Evinrude 4906B 4HP 1969, Owner'S Manual

Page: 262 / 422

Arrangement
of
propeller shaft parts used on most
1.5 hp
to 4
hp engines.
Unable to Shift into Forward or Reverse
Remove the propeller and check to de-
termine if the shear pin has been broken. If
the unit being serviced has the shear pin at
the rear of the propeller, the propeller
should be removed and the shear pin check-
ed at the rear of the propeller shaft.
Check the bellcrank under the power-
head. This is accomplished by first checking
in the Appendix to determine the type of
shift mechanism installed on the unit being
serviced. If the Appendix check reveals the
powerhead must be removed in order to
check the shift mechanism, then the power-
head must be removed. If the unit has a
window in the exhaust housing, then the
window must be removed. Hold the shift
rod with a pair of pliers and at the same
time attempt to move the shift lever on the
starboard side of the engine. If it is possible
to move the shift lever, the bellcrank is
worn.
Location
of
the shear pin through the propeller shaft
just ahead
of
the propeller.
TROUBLESHOOTING 8-3
Arrangement of the shear pin, washer, and propeller
nut on
a
typical lower unit. In this case, the shear pin
is installed just behind the washer.
If the engine is the type requirmg the
lower unit to be lowered slightly to gain
access to the shift rod: Lower the lower
unit slightly, and then hold the shift rod
with a pair of pliers and attempt to move
the shift lever on the starboard side of the
engine. If the lever can move, the bellcrank
is worn and must be repaired.
View into the exhaust housing
after
the powerhead
has been removed. The bellcrank part of the upper
mechanical shift mechanism is clearly visible.