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Yamaha | 20 Hour Service Kit | QBL-10W30-FS-12

Make early maintenance easier with a Yamaha F50 20 hour service kit designed for 1995–1999 models. This kit brings together the core items needed for engine oil service and lower unit maintenance, including Yamalube 10W-30 Full Synthetic FC-W engine oil, a Yamaha oil filter, fresh sealing gaskets, gear lube, and a multi-purpose pump for a cleaner refill process. A Yamaha primary fuel filter element is also included to help support clean, consistent fuel delivery.

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What’s Included in This Kit

• 3x QBL-10W30-FS-12 – Yamalube 10W-30 Full Synthetic Outboard Mineral 4M FC-W Engine Oil (Quart)
• 1x 3FV-13440-03-00 – Yamaha Outboard Oil Filter (also replaces 5GH-13440-60-00 and 5GH-13440-50-00)
• 1x 90430-14M09-00 – Yamaha Oil Plug Drain Gasket
• 1x ACC-GEARL-UB-QT – Yamalube Marine Gear Case Lube Oil (32 oz.)
• 2x 90430-08003-00 – Yamaha Outboard Lower Unit Drain Gaskets (also replaces 90430-08020-00)
• 1x Lower Unit Gear Case Oil Quart Pump (Multi-Purpose)
• 1x 61N-24563-10-00 – Yamaha Primary Fuel Filter Element

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Why This 20 Hour Service Kit Matters

• First-service essentials bundled together: Helps keep the main oil change and lower unit service items organized in one kit.
• New sealing gaskets included: Fresh drain and lower unit gaskets help support proper sealing after service.
• Easier gearcase service: The included quart pump helps make bottom-up lower unit refills cleaner and more controlled.
• Fuel system support: A fresh primary fuel filter element helps reduce debris before it reaches important fuel components.

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FAQ

Why are there 2 lower unit drain gaskets included?
Most Yamaha lower units use one gasket at the drain screw and one at the vent screw, allowing both sealing points to be replaced during service.

Can I reuse the quart pump?
Yes. Clean the pump after use and store it with your service supplies for future lower unit maintenance.

Do I need to replace the oil drain gasket?
Replacing the oil drain gasket during service helps maintain a clean seal after the drain plug is reinstalled.

Is one quart of gear lube enough for my lower unit?
Many small and midrange outboards use about one quart during lower unit service, but you should always confirm the required gearcase capacity before servicing.