3V1-87500-0 Service Kit for Tohatsu MFS6BZ MFS8B MFS9.8B | JLM Marine

Service Kit for Tohatsu MFS6BZ MFS8B MFS9.8B – OEM 3V1-87500-0

This comprehensive service kit is designed to fit Tohatsu MFS6BZ, MFS8B, and MFS9.8B outboard engines. It consolidates essential maintenance components into one convenient package, ensuring your engine receives the complete service it needs for reliable operation and extended lifespan.

This kit directly replaces OEM part number 3V1-87500-0, providing all the critical parts required for routine maintenance intervals. Each component meets OEM specifications for proper fit and performance.

• Includes water pump repair kit, fuel filter, drain gaskets, and gear oil pump
• Consolidates multiple service parts into one complete package
• Designed for straightforward installation during scheduled maintenance

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.

Technical Specifications

Package Contents

This service kit includes the following components:

• Water Pump Repair Kit – Part No. 3B2-87322-0 × 1
• Fuel Filter – Part No. 369-02230-0 View Part → × 1
• Drain Gasket – Part No. 332-60006 × 2
• Gear Oil Pump – Part No. 24OP149 × 1

Installation Guide

1. Ensure the engine is off and cooled down completely before beginning any maintenance work. Gather all necessary tools and have a clean workspace prepared.
2. Start by draining the lower unit gear oil using the drain and vent screws. Replace the drain gaskets with the new ones provided in this kit.
3. Remove the lower unit following your engine's service manual procedures. Access the water pump housing and remove the old water pump components.
4. Install the new water pump repair kit (3B2-87322-0) following the manufacturer's instructions. Ensure all seals and gaskets are properly seated.
5. Replace the fuel filter (369-02230-0) by disconnecting fuel lines carefully to avoid spills. Install the new filter with the arrow pointing toward the engine.
6. Use the new gear oil pump (24OP149) to refill the lower unit with the correct grade and quantity of gear oil. Pump oil into the lower drain hole until it flows from the upper vent hole.
7. Install both drain screws with the new drain gaskets, tightening to the specified torque. Reinstall the lower unit to the engine.
8. Reconnect all fuel lines securely and check for leaks. Start the engine briefly and inspect the cooling water discharge to confirm proper water pump operation.
9. Run the engine at idle for several minutes and check for any fuel leaks, unusual sounds, or overheating. Shut down and perform a final visual inspection.

Troubleshooting & FAQ

Q: How do I confirm this service kit fits my Tohatsu engine?
A: Verify that your engine model matches MFS6BZ, MFS8B, or MFS9.8B. Cross-reference your existing OEM part number 3V1-87500-0 with the part numbers listed in this kit to ensure compatibility.

Q: How often should I replace the components in this service kit?
A: Follow your engine manufacturer's recommended maintenance intervals, typically every 100 hours of operation or annually, whichever comes first. The water pump and fuel filter are critical components that should be replaced regularly to prevent overheating and fuel system issues.

Q: What are the signs that my water pump or fuel filter needs replacement?
A: Signs of a failing water pump include reduced or no water discharge from the cooling outlet, engine overheating, or steam from the powerhead. A clogged fuel filter will cause rough idle, loss of power, or difficulty starting the engine.

Q: Can I install this service kit myself or do I need professional help?
A: If you have mechanical experience and follow the service manual carefully, you can perform this maintenance yourself. However, improper installation—especially of the water pump—can lead to engine damage, so professional installation is recommended if you're uncertain.

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.