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Yamaha | 20 Hour Service Kit | LUB-10W30-FC-12

Keep routine maintenance straightforward with a Yamaha F25B 20 hour service kit for 2012–2018 models built around Yamalube 10W-30 FC-W. This kit combines the key items needed for an oil change and lower unit service in one order—engine oil, a matching Yamaha oil filter, fresh gaskets, and gear lube—plus a quart pump to help make the gearcase refill cleaner and easier. A primary fuel filter element is also included to support consistent fuel flow by reducing contaminants.

What’s Included in This Kit

• 2x LUB-10W30-FC-12 – Yamalube 10W-30 Outboard Mineral 4M FC-W Engine Oil (Quart)
• 1x ACC-GEARL-UB-QT – Yamalube Marine Gear Case Lube Oil (32 oz.)
• 1x 5GH-13440-90-00 – Yamaha Outboard Oil Filter
• 1x 90430-14M09-00 – Yamaha Oil Plug Drain Gasket
• 2x 90430-08003-00 – Yamaha Outboard Lower Unit Drain Gaskets
• 1x ACC-PUMP0-00-QT – Gear Case Lube Quart Pump (Multi-Purpose)
• 1x 61N-24563-10-00 – Yamaha Primary Fuel Filter Element

Why This 20 Hour Service Kit Matters

• One-kit convenience: Covers common oil and lower unit service needs in a single order.
• Fresh gaskets included: Helps reduce seepage at drain and vent screws after service.
• Cleaner gearcase refill: The included pump supports a bottom-up fill and less mess.
• Fuel filtration included: Helps reduce debris before it reaches fuel system components.

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, so you can replace both during the same service.

Can I reuse the pump?
Yes—clean it after use and store it for future lower unit services.

Do I really need to replace the oil drain gasket?
Replacing it during service helps maintain a proper seal after reinstalling the drain plug.

Is this enough gear lube for my lower unit?
Many small outboards use around one quart for a gearcase service, but always confirm your gearcase capacity before servicing.

• Engine Application
  • F25B - 2012 to 2018