4-5
350 Express Series
Basic Systems Operation
Transmission
Through a series of gears, the transmission transmits the motive force
of the engine to the propeller. The transmission has one forward and
one reverse speed, and is shifted by the transmission selector on the
dash. All the operation, specification and maintenance information is
contained in the engine’s owner manual.
The power generated by the engine is transmitted as a combination of
the straight inboard and the V-drive transmission (a series of gears),
which drives the shaft coupling and the propeller shaft assembly. The
engine’s transmission is fore of the engines instead of aft. The
propeller shaft is supported and aligned with the engine by a thru-hull
shaft log and an outside strut.
Shaft Assembly - Inboards, V-Drives
This assembly makes it possible for the shaft to penetrate the hull
bottom without allowing water to enter around the joint. The shaft
coupling is the connecting point between the engine and the shaft
assembly.
SHAFT LOG AND SHAFT SEAL
The shaft log is laminated to the hull. A rubber hose is clamped to the
shaft log and to the shaft seal. The flexibility of the rubber hose allows
it to absorb minor engine shock, such as moving from forward to
reverse, while maintaining a watertight seal on the shaft log and the
shaft seal.
CAUTION
The shaft seal and rubber hose should be inspected
monthly for wear, leakage and deterioration.
Excessive water entry, especially if unattended, could
result in the submergence of the engine compartment,
or the entire yacht.
SHAFT
LOG
HOSE
CLAMPS
HOSE
STAINLESS
STEEL BANDS
STRONG SEAL
STAINLESS STEEL
INJECTION FITTING
CSR173-15
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