Evinrude 4906B 4HP 1969 Owner's Manual page 314

4- Battery Check:
ough check of the battery.
gravity of the electrolyte
withdrawing only enough to lift the float.
Take the reading at eye level.
charged battery cell should read 1.280;
half-charge, 1.210; and a dead battery
read only 1.150. If the electrolyte
low, bring it up to full level with clean clear
water. NEVER ADD ACID to a battery
cell. If water is added, it is not possible to
take an accurate reading until the battery
has been charged for a few hours.
5- Battery Voltage:
battery voltage for a full 12 volts.
any corrosion from on or around the cables
and terminals. Remove the cables,
the posts until bright
Scrape out the inside of the battery
nals, then connect and tighten them secure-
ly.
6- Amperage Draw
ignition switch to the
serve the amperage
am meter. If an amm eter is not installed on
the dash, one must be temporarily
ed to the system
removing the wire marked BAT from the key
switch, and then connecting the ammeter
Begin with a thor-
Measure the
in each cell by
A fully
level is
Check the total
Clean
clean
metal is visible.
termi-
Check: Turn the
position and ob-
ON
reading on the dash
connect-
for this test by first
at
will
ser ies with this wire and 'the key switch
terminal marked BAT.
Check the current
exceeds 2.5 amps in either gear, disconnect
the shift wires at the shift wire disconnects
on the port side of the engine.
check the current
than 2.5 amps indicates a short in the wir-
ing; in the shift switch;
If the readings are within acceptable
reconnect
shift the unit into forward and then reverse
gear. Cheek the eu rrent draw in each gear.
A high-amp draw, indicates a shorted wire
to the lower unit, or a short in one of the
coils.
/\. broken dr iveshaf t from the nowerhead
to the lower unit indicates both forward and
reverse gears were energized
in
time. Check the shift box, shift switch, and
the wiring to the lower unit.
7- Defective Wiring Check:
wire marked BAT disconnected
switch for this test.
ELECTROMATIC SHIFT
draw.
draw. A higher reading
or in the shift box.
the shift wires at the engine,
Check
8-55
If the draw
Again,
limits,
at the same
Leave the
from the key
the wiring