Sabre Sabre 30, Owner'S Manual

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3/21/2017 Sabre 30 Owners Manual
36/81
16:12 ENGINE GAUGE CONDENSATION: This is very common as the damp marine environment
makes some condensation unavoidable. Condensation does not reduce the effective life of
the gauge and it does not affect the gauge's accuracy. Although at times, it does make
the gauge hard to read.
Condensation occurs when relatively warm and moist air from a boat's interior strikes the
cooler lens of the gauge. Cooler air cannot support as much water vapor as warm air, so
the moisture is precipitated on the lens.
The gauges are not vapor­proof, and it would be prohibitively expensive to make them that
way.
16:13 WINTERIZING: Refer to engine Owner's Manual and Section 30:00 for complete
winterizing details.
16:14 ENGINE WIRING: Refer to engine wiring diagrams in the back of this manual.
17:00 DRIVE SHAFT AND PROPELLER SYSTEM
The parts in this system are specifically selected for their application and any
replacement must be with identical parts, or those approved by Sabre Yachts. (Refer to I­
09)
17:01 OFFSET PROPELLERS: Sabre yachts are built with propeller shafts offset to port
or starboard depending on engine rotation. Engines with clockwise rotation (right hand)
have shafts offset to port.
After extensive research it was found that for this hull type an offset propeller
benefited engine performance and handling characteristics.
Sabre rudders are partially balanced with the rudder shaft about 15% aft of its leading
edge. This feature reduces the load on the helm and makes it more comfortable to hold
while under sail. The powerful wash of a centerline propeller causes the helm to veer to
one side or the other after a turn is initiated. The offset propeller wash to flow to
the side of the rudder. A second benefit is that the angle between the shaft and the fore
and aft axis of the boat is less than would be possible with a centerline installed shaft.
17:02 ENGINE ALIGNMENT: Engine alignments should be carried out by experienced marine
service personnel. While we do not recommend that you attempt alignment yourself, there
follows a brief description so that you may become familiar with the procedure and better
understand its importance. (Refer to I­09)
Careful alignment is critical to the performance of the auxiliary engine. An array of
problems from excessive vibration and noise to extensive wear of engine parts may occur as
a result of misalignment.
Engines must be properly and exactly aligned with the propeller shaft. The engine is
aligned when first installed then disconnected for transportation and launching. Boats
may change shape very slightly upon launching and rigging. It is therefore necessary to
align the engine to the shaft after launching, rigging, and tuning. Preferably fuel and
water tanks should be about half full and the usual equipment on board so the load does
not drastically change.
A feeler gauge is used to check that the coupling flanges come exactly together at all
points. If the couplings are mis­aligned the engine is shifter by tilting, lowering,
raising, and turning until the coupling flanges meet evenly in all positions without using
force.
17:00 DRIVE SHAFT AND PROPELLER SYSTEM (Cont'd)
As a final check for alignment, the engine half coupling should be held stationary and
the shaft half coupling rotated in 90 degree stages checking the gap at each turn. This
will also check whether the shaft half coupling is in alignment on its shaft, with its
face perpendicular to the centerline axis of the shaft, or may indicate a bent propeller