Sydney Diesel Marine

Yanmar Planing powerboats

Yanmar 6LF Series

up to 550 hp · The newest six-cylinder Yanmar

Official Yanmar 6LF series marine diesel engine

The 6LF is the newest six in the Yanmar range, a common-rail six-cylinder up to around 550 horsepower, built for the fast planing boats that want the top of the line.

Newer and fully electronic, it needs dealer-level diagnostics done right. We read it with SmartAssist and look after it from the first service to a full rebuild.

Who it’s for: Powerboat owners running a 6LF530 or 6LF550, sportsfishers, cruisers and fast launches.

Models in this series

6LF5306LF550

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 6LF

  • Scheduled servicing and repairs for the common-rail 6LF.
  • SmartAssist dealer diagnostics for fault codes and live data.
  • Turbo, cooling, exhaust and high-pressure fuel-system work.
  • Full rebuilds and repowers, the deep-end work we’re known for.

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.