Part for Mercury Mariner 2-Stroke Outboard Motors | JLM Marine

Carburetor for Mercury Mariner 2-Stroke Outboard Motors – Fits 70HP 75HP 80HP 90HP (1987-1989)

This aftermarket carburetor is engineered to fit Mercury Mariner 2-Stroke outboard motors from 1987 to 1989, compatible with 70HP, 75HP, 80HP, and 90HP engines. Designed as a direct replacement for OEM part number 27-151724, this carburetor delivers reliable fuel delivery and performance for your outboard motor.

Manufactured to OEM specifications, this replacement carburetor ensures proper fuel-air mixture for optimal engine performance. It provides a cost-effective solution for restoring your Mercury Mariner outboard to peak operating condition.

• Package includes carburetor with gasket for complete installation
• Direct replacement for Mercury Mariner part number 27-151724
• Fits 1987-1989 Mercury Mariner 2-stroke 70HP-90HP models

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

• 1 × Carburetor with Gasket (Part No. 27-151724)

Installation Guide

1. Disconnect the fuel line from the old carburetor and ensure the engine is cool. Remove the battery cable to prevent accidental starts.
2. Remove the engine cowling to access the carburetor assembly. Take note of all linkage and throttle cable positions before disassembly.
3. Disconnect throttle and choke linkages from the old carburetor. Label connections if necessary to ensure proper reassembly.
4. Unbolt the old carburetor from the intake manifold and carefully remove it. Clean the mounting surface thoroughly, removing all old gasket material.
5. Install the new gasket on the intake manifold surface, ensuring proper alignment with all mounting holes.
6. Position the new carburetor onto the gasket and align with mounting bolts. Hand-tighten bolts first, then torque evenly in a cross pattern to manufacturer specifications.
7. Reconnect throttle and choke linkages to the new carburetor, ensuring smooth operation and proper cable routing.
8. Attach the fuel line securely to the carburetor inlet, checking that all clamps are tight.
9. Reconnect the battery cable and prime the fuel system by squeezing the primer bulb until firm.
10. Replace the engine cowling and start the engine. Allow it to warm up to operating temperature.
11. Check for fuel leaks around all connections and adjust idle speed if necessary. Verify smooth throttle response throughout the RPM range.
12. Test run the engine under load to ensure proper performance and fuel delivery at all speeds.

Troubleshooting & FAQ

Q: How do I confirm this carburetor fits my Mercury Mariner outboard?
A: Verify that your engine is a Mercury Mariner 2-stroke model from 1987-1989 rated at 70HP, 75HP, 80HP, or 90HP. Cross-reference your original carburetor part number with OEM 27-151724 using the Mercury parts diagrams linked above.

Q: What are the signs that my carburetor needs replacement?
A: Common symptoms include rough idling, difficulty starting, poor throttle response, excessive fuel consumption, black smoke from exhaust, or fuel leaking from the carburetor body. If cleaning and adjustment don't resolve these issues, replacement is recommended.

Q: Do I need to adjust the carburetor after installation?
A: The carburetor comes pre-set to factory specifications, but minor idle and mixture adjustments may be needed based on your specific operating conditions. Refer to your engine's service manual for proper adjustment procedures and settings.

Q: How often should I replace my outboard carburetor?
A: Carburetors don't have a fixed replacement interval; replace when cleaning and rebuilding no longer restore proper function. Regular maintenance, fuel stabilizer use, and proper winterization can extend carburetor life significantly.

Q: Is this an OEM or aftermarket carburetor?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.