Specifications

CHAPTER 2: FEATURES / SYSTEMS 15
3488 Motoryacht • Owner’s Manual Supplement
Engine Room Ventilation System
The bilge blowers remove fumes from the engine room and draw fresh air into the compartment through the deck
vents. To ensure fresh air circulation, use the bilge blowers for at least four minutes before starting the engines or
optional generator and while operating the yacht below cruising speed.
Shaft-Transmission Alignment
Alignment between the engine transmis-
sion output shaft and the propeller is
very critical. The alignment has been
performed at the factory and was
rechecked by the dealer after the boat
had been in the water for 48 hours.
• An alignment inspection should be
performed by a marine mechanic as
part of the routine maintenance pro-
gram after the initial 30 hours of
operation, then every 60 hours and
whenever unusual noise or vibration
is noticed.
• Shaft-transmission alignment should
be performed by a marine mechanic
since it requires moving the engine
and prop shaft.
• To insure proper alignment after a
haulout or dry storage, wait 48 hours
after launching before final alignment
adjustments by a marine mechanic
are made.
Shaft Log Packless Sealing System
The shaft log packless sealing system’s shaft seal is a maintenance-free, watertight seal that doesn’t require packing
or adjustments.
Use of the blower system is not a guarantee that explosive fumes have been removed.
If you smell any fuel, do not start the engines. If the engines are already running,
immediately shut off the engines and all electrical accessories and check immediately.
Do not obstruct or modify the ventilation system.
WARNING!
!
TRANSMISSION-TO-PROP SHAFT COMPONENTS (TYPICAL)
SECTION VIEW
OF HULL
CLAMPS
CLAMPS
SHAFT LOG
(TRIANGLE FLANGE)
BELLOWS
SHAFT
ROTOR
FLANGE BOLTS
CARBON/GRAPHITE
FLANGE
COUPLER
TRANSMISSION
OUTPUT FLANGE
SYSTEM DAMAGE HAZARD!
• If you suspect a shaft-transmission misalignment, have a qualified mechanic perform an
alignment inspection as soon as possible.
• Continued use may lead to premature engine, transmission, shaft, shaft seal and/or
hull damage!
CAUTION!
!