100 hour Maintenance Service Kit - 75-115 HP Four Stroke - 8M0097856

The Mercury 100-Hour Maintenance Service Kit (Part Number: 8M0097856) is designed for 75-115 HP four-stroke outboard engines. This kit includes all essential components needed for a comprehensive 100-hour service, ensuring your engine remains in peak condition. Regular maintenance using this kit will help extend the life of your outboard motor and maintain optimal performance.

Kit Contents and Usage Instructions:

Oil Filter: This high-quality oil filter is designed to remove contaminants from the engine oil, protecting the engine from wear and tear. To use, remove the old oil filter, lubricate the gasket on the new filter with a small amount of new oil, and install the new filter by hand until snug, then tighten an additional three-quarters of a turn.

Fuel Filter: This durable fuel filter ensures clean fuel delivery to the engine, preventing blockages and maintaining optimal performance. Remove the old fuel filter, and install the new one, ensuring correct orientation as indicated by the arrows on the filter. The kit also includes a water separating fuel filter; replace the old one with the new filter provided.

Spark Plugs: High-performance spark plugs are included to ensure efficient combustion and smooth engine operation. Remove the old spark plugs using a spark plug socket, check the gap on the new spark plugs, adjust if necessary, and install by hand to avoid cross-threading, then tighten with a torque wrench to the specified setting.

Gearcase Lubricant: This premium lubricant reduces friction and wear in the gearcase, enhancing durability and performance. Drain the old lubricant by removing the drain and vent plugs. Use a lubricant pump to fill from the bottom until it overflows from the vent hole. Replace and tighten the vent and drain plugs.

Engine Oil: High-quality engine oil is provided to lubricate engine components, reduce friction, and prevent overheating. Drain the old oil, refill with the specified type and quantity of new oil using a funnel, and replace the oil cap, cleaning up any spills.

Impeller Kit: This complete kit includes an impeller, gaskets, and seals to ensure efficient cooling system operation and prevent engine overheating. Remove the bolts securing the lower unit to access the water pump. Replace the old impeller, gaskets, and seals with new components from the kit, reassemble the water pump housing, and reattach the lower unit.

Thermostat: A precise thermostat is included to regulate engine temperature, ensuring optimal operating conditions. Remove the old thermostat from its housing, install the new thermostat and gasket, and reassemble and secure the housing.

Anodes: Sacrificial anodes protect the engine from galvanic corrosion, extending the lifespan of metal components. Inspect all anodes and replace any that are more than 50% corroded. Install new anodes, ensuring they are securely fastened.

Oil Drain Plug Gasket: This new gasket for the oil drain plug prevents leaks and ensures a tight seal. Replace the old gasket with the new one during the oil change.

Grease: Marine-grade grease is included to lubricate moving parts, preventing wear and corrosion. Apply grease to all specified fittings and moving parts as per the service manual.

Instructions for Use:

Ensure the engine is off and cool before starting any maintenance. Disconnect the battery to prevent accidental start-ups. Follow the detailed instructions provided for each component, referring to the engine's service manual for specific guidelines and torque specifications. Properly dispose of old oil, filters, and other used materials in accordance with local regulations. After completing the maintenance, reassemble any parts that were removed, reconnect the battery, start the engine, and check for any leaks or abnormalities. Finally, conduct a water test to ensure the engine operates correctly.

By following these instructions and using the high-quality components in the Mercury 100-Hour Maintenance Service Kit, you can maintain your outboard motor in excellent condition, ensuring reliable performance and extending its service life.