolt the old carburetor from the intake manifold using the appropriate socket or wrench.
4. Clean the mounting surface on the intake manifold to remove old gasket material and debris.
5. Position the new gasket (included) onto the intake manifold, ensuring all bolt holes align properly.
6. Install the new carburetor onto the manifold, aligning it with the gasket and bolt holes.
7. Hand-tighten the mounting bolts first, then torque them evenly in a cross pattern to manufacturer specifications.
8. Reconnect all linkages, throttle cables, and choke mechanisms as per your reference photos or manual.
9. Attach the fuel line securely to the carburetor inlet and check for proper seating.
10. Reinstall the air intake cover and any protective housings removed during disassembly.
11. Prime the fuel system by squeezing the primer bulb until firm, then start the engine and check for leaks.
12. Adjust idle and mixture settings if necessary, following your engine's service manual for optimal performance.

Troubleshooting & FAQ

Q: How do I confirm this carburetor fits my Mercury Mariner engine?
A: Verify that your engine is a Mercury Mariner 2-stroke model from 1987–1989 with a rated horsepower of 70, 75, 80, or 90 HP. Cross-reference your original carburetor's part number with OEM number 27-151724.

Q: What are the signs that my carburetor needs replacement?
A: Common symptoms include rough idling, difficulty starting, poor acceleration, excessive fuel consumption, black smoke from the exhaust, or fuel leaking from the carburetor body.

Q: Is this an OEM or aftermarket part?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials.

Important Notes

• Verify that the product images and specifications match your original part.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.