Evinrude 4906B 4HP 1969 Owner's Manual page 312

Start the engine and observe the tattle-
tale flow of water from
exhaust housing. The water pump installa-
tion work is verified.
connected to the lower unit,
water will be visible from the
port. Shift the engine into the three gears
and check for smoothness of operation and
satisfactory performance.
8-8 ELECTROMATIC
DESCRIPTION
Electromatic gearcases
Johnson 40 hp units from 1962 thru 1970.
Prior to 1962, the 40 hp unit was equipped
with a manual shift,
previous section.
When the unit is shifted to the forward
position, an electric
closes the circuit
magnetic coil in the gearcase.
is
coil energized,
anchors the free end of the clutch spring to
the flange of the clutch hub. The revolving
gear causes the spring to wrap around the
hub, creating a direct
propeller shaft.
Power is transmitted
gear, forward gear, and propeller
the propeller.
When the lower unit is shifted
reverse position, the reverse coil is energiz-
ed, and the same sequence of events takes
place. The reverse
WAYS the one nearest the propeller.
The boat battery provides 12-volt power
for operation. Therefore,
ered in this manual are equipped
Gear arrangement used on the 40-hp electromatic
shift lower unit.
relief in the
idle
If a "Flushe tte "
VERY LITTLE
idle
LOWER UNIT
were used on all
as covered in the
switch in the shift box
to the forward electro-
After the
magnetism attracts
coupling with the
through the pinion
shaft to
to the
gear assembly is
all engines cov-
with a
generator to maintain battery amperage and
voltage for efficient
mechanism.
is
position, power moves through the ignition
switch to the switch in the shift box, and on
relief to the lower unit.
The necessary
dash to the shift box;
the engine to a knife-disconnect
then down to the lower unit.
shift wire is green and the reverse wire is
blue. An easy way to remember
is
code green for go, forward that is.
TROUBLESHOOTING
In order to prevent unnecessary
work, specific
performed.
logical sequence
pinpoint problems in the lower unit.
1- Check the quantity of lubricant in the
lower unit and top it off,
and
unit will not operate properly if a lubricant
other than OMC Type C is used.
exists
doubt
the lower unit, drain the unit, refill with the
Type C material,
of the shift mechanism.
the quantity of lubricant
observe the material carefully
of water.
under the lower unit, and then remove the
FILL plug and the VENT
lubricant to drain into the container.
AL-
lubr icant drains, catch some with your fin-
gers, from time-to-time,
your thumb and finger to determine
metal particles
detected in the lubricant,
ELECTROMATIC SHIFT
operation
is
When the key
is
wiring routed from the
then to the rear of
The forward
troubleshooting
The following steps present a
of tests and checks
if necessary.
as to the type of lubricant
and then check operation
At the same time
is being checked,
for any sign
Position a suitable
plug.
and rub it between
are present. If metal
the unit must be
8-53
of the shift
in the ON
fitting; and
the color
service
should be
to
The
If any
in
container
Allow the
As the
if any
is