Owner`s manual

7.2 Transmission

All necessary data and information about the transmission are fully detailed in the engine

manual. To avoid damage to the gears and increase clutch life, the engine should always be at

idle speed when shifting into forward or reverse gear.

7.3 Propellor Shaft

The propellor shaft is supported at the inboard end by the shaft coupling and at the outboard

end by a P-Bracket containing a bearing for 1" diameter shaft. It is retained in the P-Bracket by

two socket type set screws. Check this bearing for wear at every fit-out. A zink sacrificial anode

is fitted on the shaft ahead of the P-Bracket to protect the shaft and propellor from corrosion.

The anode should be inspected on a regular basis and renewed when required. The shaft

passes through the hull at the stuffing box. (See detail No. 12)

7.4 Propellor Shaft Alignment

The propellor shaft is carefully aligned with the engine prior to delivery of a yacht. However,

each time the boat is launched, this alignment should be checked, especially if there is

excessive vibration when the engine is running or loss of engine speed is evident.

Check the alignment in the following sequences:

(a) remove the bolts on the shaft coupling adjacent to the transmission box;

(b) support the weight of the shaft and coupling and slide the coupling faces together by

hand;

the gauge is gripped firmly and completely around the entire circumference of the coupling

faces.

If the feeler gauge does not pull evenly around the entire coupling, misalignment is evident.

This can be corrected by adjusting the engine legs until the coupling faces match evenly. Rotate

the shaft 1800 and again check the alignment. Should it still be out of line it could indicate a

bent shaft. The shaft must then be removed and straightened or replaced.

7.5 COUPLING

The shaft is keyed to the half coupling and is retained in the half coupling by a set screw which

is wired up at plant to ensure it cannot back off. Check the wire and tightness of the coupling

bolts at every fit-out.

If there is any reason to suspect misalignment between the engine and the propellor shaft, have

a competent service yard check the alignment and correct if necessary. Some telltale signs are

excessive vibration, unreasonable wear at the packing gland and P-bracket bearing.