8M0097858 Maintenance Kit for Mercury Verado | JLM Marine

8M0097858 Maintenance Kit for Mercury Verado

This comprehensive maintenance kit is designed specifically for Mercury Verado 200-300 HP L6 outboard engines with serial numbers 2B144122 and below. It includes all essential components required for routine service intervals, ensuring optimal engine performance and longevity.

This kit directly replaces Mercury OEM part number 8M0097858, consolidating critical maintenance items into one convenient package for simplified servicing.

• Complete service kit including oil filter, fuel filter, drain gaskets, and gear oil pump
• Engineered for Mercury Verado L6 200-300 HP outboard 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:

• 877769K01 (Oil Filter) × 1 View Part →
• 8M0122423 (Fuel Filter) × 1 View Part →
• 888593.0 (Oil Plug Drain Gasket) × 1
• 830749.0 (Lower Unit Drain Gasket) × 2
• 24OP149 (Gear Oil Pump) × 1
• 888593 (Oil Plug Drain Gasket) × 1
• 830749 (Lower Unit Drain Gasket) × 2

Note: Verify all part numbers against your engine's service manual before installation.

Installation Guide

1. Preparation: Ensure the engine is off and cool. Gather all tools including a drain pan, torque wrench, and the included gear oil pump.
2. Engine Oil Change: Remove the old oil filter using a filter wrench and install the new 877769K01 oil filter, hand-tightening plus 3/4 turn.
3. Oil Drain Plug: Replace the oil plug drain gasket (888593) on the drain plug before reinstalling to prevent leaks.
4. Fuel Filter Replacement: Locate the fuel filter assembly, relieve fuel system pressure, and replace the old filter with the new 8M0122423 fuel filter.
5. Lower Unit Service: Remove both lower unit drain and vent plugs, allowing old gear oil to drain completely into your pan.
6. Lower Unit Gaskets: Install new 830749 lower unit drain gaskets on both drain and vent plugs to ensure proper sealing.
7. Refill Gear Oil: Use the included gear oil pump (24OP149) to inject fresh gear oil through the drain hole until it flows from the vent hole.
8. Plug Installation: Quickly install the vent plug first (with new gasket), then the drain plug to minimize oil loss.
9. Torque Specifications: Tighten all plugs and filters to manufacturer-specified torque values found in your service manual.
10. System Check: Start the engine and let it idle for several minutes, checking for leaks around all service points.
11. Final Inspection: Shut down the engine and perform a final visual inspection of all replaced components and gaskets.
12. Documentation: Record the service date and engine hours in your maintenance log for future reference.

Troubleshooting & FAQ

Q: How do I confirm this maintenance kit fits my Mercury Verado engine?
A: Verify your engine is a Mercury Verado L6 model rated between 200-300 HP with serial number 2B144122 or below. You can locate your serial number on the engine mounting bracket or refer to the Mercury Serial Number Guide linked above.

Q: How often should I perform maintenance with this kit?
A: Mercury recommends following the maintenance schedule in your owner's manual, typically every 100 hours of operation or annually, whichever comes first. More frequent service may be required in harsh operating conditions.

Q: Can I reuse the old drain gaskets instead of the new ones included?
A: No, always replace drain gaskets during service. Reusing old gaskets can lead to leaks and potential contamination of your engine or lower unit oil.

Q: What are the signs that my fuel filter needs replacement?
A: Common symptoms include difficulty starting, rough idling, loss of power under load, or engine stalling. Regular replacement prevents these issues before they occur.

Q: Is this an OEM or aftermarket maintenance kit?
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.