Carburetor Service Valve Kit – Fits Johnson/Evinrude 9.9HP/15HP (Replaces 175158, 437228)

Carburetor Service Valve Kit – Fits Johnson/Evinrude 9.9HP/15HP (Replaces 175158, 437228)

This carburetor service valve kit is designed for Johnson/Evinrude 9.9HP & 15HP 2-Stroke engines equipped with a primer valve. It provides a convenient way to perform engine maintenance. This kit specifically excludes 1993 models of both 9.9HP and 15HP engines.

It serves as a direct replacement for multiple OEM and aftermarket part numbers, allowing for a straightforward installation. This conversion allows for the injection of engine tuner and fogging oil through the primer valve system.

• Allows for the injection of engine tuner and fogging oil through the primer valve.
• Installation is a direct replacement for the original components.
• The kit includes one service valve with an O-ring and one cover with a gasket assembly.

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 Johnson/Evinrude owners, here’s a guide to help you identify your engine’s serial/model: Johnson/Evinrude Serial Number Guide.

Technical Specifications

Package Contents

• 1 x Service Valve w/ O-ring (Replaces 175158)
• 1 x Cover & Gasket Assembly (Replaces 437228)

Installation Guide

1. Safety First: Ensure the engine is turned off and cool to the touch. Disconnect the battery and engage the kill switch.
2. Locate Primer Valve: Identify the existing primer valve assembly on the carburetor.
3. Remove Old Components: Carefully remove the original primer cover, gasket, and valve. Keep track of any screws or small hardware.
4. Clean Seating Area: Clean the mounting surface on the carburetor to ensure a proper seal with the new gasket.
5. Install New Valve Kit: Place the new gasket, cover, and service valve from the kit into position. Ensure the O-ring on the valve is seated correctly.
6. Secure Assembly: Fasten the new assembly using the original hardware. Tighten screws evenly to avoid warping the cover.
7. Reconnect & Test: Reconnect the primer hose. Before starting the engine, test the manual primer to ensure it functions correctly.
8. Final Check: Once the engine is running, check for any fuel leaks around the new assembly. The service port is now ready for use.

Troubleshooting & FAQ

Q: How do I know if this kit fits my Johnson/Evinrude engine?
A: This kit is designed for 9.9HP and 15HP 2-stroke Johnson/Evinrude engines with a primer valve, but it specifically excludes all 1993 models. Please verify your engine model and year and confirm the OEM part numbers (175158, 437228) match your existing components.

Q: What is the purpose of this service valve?
A: It converts a standard electric primer system into a maintenance port. This allows you to easily inject engine tuner or fogging oil directly through the primer system without disassembly, streamlining regular engine care while keeping the primer's original function intact.

Q: My old Sierra part is 18-7044. Will this kit work?
A: Yes, this kit is a direct replacement for the older Sierra 18-7044, which has been superseded by part number 18-7044-1.

Q: OEM vs. Aftermarket?
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.