3SA-87500-0 Service Kit for Tohatsu MFS9.9 MFS15 MFS20D | JLM Marine

Service Kit for Tohatsu MFS9.9 MFS15 MFS20D – OEM 3SA-87500-0

This comprehensive service kit is designed for Tohatsu MFS9.9, MFS15, and MFS20D outboard engines, providing all essential maintenance components in one convenient package. It ensures your engine receives complete routine service with properly matched filters, gaskets, and gear oil pump for optimal performance and longevity.

This aftermarket kit directly replaces OEM part number 3SA-87500-0, delivering the same specifications and fitment as the original Tohatsu service kit. Each component is manufactured to meet OEM standards, ensuring reliable protection and proper maintenance intervals for your mid-range four-stroke outboard.

• Includes oil filter, fuel filter, drain gaskets, and gear oil pump for complete service
• Fits multiple Tohatsu MFS models from 9.9HP to 20HP
• All components meet OEM specifications for proper fit and function

Part Number Cross-Reference

Use this table to confirm the OEM part number for this service kit:

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

This service kit includes the following components:

• Oil Filter (3BJ-07615-0) – Quantity: 1 View Part →
• Fuel Filter (369-02230-0) – Quantity: 1 View Part →
• Oil Plug Drain Gasket (3R3-07406-0) – Quantity: 1
• Lower Unit Drain Gasket (332-60006-0) – Quantity: 2
• Gear Oil Pump (24OP149) – Quantity: 1

Installation Guide

1. Preparation: Gather necessary tools including socket wrenches, oil drain pan, and shop towels. Ensure the engine is cool and positioned upright on a stable stand.
2. Oil Filter Replacement: Locate the oil filter on the engine block and unscrew the old filter using an oil filter wrench. Apply a thin layer of clean oil to the new filter's gasket and install hand-tight.
3. Engine Oil Drain: Remove the oil drain plug using the appropriate socket, allowing old oil to drain completely into a pan. Replace the old drain gasket (3R3-07406-0) with the new one provided in the kit.
4. Fuel Filter Replacement: Disconnect fuel lines from the old fuel filter, noting the flow direction arrow. Install the new fuel filter (369-02230-0) with the arrow pointing toward the engine and reconnect fuel lines securely.
5. Lower Unit Service: Position the outboard vertically and remove both the drain and vent plugs from the lower unit. Allow old gear oil to drain completely.
6. Gear Oil Refill: Using the provided gear oil pump (24OP149), insert the nozzle into the lower drain hole and pump fresh gear oil until it flows from the upper vent hole. Replace both drain gaskets (332-60006-0) on the drain and vent plugs.
7. Reinstall Plugs: Quickly install the vent plug first (while oil is still flowing), then install the drain plug. Tighten both plugs to manufacturer specifications.
8. Engine Oil Refill: Add the recommended type and quantity of fresh engine oil through the oil fill cap. Check the oil level using the dipstick and adjust as needed.
9. System Check: Reconnect all fuel lines and ensure all drain plugs and filters are properly tightened. Inspect for any leaks around the oil filter, drain plugs, and fuel filter connections.
10. Test Run: Start the engine and allow it to idle for several minutes. Monitor for oil pressure, check for fuel or oil leaks, and verify smooth operation.
11. Final Inspection: After the test run, recheck oil level and top off if necessary. Inspect all service points once more for any seepage or loose connections.
12. Documentation: Record the service date, engine hours, and components replaced in your maintenance log for future reference.

Troubleshooting & FAQ

Q: How do I confirm this service kit fits my specific Tohatsu engine?
A: Verify that your engine model is MFS9.9, MFS15, or MFS20D by checking the model plate on your outboard. Cross-reference the OEM part number 3SA-87500-0 in your engine's service manual or parts diagram to ensure compatibility.

Q: How often should I perform this service on my Tohatsu outboard?
A: Tohatsu recommends performing oil and filter changes every 100 hours of operation or annually, whichever comes first. Lower unit gear oil should be changed at the same interval or more frequently if operating in saltwater or harsh conditions.

Q: Can I use this kit if some components were recently replaced individually?
A: Yes, you can save unused components from this kit for future service intervals. Each part has its own part number and can be used independently when needed for targeted maintenance.

Q: What type of gear oil should I use with the included pump?
A: Use Tohatsu-specified lower unit gear oil or a high-quality marine gear lube rated SAE 90 (API GL-5). The pump included works with standard viscosity lower unit oils for proper filling.

Q: What are signs that my engine needs this service kit?
A: Common indicators include reduced engine performance, difficulty starting, visible oil or fuel leaks, dark or contaminated oil, or milky gear oil (indicating water intrusion). Regular preventive maintenance is always preferred over waiting for symptoms.

Q: Is this an OEM service 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.