5001594 Service Kit for Johnson/Evinrude 120HP 125HP 140HP | JLM Marine

5001594 Service Kit for Johnson/Evinrude 120HP 125HP 140HP

This comprehensive service kit is specifically designed for Johnson/Evinrude outboard engines ranging from 120HP to 140HP manufactured between 1985 and 1993. It provides all essential maintenance components needed for routine servicing, including water pump repair components, thermostats, filters, anodes, and lubrication accessories.

Engineered as a direct replacement for OEM part number 5001594, this aftermarket service kit delivers reliable performance and comprehensive coverage for your engine's critical systems. It consolidates multiple service components into one convenient package, streamlining your maintenance routine.

• Complete service solution with 7 essential components for comprehensive maintenance
• Includes water pump repair kit, dual thermostats, fuel filter, anodes, and gear oil pump
• Designed for straightforward installation following standard service procedures

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 service kit includes the following components:

• 435929 / 5001595 Water Pump Repair Kit × 1
• 434137 Thermostat × 2
• 398319 Fuel Filter × 1
• 436745 Anode × 1
• 433580 Anode × 1
• 311598 Drain Screw Gasket × 2
• 24OP149 Gear Oil Pump × 1

Note: This kit provides all essential service components for a complete maintenance procedure. Verify each component against your service manual before installation.

Installation Guide

1. Preparation: Gather all necessary tools, consult your engine service manual, and ensure the engine is off and cool before beginning work.
2. Water Pump Service: Remove the lower unit according to manufacturer specifications. Disassemble the water pump housing and replace all components from the water pump repair kit (435929/5001595).
3. Thermostat Replacement: Locate the thermostat housing on the cylinder head. Remove the old thermostats and install the two new 434137 thermostats with fresh gaskets.
4. Fuel Filter Installation: Disconnect fuel lines and remove the old fuel filter. Install the new 398319 fuel filter, ensuring proper flow direction and secure connections.
5. Anode Replacement: Remove corrosion from mounting surfaces. Install the 436745 and 433580 anodes in their designated locations on the engine and lower unit.
6. Drain Screw Service: When servicing the lower unit gear oil, replace both 311598 drain screw gaskets to prevent leaks.
7. Gear Oil Pump: Use the 24OP149 gear oil pump to properly refill the lower unit with the manufacturer-recommended gear lubricant.
8. Reassembly: Reinstall the lower unit, torquing all fasteners to specification. Reconnect fuel lines and verify all connections are secure.
9. System Check: Start the engine and check for proper water flow from the cooling system indicator. Inspect all service points for leaks.
10. Test Run: Conduct a brief test run at idle and verify normal operating temperature and smooth operation.

Troubleshooting & FAQ

Q: How do I know if this service kit fits my specific Johnson/Evinrude engine?
A: Check the compatibility table above for your engine's horsepower and year range. This kit fits 120HP (1985-1993 S suffix), 125HP (1989-1992), and 140HP (1985-1993 S suffix) models. If your engine falls within these specifications, the kit is compatible.

Q: How often should I perform a complete service using this kit?
A: Most manufacturers recommend annual service or every 100 hours of operation, whichever comes first. Water pump components, thermostats, and anodes should be inspected regularly and replaced when worn or corroded.

Q: What are the signs that my engine needs the components in this service kit?
A: Common symptoms include overheating, reduced water flow from the cooling indicator, poor fuel delivery, rough idling, or corrosion on metal surfaces. Regular preventive maintenance with this kit helps avoid these issues.

Q: Can I install individual components separately, or must I use the entire kit at once?
A: While you can replace components individually as needed, performing a complete service ensures all wear items are refreshed together. This approach maximizes reliability and simplifies future maintenance scheduling.

Q: What's the difference between this aftermarket kit and the OEM version?
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.