The 6LY440 is the modern common-rail six, 440 horsepower of clean, quiet power to get a planing boat up and moving, and the current-generation replacement for the older 6LY sixes.
Because it’s fully electronic, it rewards proper dealer diagnostics. We read it with Yanmar’s own SmartAssist software and fix the cause, not the symptom.
Who it’s for: Powerboat owners running a 6LY440, sportsfishers, cruisers and fast launches.
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 6LY440
- Scheduled servicing and repairs for the common-rail 6LY440.
- SmartAssist dealer diagnostics for fault codes and live data.
- Turbo, cooling, exhaust and high-pressure fuel-system work.
- Full 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