Yanmar 3GM30F Oil & Filter Change
Fresh oil and a new filter are the cheapest insurance for your Yanmar 3GM30F. Below is the oil filter we recommend, which 3GM30F variants it 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 the oil filter on a Yanmar 3GM30F
Unusual Oil Change/Minor Service – Yanmar 3GM30F
Tools Needed
- 7/8 inch wrench
- 14 mm socket
- Oil filter wrench
- 6 mil trash bag
- Gloves
- Zip tie
Safety
- Wear gloves to minimize mess and protect hands.
- Ensure the engine is cool before starting the service.
Steps
- Loosen the oil cap on the crankcase to allow air in and speed up the draining process.
- Place a 6 mil trash bag under the engine to catch the oil.
- Remove the drain plug using a 14 mm socket.
- Allow the oil to drain completely into the bag.
- Use an oil filter wrench to remove the oil filter, ensuring minimal oil loss.
- Inspect the oil filter for any signs of wear or damage.
- Clean the engine block where the oil filter was seated to remove any residual gasket material.
- Lubricate the new oil filter's O-ring with engine oil.
- Install the new oil filter by hand, turning it clockwise until it is snug, then using the wrench to tighten it one full turn.
- Reinstall the drain plug and tighten it securely.
- Dispose of the old oil and filter responsibly, following local regulations.
Tips
- Use Yanmar-specific oil filters to ensure a proper fit and compatibility with the engine.
- Run the engine for 10-15 minutes after the service to ensure the system is properly bled and there are no air pockets.
Which part do I need for my Yanmar 3GM30F?
For most 3GM30F owners the part above (18-7910-1) 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 (3)
| Part number | Description | Fits | |
|---|---|---|---|
| 119305-35170 | Yanmar, Oil Filter, 119305-35170 | 3GM30F | Find on Amazon → |
| 30220 | Oil filter | 3GM30F | Find on Amazon → |
| YAN119305-35170 | Yanmar Oil Filter | 3GM30F | Find on Amazon → |
Many of these are the same physical part under different brand numbers. Build years are shown where our parts data has them. Where a variant has no years, only the model code is listed. Confirm against your engine plate before ordering.
Frequently asked questions
What oil filter fits a Yanmar 3GM30F?
The Yanmar 3GM30F uses the oil filter sold as Sierra 18-7910-1, plus its OEM and aftermarket cross-references (3 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 Yanmar 3GM30F?
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 Yanmar 3GM30F?
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 Yanmar 3GM30F?
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 Yanmar 3GM30F?
About an hour for a competent DIYer. Run the engine warm first — warm oil drains faster and carries more contaminants out with it.
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As an Amazon Associate we earn from qualifying purchases — at no extra cost to you. Prices and availability are shown at checkout. This guide is for reference; always follow the engine manufacturer’s service manual.