Albemarle 280 EXPRESS FISHERMAN, Руководство пользователя

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280 Series Express Fisherman
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and both keyways. Try the key into the keyways. It must slide
freely into position without having side play. It might be nec-
essary to file the key with a flat file to create the correct toler-
ance.
To ensure the proper fit of your propeller, follow these proce-
dures:
Step 1: Without the key installed, slip the propeller on the
shaft by hand as far as it will go. Mark the location
at the front of the hub with a dry-marker and re-
move the propeller.
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 propel-
ler 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 ham-
mer 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 PROPERLY ON THE
SHAFT. PROBLEMS SUCH AS SHAFT VIBRATION,
PROPELLER HUB FAILURE OR SHAFT FAILURE
MAY OCCUR.
Jackshaft Propellers
The jackshaft outdrive uses dual, counter rotating propellers
that convert the engine’s power into thrust. They come in a
variety of styles, diameters and pitches. The propellers that
will best suit the needs of your 28 Express Fisherman will
depend somewhat on your application and expected average
load. Propeller sizes are identified by a number stamped on
the prop. The 1st number in the sequence (example 14 x 21) is
the diameter of the propeller and the 2nd number is the pitch.
Pitch is the theoretical distance traveled by the propeller in
each revolution. Always repair or replace a propeller immedi-
ately if it has been damaged. A damaged and therefore out of
balance propeller can cause vibration that can be felt in the
boat and could damage the outdrive gear assembly. Refer to
the stern drive owner’s manual for information on propeller
removal and installation.
Some propellers are stamped with a special code instead of
the diameter and pitch. Please refer to the outdrive owner’s
manual for specific information on propellers and the proper
installation procedure.
1.9 Performance Issues and
Propellers
Note: Before changing propellers to correct boat perfor-
mance problems, be sure other factors such as
engine tuning, bottom and running gear growth,
etc. are not the source of performance changes.
Always be sure the load conditions are those nor-
mally experienced, before changing propellers.
Your boat was shipped with propellers that typically provide
optimum performance for your boat. However there are fac-
tors that can affect performance and propeller requirements.
Some are as follows:
• It is extremely important that the boat is propped to run at
or very near the recommended top RPM with an average
load. If the top RPM is above or below the recommend
range, the propellers must be changed to prevent loss of
performance and possible engine damage.
• Diesel or gasoline engines can be damaged and the
warranty voided if the boat is not propped correctly.
Always consult your Albemarle or authorized engine
service dealer when making changes to the propellers or
if the boat does not run near the top recommended RPM.
• The addition of a Marlin or Tuna tower, heavy equipment
like life rafts, personal water craft, additional coolers, etc.,
will cause additional load on the engines. Consequently,
different propellers will be required.
Propeller Installation