Yamaha F300 Oil & Filter Change
Fresh oil and a new filter are the cheapest insurance for your 300 hp Yamaha F300. Below is the exact oil filter that fits, a step-by-step video of the full oil change, and what else you need for the job.
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Watch: how to do it (step by step)
How to Replace Oil Filter – Yamaha F300
Engine Oil Change – ALL Yamaha F225, F250, F300 4.2L Outboards
Yamaha F225, F250, F300 4.2L Outboard Engine Oil Change – Oil Filter Replacement
Tools Needed
- Yamaha oil change kit (10w30 or 240 depending on region)
- 5 mm socket and ratchet for apron screws
- 14 mm socket and ratchet for drain plug
- Torque wrench
- White marker (optional, to mark hours on oil filter)
- Disposable funnel
- Grease
Safety
- Run the engine for a few minutes before starting to warm up the oil.
- Be cautious of hot water coming out during engine warm-up.
Steps
- Run the engine for 5 minutes to warm up the oil.
- Remove the apron screws using a 5 mm socket and ratchet.
- Locate and loosen the drain plug with a 14 mm socket.
- Drain the old oil completely.
- Clean the oil filter area, remove the old oil filter, and discard it.
- Apply some used oil on the new oil filter's O-ring.
- Hand-tighten the new oil filter onto the engine block.
- Replace the drain plug, using a new washer, and torque it down to 18 ft-lbs (24 Nm).
- Fill the engine with the recommended amount of fresh oil (6.74 qt or 7 liters minus 10 oz).
- Reinstall the apron screws by hand, without using power tools.
- Start the engine and let it run for a few minutes to allow the oil to circulate.
- Trim the engine down, wait for 5-10 minutes, then check the oil level with the dipstick.
Tips
- Mark the hours on the new oil filter using a white marker (optional).
- Grease the apron bolts lightly before reinstalling the apron.
Which part do I need for my Yamaha F300?
For most F300 owners the part above (18-7954) is the right choice. Price tip: the aftermarket numbers are usually noticeably cheaper than the OEM-branded box — it is the same physical part. If you need an exact match, these compatible part numbers also fit:
Show all compatible part numbers (2)
| Part number | Description | |
|---|---|---|
| N26-13440-00-00 | Oil filter | Find on Amazon → |
| N26-13440-02-00 | Oil filter | Find on Amazon → |
Many of these are the same physical part under different brand numbers. Confirm against your engine plate before ordering.
Frequently asked questions
What oil filter fits a Yamaha F300 (300 hp)?
The Yamaha F300 uses the oil filter sold as 18-7954, plus its OEM and aftermarket cross-references (2 compatible numbers are listed above). Confirm the number against your engine's model code and year plate before ordering.
How often should I replace the oil filter on a Yamaha F300?
Change the oil and filter every 100 running hours or once a season, whichever comes first (check your manual for the exact interval).
What else do I need for an oil change on a Yamaha F300?
The correct grade and amount of engine oil (see the manual or the video), a new drain-plug washer, a filter wrench and a drain pan or oil extractor pump. Nothing exotic — it is standard service equipment.
What are the signs the oil is overdue on a Yamaha F300?
Dark, gritty oil well past its interval, low-pressure warnings — and milky or grey oil, which means water is getting in and should be investigated immediately.
How long does an oil change take on a Yamaha F300?
About an hour for a competent DIYer. Run the engine warm first — warm oil drains faster and carries more contaminants out with it.
Related guides
- Yamaha F25 oil filter
- Yamaha F50 oil filter
- Yamaha F225 oil filter
- Yamaha F250 oil filter
- All Yamaha maintenance guides
- Free Yamaha boat valuation
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