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Yamaha | 20 Hour Service Kit | XF425 | 20W-40

Perform your Yamaha XF425 20 hour break-in service with confidence using a complete maintenance kit built around Yamalube 20W-40 FC-W engine oil. Designed for all XF425 models, this kit brings together the critical lubrication, filtration, sealing, and gearcase components required during the first major service interval.

The 20 hour service is essential for high-output offshore engines like the XF425. Replacing engine oil, renewing filtration, refreshing HD gear lube, and installing new sealing components helps support long-term reliability, proper lubrication, and consistent offshore performance. This bundled kit simplifies the process by including the correct oil volume, oil filter, dual fuel filtration, heavy-duty marine gear lube, required O-rings and circlip, plus a gear lube pump for efficient lower unit servicing.

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What’s Included in This Kit

• 2 x LUB-20W40-FC-04 – Yamalube 20W-40 Outboard Mineral 4M FC-W Engine Oil (Gallon)
• 1 x LUB-20W40-FC-12 – Yamalube 20W-40 Outboard Mineral 4M FC-W Engine Oil (Quart)
• 1 x N26-13440-00-00 – Yamaha Oil Filter (also replaces N26-13440-02-00)
• 1 x 6P3-WS24A-02-00 – Yamaha Fuel Filter Element
• 1 x MAR-10MEL-00-00 – Yamaha 10-Micron Fuel/Water Separating Filter (supersedes MAR-FUELF-IL-TR)
• 3 x ACC-GLUBE-HD-QT – Yamalube Marine Gear Case Lube Oil HD (32 oz. each)
• 2 x 93210-09350-00 – Lower Unit Drain Plug O-Rings
• 1 x 93210-19123-00 – Lower Unit Drain Plug O-Ring
• 1 x 93210-34633-00 – Oil Drain O-Ring (2HF)
• 1 x 93420-36M01-00 – Oil Drain Circlip (R-Type)
• 1 x Lower Unit Gear Case Oil Quart Pump (Multi-Purpose)

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Why This Kit Matters

• Correct oil capacity: Two gallons plus one quart match XF425 oil requirements.
• Heavy-duty gear protection: Three quarts of HD marine gear lube support offshore torque loads.
• Complete sealing components: Includes required O-rings and circlip for proper reassembly.
• Dual fuel filtration: Helps reduce water and debris before reaching sensitive engine components.
• All-in-one convenience: Core 20 hour service items organized in a single kit.

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Service Notes

• Designed for all Yamaha XF425 outboard models.
• Replace O-rings and circlip during service to help maintain sealing integrity.
• Use the included pump to simplify gearcase filling.
• Dispose of used oil and gear lube according to local regulations.

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FAQ

Is this the correct first service kit for the XF425?
Yes. This kit includes the primary components typically replaced during the 20 hour break-in service interval.

Why are multiple O-rings included?
The XF425 uses multiple sealing points for oil and drain components. Replacing them during service helps reduce the risk of leaks.

Why is HD gear lube included?
The XF425 is a high-output offshore engine. Heavy-duty marine gear lube supports the loads placed on the gearcase during offshore operation.