Want better insight into how your engine is breaking in or wearing over time? Wondering whether your oil is still protecting the way it should? Looking to catch potential issues before they become bigger problems? PartsVu has partnered with Blackstone Laboratories and now offers professional oil analysis kits. Results are typically delivered by email within a few days. Shop now.

Yamaha | 20 Hour Service Kit | QBL-10W30-FS-04

Make your first service interval easier with a Yamaha F90 20 hour service kit built around Yamalube 10W-30 Full Synthetic FC-W. This kit brings together the main items needed for an oil change and lower unit service, including engine oil, the proper Yamaha oil filter, replacement gaskets, gear lube, and a multi-purpose pump for a cleaner refill. A Yamaha primary fuel filter element is also included to help reduce debris and support consistent fuel flow.

---

What’s Included in This Kit

• 1x QBL-10W30-FS-04 – Yamalube 10W-30 Full Synthetic 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

• Main service items included: Helps keep the common 20 hour maintenance parts together in one convenient kit.
• Fresh gaskets for proper sealing: Replacement gaskets help reduce the chance of seepage at drain and vent points after service.
• Easier lower unit service: The included pump helps support a cleaner bottom-up gearcase fill.
• Fuel system support: A new primary fuel filter element helps capture debris before it reaches important 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, allowing both to be replaced during the same service.

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

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

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