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Yamaha | 20 Hour Service Kit | LUB-20W40-FC-12

Keep routine maintenance simple with a Yamaha F50 20 hour service kit for 2000–2004 models built around Yamalube 20W-40 FC-W. This kit bundles the key items you need for an oil change and lower unit service in one order—engine oil, a matching Yamaha oil filter, fresh gaskets, gear lube, and a multi-purpose pump to make the refill cleaner and easier. A primary fuel filter element is also included to help reduce contaminants and support steady fuel flow.

What’s Included in This Kit

• 3x LUB-20W40-FC-12 – Yamalube 20W-40 Outboard Mineral 4M FC-W Engine Oil (Quart)
• 1x ACC-GEARL-UB-QT – Yamalube Marine Gear Case Lube Oil (32 oz.)
• 1x 5GH-13440-71-00 – Yamaha Outboard Oil Filter
• 1x 90430-14M09-00 – Yamaha Oil Plug Drain Gasket
• 2x 90430-08003-00 – Yamaha Outboard Lower Unit Drain Gaskets
• 1x Lower Unit Gear Case Oil Quart Pump (Multi-Purpose)
• 1x 61N-24563-10-00 – Yamaha Primary Fuel Filter Element

Why This 20 Hour Service Kit Matters

• Core service items in one kit: Helps you avoid missed parts when it is time to service.
• Fresh gaskets included: Helps reduce seepage at drain and vent screws after the gear lube change.
• Cleaner lower unit refill: The included pump supports a bottom-up gearcase fill.
• Fuel-side protection: A fresh primary fuel filter element helps reduce debris before it reaches key fuel 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 quart 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?
Most small and midrange outboards use about one quart for a lower unit service, but always confirm your gearcase capacity before servicing.

• Engine Application
  • F50 - 2000 to 2004