100-Hour Service Kit – Fits Yamaha F80/F100 4-Stroke Outboards (2003-2016)
100-Hour Service Kit – Fits Yamaha F80/F100 4-Stroke Outboards (2003-2016) is backordered and will ship as soon as it is back in stock.
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100-Hour Service Kit – Fits Yamaha F80/F100 4-Stroke Outboards (200...
Product Details
This comprehensive 100-Hour Service Kit – Fits Yamaha F80/F100 4-Stroke Outboards (2003-2016) contains all the essential filters, gaskets, and spark plugs for scheduled maintenance. It is designed for Yamaha F80B, F100A, and F100B four-stroke outboards manufactured between 2003 and 2016.
While no direct aftermarket kit equivalent has been identified, the individual components included serve as direct replacements for their respective OEM parts.
- Installation can be performed by a DIY enthusiast or a professional marine mechanic.
- Kit is intended for the 100-hour or annual service interval, whichever occurs first.
- Includes essential components like an oil filter, spark plugs, and various gaskets.
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F80AET | 80 | 4-Stroke | 2003–2009 | [Multiple Parts] | |
| Yamaha | F80BET | 80 | 4-Stroke | 2009–2016 | [Multiple Parts] | |
| Yamaha | F100AET | 100 | 4-Stroke | 2003–2008 | [Multiple Parts] | |
| Yamaha | F100BET | 100 | 4-Stroke | 2008–2016 | [Multiple Parts] |
Technical Specs
- Product Type
- 100-Hour Service Maintenance Kit
- Compatible Engines
- Yamaha F80 & F100 4-Stroke Outboards
- Service Interval
- 100 hours or annually (whichever comes first)
- Installation
- DIY or Professional Service
- Engine Oil
- Yamalube 4M FC-W 10W-30 or 10W-40 (4.3 L capacity)
- Oil Filter
- Yamaha OEM style
- Spark Plugs
- NGK LFR5A-11 (4 required)
- Spark Plug Gap
- 1.0–1.1 mm (0.039–0.043 in)
- Gear Oil Type
- Hypoid Gear Oil SAE#90
- Gear Oil Capacity
- 670.0 cm³ (22.65 US oz) for F80A/F100A, 760.0 cm³ (25.70 US oz) for F100B
- Product Height
- 17.0 cm
- Product Width
- 23.0 cm
- Product Length
- 33.0 cm
What’s in the Box
- 1 x Engine Oil (4.3 L recommended)
- 1 x Oil Filter
- 1 x Oil Drain Plug Gasket
- 4 x Spark Plugs (NGK LFR5A-11)
- 1 x Gear Oil (Hypoid SAE#90)
- 1 x Gear Oil Drain Plug Gasket
- 1 x Gear Oil Vent Plug Gasket
- 1 x Primary On-Engine Fuel Filter
- 1 x Fuel Filter Cup Gasket (if applicable)
- 1 x Disposable Funnel
Installation Notes
Based on Yamaha service documentation, a typical 100-hour service includes the following procedures:
- Changing engine oil and replacing the oil filter.
- Replacing the spark plugs after checking the gap.
- Changing the lower unit gear oil and replacing drain/vent gaskets.
- Replacing the primary on-engine fuel filter.
- Inspecting and cleaning the fuel system components.
- Inspecting the water pump and replacing the impeller if necessary.
- Inspecting all sacrificial anodes and replacing them if more than 50% worn.
- Checking all electrical connections for tightness and corrosion.
- Greasing all fittings, linkages, and exposed moving parts.
- Inspecting the propeller and propeller shaft for damage.
- Checking the power trim and tilt fluid level.
- Inspecting cooling water passages for blockages.
Troubleshooting & FAQ
Which Yamaha models is this 100-hour service kit compatible with?
It fits Yamaha F80B (2009-2016), F100A (2003-2008), F100B (2008-2016), and other select F80/F100 4-stroke outboards from 2003–2016. Always confirm your specific model and year in the compatibility table.
What is the recommended service interval for using this kit?
This kit is designed for the 100-hour service interval, or annually, whichever comes first, as per Yamaha's standard maintenance schedule.
Does the kit include engine oil and gear oil?
This kit contains all essential filters, gaskets, and spark plugs for a 100-hour service. However, the required engine oil (4.3L of Yamalube 4M FC-W 10W-30 or 10W-40) and gear oil (Hypoid SAE#90) must be purchased separately to ensure you have the correct type and volume for your engine.
What is the correct gap for the spark plugs?
The included NGK LFR5A-11 spark plugs should be gapped to 1.0–1.1 mm (0.039–0.043 inches) before installation for optimal engine performance.
What is the gear oil capacity for my F80A engine?
For Yamaha F80A and F100A models, the gear oil capacity is 670.0 cm³ (22.65 US oz). For the F100B model, it is a slightly larger 760.0 cm³ (25.70 US oz).
Should the water pump impeller be replaced at every 100-hour service?
The standard 100-hour service procedure includes inspecting the water pump and impeller. The impeller should be replaced only if it shows signs of wear, cracks, or brittleness. It is not always required but is a critical component to check for preventative maintenance.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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