Evinrude 4906B 4HP 1969 Owner's Manual page 313

8-54 LOWER UNIT
completely disassembled,
cause of the problem determined,
corrected.
2- Check for a broken shear pin by re-
moving the propeller.
key, and then remove
drive pin, and washer.
is not a tight fit, the propeller is able to
move on the pin and cause burrs on the hole.
Propeller removal may be difficult because
of these burrs. To overcome this problem,
the propeller hub has two grooves running
the full length of the hub.
from turning, and then rotate the propeller
1/4- turn to position the grooves over the
drive pin holes. The propeller can then be
pulled straight off the shaft.
Propeller with the grooves in the hub as
removal
from the shaft.
inspected, the
and then
First pull the cotter
the propeller nut,
Because the drive pin
Hold the shaft
After the
an
assist
propeller has been removed, file the drive
pin holes on both sides of the shaft
remove the burrs.
3- Check the propeller
hub. See if the hub is shredded.
propeller has been subjected to many strikes
against underwater objects, it could slip on
its hub. For this size engine, in most cases,
it is less expensive to purchase a new pro-
peller instead of having it rebuilt.
to
to
and the rubber
If the