1395-5109-1 Carburetor Rebuild Kit for Mercury Mariner | JLM Marine

Carburetor Rebuild Kit for Mercury Mariner 40-150 HP Inline Engines | OEM 1395-5109-1

This carburetor rebuild kit is designed to restore and maintain optimal fuel delivery on Mercury Mariner inline outboard engines ranging from 40 HP to 150 HP. Engineered to match OEM specifications, it ensures reliable performance across a wide range of inline carburetor models including WMK series configurations used on popular Mariner and Mercury powerheads.

This kit directly replaces OEM part number 1395-5109-1 and cross-references with dozens of legacy Mercury service kits. It provides all essential gaskets, diaphragms, and seals needed for a complete carburetor overhaul, restoring fuel economy and throttle response.

• Complete rebuild kit with gaskets, diaphragms, and seals for thorough carburetor restoration
• Fits multiple Mercury Mariner inline models from 40 HP through 150 HP with WMK-series carburetors
• Direct replacement for OEM 1395-5109-1 with extensive cross-reference compatibility

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

This kit includes 3 complete carburetor repair kits, providing all gaskets, diaphragms, and seals necessary for rebuilding your Mercury Mariner inline carburetors:

• 3× Carburetor Repair Kits (as shown in product images)
• All essential gaskets, diaphragms, and seals for complete carburetor overhaul

Installation Guide

1. Disconnect the fuel line and remove the carburetor assembly from the engine following your service manual. Clean the exterior before disassembly.
2. Carefully disassemble the carburetor, noting the position and orientation of each component. Take photos if needed for reassembly reference.
3. Remove all old gaskets, diaphragms, and seals from the carburetor body and cover plates. Inspect internal passages for debris or corrosion.
4. Clean all metal components with carburetor cleaner and compressed air, ensuring all fuel passages are clear. Do not use wire brushes on delicate surfaces.
5. Install new gaskets and seals from the rebuild kit in the exact positions of the old components. Ensure proper alignment to prevent air leaks.
6. Replace diaphragms with new units from the kit, ensuring they seat correctly in their recesses without wrinkles or folds.
7. Reassemble the carburetor carefully, tightening screws in a cross-pattern to specified torque settings from your service manual.
8. Reinstall the carburetor onto the engine, ensuring all mounting surfaces are clean and gaskets are properly seated.
9. Reconnect the fuel line and check for leaks before starting the engine. Prime the fuel system if necessary.
10. Start the engine and adjust idle mixture and speed according to factory specifications. Allow the engine to warm up fully.
11. Test throttle response at various RPM ranges to ensure smooth operation. Re-check for any fuel leaks around carburetor seams.
12. Perform a final inspection after the first hour of operation, retightening fasteners if needed and verifying no fuel seepage occurs.

Troubleshooting & FAQ

Q: How do I confirm this rebuild kit fits my specific Mercury carburetor?
A: Cross-reference your engine's horsepower and WMK series number with the compatibility table above. You can also verify your engine's serial number using the Mercury Serial Number Guide and check exploded parts diagrams to confirm the OEM part number 1395-5109-1 matches your carburetor.

Q: What are the signs that my carburetor needs to be rebuilt?
A: Common symptoms include hard starting, rough idling, poor acceleration, excessive fuel consumption, fuel leaking from carburetor seams, or the engine stalling at low RPM. If diaphragms have hardened or gaskets are compressed and leaking, a rebuild kit will restore proper fuel metering and sealing.

Q: How often should I rebuild my carburetor?
A: Rebuild frequency depends on usage and fuel quality. For recreational use, inspect carburetor components every 2–3 years or every 200–300 hours of operation. If you notice performance issues or store your engine for extended periods with ethanol fuel, more frequent rebuilds may be necessary.

Q: Can I install this kit without special tools?
A: Most carburetor rebuilds require only basic hand tools like screwdrivers, wrenches, and carburetor cleaner. However, proper disassembly, cleaning, and reassembly technique is critical—consult your engine's service manual for torque specs and adjustment procedures, or have a qualified marine technician perform the work.

Q: Will this kit work on all three carburetors if my engine has multiple carbs?
A: Yes, this package includes three complete repair kits, which is ideal for engines equipped with multiple inline carburetors (common on higher-horsepower Mercury models). Each kit contains all necessary gaskets and diaphragms for one carburetor.

Q: Is this an OEM part or an aftermarket replacement?
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.