Carburetor – Fits Yamaha 40HP 2-Stroke E40XMH (Replaces 66T-14301-60, 66T-14301-00, 66T-14301-70)

Product Details

This aftermarket Carburetor – Fits Yamaha 40HP 2-Stroke E40XMH is engineered for direct replacement on Yamaha 40HP two-stroke outboard engines, specifically the E40XMH model (1992–2006). Designed to restore proper fuel delivery and idle performance, it ensures reliable operation for older-series Yamaha outboards and compatible Parsun 40HP X model motors.

Directly replaces OEM part numbers 66T-14301-60, 66T-14301-00, and 66T-14301-70, offering full cross-compatibility with Sierra equivalents.

• Drop-in replacement for Yamaha 40HP 2-stroke E40XMH engines
• Compatible with marine fuel blends used in recreational and light commercial applications
• Includes complete carburetor assembly ready for installation

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Part Type

Carburetor

Horsepower

40HP

Stroke Type

2-Stroke

Engine Model

E40XMH (Old Series)

Model Years

1992–2006

OEM Part Number

66T-14301-60

Application

Yamaha outboard engines, Parsun 40HP X model

What's in the Box

• 1 × Carburetor (complete assembly as shown)

Installation Notes

1. Disconnect the fuel line and remove the engine cowling to access the existing carburetor.
2. Label or photograph all linkage connections, vacuum lines, and throttle cables before removal.
3. Unbolt the old carburetor from the intake manifold and carefully disconnect all attached components.
4. Inspect the intake manifold gasket surface for debris or corrosion; clean thoroughly before fitting the new unit.
5. Position the replacement carburetor onto the manifold studs and secure with factory torque specifications.
6. Reconnect throttle linkage, choke cable, and all vacuum or vent hoses in their original positions.
7. Attach the fuel line and check for leaks before reinstalling the cowling.
8. Prime the fuel system, start the engine, and allow it to reach operating temperature.
9. Adjust idle speed and mixture screws per service manual specifications for optimal performance.

Troubleshooting & FAQ

Will this carburetor fit my Yamaha 40HP 4-stroke engine?

No. This unit is designed exclusively for 2-stroke Yamaha 40HP engines, model E40XMH (1992–2006). It is not compatible with 4-stroke models.

What are common signs that my carburetor needs replacement?

Rough idle, difficulty starting, excessive fuel consumption, black smoke from the exhaust, or inconsistent throttle response often indicate carburetor wear or internal clogging.

Does this come with mounting gaskets or hardware?

The package includes the carburetor assembly as shown. Mounting gaskets and hardware are not typically included; reuse existing hardware or order separately if needed.

Can I use this on a Parsun 40HP engine?

Yes. This carburetor is compatible with Parsun 40HP X model copy motors that use the same carburetor design as the Yamaha E40XMH.

How often should I replace or service the carburetor?

Replacement intervals vary by usage and fuel quality. Inspect annually and replace if you notice performance degradation, fuel leaks, or internal corrosion that cannot be cleaned.

Do I need special tools to install this carburetor?

Standard hand tools (socket set, screwdrivers, pliers) are sufficient. A service manual for your engine model is recommended for torque specs and adjustment procedures.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

• Verify images/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended for safety and performance.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
• Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.