5000308 Annual Service Kit for Evinrude 40HP 50HP 55HP 60HP 65HP | JLM Marine

Annual Service Kit for Evinrude 40HP 50HP 55HP 60HP 65HP – OEM 5000308

This comprehensive annual service kit is designed for Evinrude outboard engines ranging from 40HP to 65HP, covering model years 2004-2020. It provides all the essential components needed for routine maintenance, ensuring your engine runs reliably season after season.

This kit directly replaces OEM part number 5000308 and includes critical wear items such as the water pump impeller, thermostat, fuel filter, gaskets, seals, and gear oil pump—everything required for a complete annual service in one convenient package.

• Includes 10 essential components: impeller, thermostat, fuel filter, gaskets, seals, wear plate, and gear oil pump
• Fits multiple Evinrude HP ratings from 40HP to 65HP across 16+ years of production
• Simplifies annual maintenance with all necessary parts in one kit

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

This annual service kit includes the following components:

• 396725 396723 (Impeller) x1 – Essential for water pump operation
• 334897 (Impeller Key) x2 – Secures impeller to shaft
• 336530 (Gasket) x1 – Seals water pump housing
• 324981 (Seal) x1 – Prevents water leakage
• 319275 (Wear Plate) x1 – Protects pump housing from impeller wear
• 340619 (Insert Cup) x1 – Water pump component
• 5005440 (Thermostat) x1 – Regulates engine temperature
• 5005266 (Fuel Filter) x1 – Ensures clean fuel supply
• 311598 (Drain Screw Gasket) x2 – Seals lower unit drain plugs
• 24OP149 (Gear Oil Pump) x1 – For lower unit oil changes

Installation Guide

1. Preparation: Gather all tools and components from the kit. Ensure the engine is off and cool before beginning work.
2. Remove Lower Unit: Disconnect the lower unit from the mid-section according to your engine's service manual. Support it securely during removal.
3. Drain Gear Oil: Remove drain and vent plugs from the lower unit. Use the included gear oil pump for refilling later.
4. Disassemble Water Pump: Remove the water pump housing and carefully extract the old impeller, gaskets, seals, and wear plate. Inspect all surfaces for damage.
5. Install New Wear Plate: Position the new wear plate (319275) in the pump housing. Ensure proper alignment.
6. Install Impeller: Lubricate the new impeller (396725 396723) with marine grease. Install impeller keys (334897) and carefully insert the impeller, ensuring vanes face the correct direction.
7. Install Seals and Gaskets: Place the new seal (324981), insert cup (340619), and gasket (336530) in their proper positions. Do not reuse old gaskets.
8. Reassemble Water Pump: Reinstall the water pump housing, tightening bolts to manufacturer's specifications. Check that all components seat properly.
9. Replace Thermostat: Locate the thermostat housing on the cylinder head. Remove the old thermostat and install the new one (5005440) with the correct orientation.
10. Replace Fuel Filter: Disconnect fuel lines and replace the old fuel filter with the new filter (5005266). Ensure connections are secure and leak-free.
11. Refill Gear Oil: Using the included gear oil pump (24OP149) and new drain screw gaskets (311598), refill the lower unit with manufacturer-recommended gear oil until it flows from the vent hole. Reinstall plugs immediately.
12. Reinstall Lower Unit: Reattach the lower unit to the mid-section. Test the engine in a water tank or on the boat to verify proper operation and check for leaks.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my specific Evinrude engine?
A: Check the compatible engine models table above for your HP rating and year. Your engine should fall within 40HP-65HP and model years 2004-2020. You can also verify using your engine's serial number with our Johnson/Evinrude serial number guide linked above.

Q: How often should I perform an annual service with this kit?
A: As the name suggests, this service should be performed annually or every 100 hours of operation, whichever comes first. More frequent service may be needed in harsh saltwater environments or if you notice overheating or performance issues.

Q: What are the signs that my water pump impeller needs replacement?
A: Common symptoms include weak water stream from the tell-tale indicator, engine overheating, steam from the engine, reduced performance, or alarm activation. Never ignore these signs—impeller failure can cause severe engine damage.

Q: Do I need any special tools to install this service kit?
A: Basic hand tools (wrenches, screwdrivers, pliers) are sufficient for most installations. The kit includes a gear oil pump for lower unit service. A torque wrench is recommended for reassembly to manufacturer specifications.

Q: Can I use this kit if my engine has been modified or has aftermarket parts?
A: This kit is designed for stock Evinrude engines within the specified HP and year range. If your engine has modifications, verify compatibility of each component before installation.

Q: Is this an OEM kit or 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.