57 documented fitments · 40 hp · 3000 rpm
Propeller for the Yanmar 3JH40.
We've documented 57 propeller installations behind this engine — the ratios, drives and sizes below are what the fleet actually runs.
Rated power
40 hp
Max RPM
3000
Common ratios
2.49:1 · 2.23:1 · 2.09:1 · 2.33:1
Drive split
9 shaft · 48 saildrive
Documented propeller families
The fleet
Boats we've propped with the 3JH40
- Balance 442×33
- Hanse 418×4
- Bavaria C38×3
- Beneteau 37.1×3
- Beneteau Oceanis 38.1×2
- Catana 381×2
- Elan 36×1
- Hanse 388×1
- Najad 360×1
- Swan 38×1
3JH40 propeller questions
What size propeller suits a Yanmar 3JH40?
It depends on the gearbox ratio behind it (documented installations most often run 2.49:1, 2.23:1, 2.09:1) and the boat it pushes. Power and max RPM set the optimum diameter; the ratio converts engine speed to shaft speed. The Builder runs the numbers and an engineer verifies.
Which propeller family do Yanmar 3JH40 owners fit?
Documented Yanmar 3JH40 installations run Varifold 3-blade, Autoprop H5 — the split follows boat type and usage rather than the engine itself.
Does the Yanmar 3JH40 come in shaft and saildrive versions?
Both are documented: 9 shaft and 48 saildrive installations. The propeller differs (hub vs spline fitting) so tell us which yours is.
Running a Yanmar 3JH40?
Two minutes in the Builder — engine pre-filled, gearbox ratio checked against the fleet, verified by an engineer within one business day.