Yanmar Performance sail & fast cruisers
Yanmar 4LH Series
140–240 hp · The legacy performance four
When a yacht or a fast cruiser wanted more than an auxiliary, the 4LH was the engine, a turbocharged four from roughly 140 up to 240 horsepower, with the low-end torque to push a heavy hull along.
It’s a mechanical engine at heart, so it’s honest to work on and well worth keeping alive. We service, repair and rebuild the whole 4LH range.
The 4LH was the performance four that so many fast cruisers ran before the common-rail 4LV arrived, and there are plenty still going strong. We look after all of them.
Who it’s for: Owners of performance sailboats and fast cruisers running a 4LHA-STP or another engine in the 4LH range.
Models in this series
Not sure which you’ve got? Tell us the number off the rocker cover or the plate and we’ll sort it.
What we do
Looking after your 4LH
- Servicing and repairs across the 4LH range.
- Fuel injection, turbo and cooling-system work.
- Fault-finding traced to the cause, not guesswork.
- Rebuilds and repowers when the hours are up.
Related services
How we can help
Phil’s tips
Straight from the workshop
Tether the key to the sea cock
If you close the sea cock for the engine every time you leave the vessel, leave the engine key tethered to the sea cock handle. You physically cannot start the engine without opening the water first.
Let it warm up
Always let your engine warm up before working it. A few minutes at the dock gives the oil time to circulate, and you will get a better service life out of the engine for it.
Or call Phil: 0420 363 077