3000 EXPRESS
Step 2: Install the key in the shaft.
Step 3: Again, slide the propeller into position by hand. Please note that the key should not extend
beyond the forward edge of the propeller hub. The propeller should reach the same spot
as before. If it does not, the key has probably moved up the keyway, or the key does not
fit properly in one or both of the keyways.
Step 4: Install the propeller nuts. When installing the shaft nuts, take care not to tighten them too
much. Do not force the nut into a tighter position by using a hammer or extension on the
arm of the wrench. Tighten the thin nut, then lock the wide nut tight against the thin nut
and insert the cotter pin.
If not properly installed, the propeller will be off balance and this is a frequent cause of vibration.
It could also cause the propeller hub to split.
DO NOT ATTEMPT TO OPERATE THE BOAT IF THE PROPELLER DOES NOT FIT PROP-
ERLY ON THE SHAFT. PROBLEMS SUCH AS SHAFT VIBRATION, PROPELLER HUB FAIL-
URE OR SHAFT FAILURE MAY OCCUR.
Note: Before changing propellers to correct boat performance problems, be sure other
factors such as engine tuning, bottom and running gear growth, etc., are not the
source of performance changes.
Note: Always be sure the engine is properly tuned and load conditions are those normally
experienced, before changing propellers.
KEEP AWAY FROM THE PROPULSION MACHINERY DURING ITS OPERATION OR WHEN-
EVER THE BOAT IS IN MOTION. MOVEMENT OF WATER PAST A PROPELLER CAN
CAUSE THE PROPELLER, SHAFT AND OTHER PROPULSION MACHINERY TO ROTATE
EVEN IF THAT EQUIPMENT IS NOT BEING OPERATED INTENTIONALLY.
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