Tiara Yachts 53 COUPE, Owner'S Manual

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COMMISSIONING YOUR BOAT
6-4 53 COUPE
9. Reinstall the propeller. Push the propeller on the shaft until it seats on the
taper.
10. Check the front edge of the propeller hub to see if it lines up with the mark
made in step 6.
a. If the front edge of the hub is at the mark, go to step 11.
b. If the front edge of the hub is beyond (covering) the mark, go back to
step 3 and repeat the procedure.
c. If the front edge of the hub is behind (not to) the mark, go back to
step 3 and repeat the procedure. If this is the second time you have
tried these steps, determine the cause of the problem:
i. Make sure the key is completely seated in the flat section of the
keyway.
ii. Make sure no debris or foreign material is between the key, shaft
keyway and propeller hub keyway.
iii. Measure the key height, shaft keyway depth, and prop hub
keyway depth. The prop shaft keyway depth plus the prop hub
keyway depth should be 0.010" to 0.015" greater than the key
height. If it is not, contact your Tiara Yachts dealer for further as -
sistance.
11. Install the shortest brass propeller jam nut on the threaded shaft end and
tighten to the propeller. Apply torque to tighten the propeller jam nut, taking
care to not bend the shaft or deflect the boat bottom. If the applied torque
causes the shaft to bend or the boat bottom to deflect, the shaft may come
out of its specified straightness tolerance, resulting in drivetrain vibration
at some speeds.
12. Install the second-thickest brass propeller jam nut. The same care should
be taken when tightening this jam nut as in step 11.
13. Install the cotter pin in the hole provided at the end of the propeller shaft.
Bend only one of the legs of the pin to secure it in place.
Repeat for the other propeller.
Ensure the propellers are installed on the correct shaft before putting the
boat in the water. If they are on the wrong shaft, the boat will move in reverse
when shifted into forward.