Yamaha F25 100 Hour Service Kit – Fits Yamaha F25 and T25 Outboards (2009-2019)
Yamaha F25 100 Hour Service Kit – Fits Yamaha F25 and T25 Outboards (2009-2019) is backordered and will ship as soon as it is back in stock.
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Yamaha F25 100 Hour Service Kit – Fits Yamaha F25 and T25 Outboards...
Product Details
This Yamaha F25 100 Hour Service Kit includes all the essential components for performing the Yamaha-recommended 100-hour maintenance on F25 and T25 4-stroke outboard motors manufactured between 2009 and 2019. Each part is engineered to meet or exceed OEM specifications for reliable performance.
This comprehensive kit serves as a direct aftermarket replacement for Yamaha OEM service kits F100HRKT152025-21, F100HRKTF25C-84, and KIT-100HR-84.
- Complete kit for standard 100-hour or annual service intervals.
- Includes all required filters, oils, gaskets, and spark plugs for a full service.
- Designed for DIY or professional installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | F100HRKT152025-21 |
| Yamaha | F100HRKTF25C-84 |
| Yamaha | KIT-100HR-84 |
Engine & Model Compatibility
Confirm your engine model and year in the table below. This kit is compatible with the following Yamaha F25 and T25 outboard models.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F25A | 25 | 4-Stroke | 2009–2015 | F100HRKT152025-21 | |
| Yamaha | F25B | 25 | 4-Stroke | 2012–2018 | F100HRKT152025-21 | |
| Yamaha | F25C | 25 | 4-Stroke | 2016–2019 | F100HRKTF25C-84 | Includes F25LC, F25LWC, F25LWHC, F25LWTC, F25SMHC, F25SWC, F25SWHC |
| Yamaha | F25EHA | 25 | 4-Stroke | 2009–2015 | F100HRKT152025-21 | Electric start with tiller handle |
| Yamaha | F25EA | 25 | 4-Stroke | 2009–2015 | F100HRKT152025-21 | Electric start with remote control |
| Yamaha | F25MHA | 25 | 4-Stroke | 2009–2015 | F100HRKT152025-21 | Manual start with tiller handle |
| Yamaha | T25A | 25 | 4-Stroke | 2009–2019 | F100HRKT152025-21 | High thrust model |
| Yamaha | T25C | 25 | 4-Stroke | 2016–2019 | F100HRKTF25C-84 | High thrust model |
| Yamaha | T25WTC | 25 | 4-Stroke | 2018–2019 | F100HRKTF25C-84 | High thrust model with power trim/tilt |
Technical Specs
- Product Type
- 100-Hour Maintenance Service Kit
- Installation
- DIY or Professional Installation
- Fuel Type
- Regular Unleaded Gasoline
- Engine Oil Type
- Yamalube 10W-30
- Gear Oil Type
- Yamalube Marine Gear Lube (SAE 90, 80W-90)
- Compatibility
- Yamaha F25/T25 4-Stroke Outboard Engines (2009–2019)
- Product Dimensions
- 32.5" L x 22.5" W x 16.5" H
What’s in the Box
This kit contains everything needed for a full 100-hour service for all compatible models, including F25A, F25B, F25C, T25A, and T25C variants.
- 2 x Yamalube 10W-30 Outboard Engine Oil (LUB-10W30-FC-12)
- 1 x Yamalube Marine Gear Lube SAE90 80W90 (ACC-GEARL-UB-QT)
- 1 x Yamaha Oil Filter (5GH-13440-80-00)
- 1 x Yamaha Outboard Fuel Filter (61N-24563-10-00)
- 1 x Yamaha Outboard Oil Plug Drain Gasket (90430-14M09-00)
- 2 x Yamaha Outboard Lower Unit Drain Gasket (90430-08003-00)
- 2 x NGK DPR6EB9 Spark Plug (#3108)
Installation Notes
- Ensure the engine is turned off and cool before beginning service. Gather all necessary tools and have a drain pan ready.
- Position the drain pan and remove the lower unit drain and vent screws to drain the gear lube completely.
- Remove the engine oil drain plug and oil fill cap to allow the engine oil to drain.
- Replace the old oil filter and fuel filter with the new ones provided in the kit, ensuring a secure fit.
- Install new drain gaskets on the drain plugs and reinstall them, torquing to the manufacturer's specifications.
- Refill the lower unit with new gear lube until it flows from the upper vent hole, then secure both screws.
- Refill the engine with the provided 10W-30 engine oil, checking the dipstick to ensure the correct level.
- Replace the spark plugs, making sure to check and set the correct gap before installation.
- Start the engine for a brief period, check for any leaks around filters and drain plugs, and verify the oil level again.
Troubleshooting & FAQ
How do I know if this kit fits my engine?
This kit fits specific Yamaha F25 and T25 outboard models manufactured from 2009–2019. Please refer to the 'Engine & Model Compatibility' table on this page and cross-reference your engine's model and year to ensure a perfect match.
What is the difference between the kit variations?
The contents for the referenced OEM kits (F100HRKT152025-21 and F100HRKTF25C-84) are identical according to our data. This single aftermarket kit covers all models listed in the compatibility table, providing the correct components for a full 100-hour service.
How often should I perform this service?
As the name suggests, this service is recommended by Yamaha every 100 hours of operation or annually, whichever comes first. Regular maintenance is crucial for engine longevity and performance.
What are the signs my outboard needs this service?
Common signs include a drop in performance, difficulty starting, increased fuel consumption, or unusual engine noises. However, the best practice is to follow the scheduled 100-hour/annual service interval regardless of symptoms to prevent premature wear and tear.
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.
Payment & Security
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