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Yamaha | 20 Hour Service Kit | LUB-20W40-FC-04

Keep your first service interval simple with a Yamaha F90 20 hour service kit built around Yamalube 20W-40 FC-W. This kit bundles the core 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

• 1x LUB-20W40-FC-04 – Yamalube 20W-40 Outboard Mineral 4M FC-W Engine Oil (Gallon)
• 1x 5GH-13440-72-00 – Yamaha Outboard Oil Filter (also replaces 5GH-13440-71-00)
• 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 6D8-WS24A-00-00 – 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 for better sealing: Helps reduce seepage at drain and vent screws after service.
• 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 midrange outboards use about one quart for a lower unit service, but always confirm your gearcase capacity before servicing.

• Engine Application
  • F90 - 2006 to Current