Diesel Outboard MotorYanmar D27 diesel outboard motor. It's a 27hp, 3 cylinder, direct injection, water cooled, tiller controlled, 22.5" shaft, electric start outboard that will run on diesel, kerosene or biodiesel.
The D
27 has proven very reliable - two motors like this powered a
35' multihull across the Pacific (only 385 gallons were used in the 2,250 mile leg to
Hawaii), and I used an identical motor for over 3,000 miles of open ocean, as an
auxiliary
when my primary 180hp engine failed during a circumnavigation, running the entire time on
fuel made of soybean oil.
The motor uses 1-1/2 gallons per hour at full speed, and doesn't suffer from the high
whining noise and vibration that are the curse of gas outboards. If you use biodiesel for
fuel the exhaust smells like popcorn instead of the underside of a truck, and there are no
diesel fumes in the boat. The high torque and reliability make
it a
great motor for a commercial work boat, auxiliary, or any application where reliability is
essential.
This motor was a company demo model used in South America, then I kept it as a
land-based reserve in case my primary Yanmar failed (never did) . Not sure how many hours
are on it, I've had it in storage since '96, but when I used it for a half day last year
it ran perfectly...and it started easily this week - no guarantees can be made and the
motor will be sold as is. It appears to be in good shape, with a few scratches and wear
points. The only problems I'm aware of are the eventual need to replace fuel lines (easy
job) which soften over
the years from biodiesel, and a chip in the bottom cowling at
the back, where the latch fastens the cover in place (see photo). The latch works fine,
and could be easily repaired with fiberglass or aluminum. See specs and photos below (more
photos can be emailed).
I will also include a service manual and a variety of spare parts, including spare injector, impellers, drive belts, zincs, fuel and oil filter, seals, prop shaft nuts, and various gaskets and replacement nuts/bolts. I'm checking on the value of these spares and will revise this page when known.
These motors sell for about $8,000 (1998)