Yanmar 3YM30 Oil & Filter Change
Fresh oil and a new filter are the cheapest insurance for your Yanmar 3YM30. Below is the oil filter we recommend, which 3YM30 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 3YM30
Yanmar 3YM30 Service. Part 1 OIL and AIR Filter Change. This engine eats it's Air filter!
Yanmar YM30 Oil Filter Replacement Guide
Tools Needed
- Socket wrench with appropriate size socket or oil filter remover tool (e.g., strap wrench)
- Oil extraction pump (manual or electric)
- Funnel
- Old screwdriver
- Rag or cloth
Safety
- Isolate the engine from its battery to prevent sparks and potential electrical damage.
- Be cautious when handling hot parts; allow the engine to cool before starting work.
Steps
- Warm up both engines for 20 minutes to ensure oil is well-circulated.
- Turn off the engines and let them stand for three to four minutes to allow oil to drain into the sump.
- Isolate the engine from its battery using appropriate disconnects or switches.
- Locate the oil filter on the side of the Yanmar YM30 engine.
- Remove the old oil via the dipstick hole using an oil extraction pump.
- Check the oil filler cap for moisture, which may indicate a head gasket failure or other issues.
- Pour clean oil into the engine through the oil filler hole to flush out any remaining dirt; remove it with the oil extraction pump.
- Pierce the bottom of the old oil filter with an old screwdriver to allow residual oil to drain.
- Remove the old oil filter using a socket wrench or strap wrench, ensuring not to damage the sealing surface on the engine block.
- Clean the mounting surface on the engine and the new oil filter's gasket.
- Lubricate the new oil filter's gasket with clean engine oil.
- Hand-tighten the new oil filter onto the engine by turning it clockwise, ensuring not to overtighten (usually around 1/4 to 3/4 of a turn after the gasket first touches).
- Reconnect the battery and check for any leaks.
Tips
- Before starting, write the date and engine hours on the old oil filter for future reference.
- Consider using a manual oil extraction pump as an electric one may fail during use.
- To prevent oil spills, place a container or tray underneath the oil filter while removing it.
Which part do I need for my Yanmar 3YM30?
For most 3YM30 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 (2)
| Part number | Description | Fits | |
|---|---|---|---|
| 30220 | Oil filter | 3YM30 | Find on Amazon → |
| YAN119305-35170 | Yanmar Oil Filter | 3YM30 | 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 3YM30?
The Yanmar 3YM30 uses the oil filter sold as Sierra 18-7910-1, 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 Yanmar 3YM30?
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 3YM30?
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 3YM30?
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 3YM30?
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.