8M0097856 Maintenance Kit for Mercury 75HP 90HP 115HP 150HP | JLM Marine

8M0097856 Maintenance Kit for Mercury 75HP 90HP 115HP 150HP | JLM Marine

This comprehensive maintenance kit is engineered for Mercury 75-115 HP (1.7L) and 150 HP EFI outboard engines. It delivers all the essential components needed for routine service intervals, ensuring your engine runs smoothly and reliably season after season.

Designed as a direct replacement for OEM part number 8M0097856, this kit streamlines your maintenance process by bundling critical filters, gaskets, and tools into one convenient package.

• Includes oil filter, fuel filter, drain gaskets, and gear oil pump for complete service coverage
• Fits Mercury 1.7L four-stroke models (75-115 HP) and 150 HP EFI engines
• All components meet OEM specifications for reliable performance

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 Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

This maintenance kit includes the following components:

• 877761K01 (Oil Filter) × 1
• 879885Q (Fuel Filter) × 1
• 828816.0 (Oil Plug Drain Gasket) × 1
• 830749.0 (Lower Unit Drain Gasket) × 2
• 24OP149 (Gear Oil Pump) × 1

Installation Guide

1. Preparation: Warm up the engine for 5 minutes to thin the oil, then shut off and allow to cool slightly. Gather all tools and have a drain pan ready.
2. Drain Engine Oil: Remove the oil drain plug using the appropriate wrench and allow all old oil to drain completely into the pan.
3. Replace Oil Drain Gasket: Discard the old gasket and install a new one from the kit onto the drain plug threads.
4. Reinstall Drain Plug: Thread the drain plug back into the engine and torque to manufacturer specifications.
5. Replace Oil Filter: Remove the old oil filter, apply a light coat of clean oil to the new filter gasket, and hand-tighten the new filter.
6. Replace Fuel Filter: Disconnect fuel lines from the old fuel filter, noting orientation. Install the new filter ensuring proper flow direction.
7. Drain Lower Unit Gear Oil: Remove both the lower unit drain and vent plugs, allowing old gear oil to drain completely.
8. Replace Lower Unit Gaskets: Install new lower unit drain gaskets on both the drain and vent plugs.
9. Refill Lower Unit: Using the included gear oil pump, inject fresh gear oil into the drain hole until it flows from the vent hole.
10. Refill Engine Oil: Pour the manufacturer-recommended amount and grade of fresh engine oil through the fill cap.
11. Check Levels: Start the engine and let it idle for 2-3 minutes. Shut off, wait 5 minutes, then verify oil level and check for leaks.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my Mercury engine?
A: Cross-reference your engine's horsepower and displacement with the compatibility table above. This kit is designed for Mercury 75-115 HP (1.7L) and 150 HP EFI models.

Q: How often should I perform this maintenance service?
A: Mercury recommends oil and filter changes every 100 hours of operation or annually, whichever comes first.

Q: Can I use the included gear oil pump for future services?
A: Yes, the gear oil pump is reusable and can be cleaned and stored for your next lower unit service interval.

Important Notes

• Verify that the product images and specifications match your original part before purchasing.
• 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.