Yanmar 3HM35 Fuel Filter Replacement
A clogged fuel filter starves your Yanmar 3HM35 of fuel — hard starts, hesitation and lost power at speed. Below is the exact filter that fits, a step-by-step video, and the symptoms to look for.
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Watch: how to do it (step by step)
How to Replace Fuel Filter – Yanmar 3H M35F
Yanmar 3HM35F fuel priming/lift pump explained
Tools Needed
- Screwdriver (to remove bolts)
- Replacement fuel priming pump
Safety
- Ensure the engine is turned off and cool before starting any work.
- Wear safety glasses to protect your eyes from debris.
Steps
- Locate the fuel priming pump on your Yanmar 3HM35F Marine diesel engine.
- Use a screwdriver to remove the two bolts that hold the priming pump in place.
- Carefully remove the old priming pump, noting the orientation of the fuel in and fuel out ports.
- Inspect the rubber diaphragm inside the old pump for any signs of degradation or cracking.
- Install the new priming pump, ensuring the fuel in and fuel out ports are correctly oriented.
- Secure the new pump with the two bolts, tightening them to the manufacturer's specifications.
Tips
- Regularly check the oil sump level to detect any fuel contamination early.
- If the oil level is rising or the oil appears thin and smells of fuel, inspect the priming pump for leaks.
- Keep an eye on the condition of the rubber diaphragm, as it can degrade over time.
Which part do I need for my Yanmar 3HM35?
For most 3HM35 owners the part above (104500) 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 (6)
| Part number | Description | |
|---|---|---|
| 124770 | Yanmar, Air Filter, 124770-12540 | Find on Amazon → |
| 24341 | Yanmar, Fuel Filter O-Ring, 1A S-44.0, 24341-000440 | Find on Amazon → |
| YAN104500-55710 | Yanmar Secondary Fuel Filter | Find on Amazon → |
| YAN124770-12540 | Yanmar Air Filter ( Intake Element ) | Find on Amazon → |
| YAN23418-060000 | Yanmar Nylon Secondary Fuel Filter Housing Bleed Washer | Find on Amazon → |
| YAN24341-000440 | Yanmar Secondary Fuel Filter O-Ring 1A S-44.0 | 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 fuel filter fits a Yanmar 3HM35?
The Yanmar 3HM35 uses the fuel filter sold as 104500, plus its OEM and aftermarket cross-references (6 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 fuel filter on a Yanmar 3HM35?
Replace the fuel filter once a season or per the service manual — and sooner after a batch of dirty fuel or water in the separator.
What are the symptoms of a clogged fuel filter on a Yanmar 3HM35?
Hard starting, hesitation or surging under load, stalling at higher throttle and a general loss of power. The engine typically runs fine at idle and starves when fuel demand rises.
Do I need to bleed or prime the fuel system afterwards?
On diesel engines, yes — air must be bled from the fuel system after the filter change, and the video shows the procedure. On petrol outboards, squeeze the primer bulb firm before starting.
How long does a fuel filter change take on a Yanmar 3HM35?
Usually 30-60 minutes including priming or bleeding — a straightforward DIY job with basic tools.
Related guides
- Yanmar 2GM20 fuel filter
- Yanmar 2GM20F fuel filter
- Yanmar 3HM35F fuel filter
- All Yanmar maintenance guides
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