Nanni T8V.320, Operator'S Manual, Page: 50 / 98

50
ENGINE AND SAILING
When under sail, it is possible to limit the resistance
produced by the propeller of the engine.
CAUTION !
Refer to the manufacturer’s recommendations regarding
the use of the transmission in sailing condition.
Propeller blades :
Foldable blades :
• Put the throttle lever astern (in reverse). The blades
will close as soon as the boat moves forward.
Hydrodynamic resistance created by the blades is
then reduced and minimized.
Non foldable blades :
• Put the throttle lever astern (in reverse). The
propeller does not rotate and create a hydrodynamic
resistance.
• Put the lever in neutral, the propeller will rotate and
will generate a lower hydrodynamic resistance than
in astern.
CAUTION !
Sailing with the engine stopped and with the lever in
neutral must not exceed 6 hours in a row. The propeller
can drive the rotation of the shaft and damage the
transmission. Run the engine for 15 minutes to lubricate
the transmission at least every 6 hours.
Whatever the type of propeller and transmission, never
sail with the engine stopped in forward gear (in ahead
mode).
Under sail, close the seacock if the boat is reaching a
speed above 8 knots.
Water can enter in the raw water intake and fill the
exhaust system. Do not forget to open the seacock
again before restarting the engine.
TROLLING VALVE
The Trolling valve system allows to reduce the rotation
speed of the propeller below its speed when the engine
is at idle. The boat speed is reduced by 30% to 70%.
CAUTION !
The Trolling valve system must never be used for
manoeuvring. It also must never be used at an engine
speed of more than 1200 rpm (refer to Gear Box
operating manual).
S07 STARTING & RUNNING