COOLING
SYSTEM
Water for cooling purposes is provided by action of
the single stage rubber impeller centrifugal pump
located between the upper and lower housing of the
lower unit. This functions as a displacement pump
at slow motor speeds and as a centrifugal pump
during operation in the higher speed range. There
are two water inlets in the gear case. During FOR-
WARD operation of the motor, water enters the slot,
equipped with a screen, located direcilv beiow ex-
haust outlet, and is forced through the cooling sys-
tem, Iater to be discharged at the ouilet in the ex-
haust'tube provided for this purpose. Water enters
the cooling system through the holes in the '.rater
bypass cover above the anti-cavitation plate when
operating in REVERSE.
NOTE
If, while operating motor at full speed, it
should show signs of slowing down, imnedi-
ately check water discharge at water outlet
(Figure 8) located at rear of the motor di-
rectly below cylinder. In case no water is
being discharged, immediately shut olf the
motor and check water inlet (Figure 8) for
obstruction. If no obstruction is found, it
may indicate worn pump parts.
CARE
OFMOTOR
IN
COLDWEATHER
The motor will not freeze while in use, but when it
is idle, water in the cylinders or pump might freeze
and damage the motor. Drain by setting the motor
in an upright position and pulling starter cord sev-
eral times with throttle control in STOp position.
If the moto!' is to be stored during cold weather,
be sure that no water is left in the motor or it mav
freeze. (See"Preparation for Storage.")
SALT
WATER
INSTRUCTI
ONS
This motor is designed for use in either fresh or
salt water and through the use of various materials
and finishes has been made as resistant to salt
water corrosion as is possible. A little time spent
in caring for your motor when used in salt water
will aid in not only keeping it in good running order
but help in retaining its finish and appearance.
Tilt the motor out of the water when it is not in use.
At the end of the day or when not using the motor
for a period of time it is advisable to remove it
from the boat and to flush it by running it in a tank
of fresh water. Wipe the motor dry and go over all
parts with an oily cloth. This should be done as soon
as possible after removing the motor from the boat.
RUNNING
MOIOR
INTEST
TANK
1. Donot run motor outof water.
2. Donot "break-in" motor in tank.
3. Remove water bypasscover (item 39, page 1g).
4. When running in tank be sure gear housingand
,l
(ore
o[
your
frlotor
propeller
are submerged.
5. Do not race motor in tank.
6. Use test propeller when testing motor in tank.
Cavitation (air pocket around propeller) may occur
when operating motor in tank with regular propel-
Ier. Motor will then not perform properly or it
may race andbedamaged
as a result.
PREPARATION
FOR
STORAGE
No outboard motor should be placed in storage with-
out considering the necessary precautions. If motor
is operated in salt water, flush by running in a tank
of fresh water. Drain and refill gear case with the
proper lubricant. Seepage 5.
Prior to storing the motor, run it for about one-half
(1/2) minute in choke position. Shut off motor with-
out pushing choke back to normal position. Purpose
of this operation is to flood the inner parts of the
powerhead with oil (oil in fuel mixture) while in
storage.
Drain all water from the cooling system. See "Care
of Motor in CoId Weather."
Drain all fuel from fuel tank, gas line and carbure-
tor.
Under no circumstances should the motor be stored
in an inverted position. It should be hung on a rack
similar to the manner in which it is mounted on the
boat. Store in a dry place. Wrap the moror ln a
piece of canvas, old blanket, or heavy paper.
PUTTING
MOTOR
INUSE
AFI'ER
STORAGE
Pull off spark plug leads and remove spark plugs.
If rubber spark plug hoods have been removed from
ignition leads, be sure to ground leads to some part
of motor to prevent possibility of spark. (THIS IS
IMPORTANT.) Spin motor by pulling on starter
cord to remove excess oil from cylinders. CIean
spark plugs, check gap and replace. Install new
plugs if they are cracked, broken, or badly burned.
Tighten all screws and nuts. Check adjustments
such as tilting friction, co-pilot, and carburetor
knobs.
MOTORS
THAT
HAVE
BEEN
SUBMERGED
Precaution should be taken to prevent a motor going
overboard (see page 1). However, if a motor has
been submerged, recover as quickly as possible.
Since the motor is temporarily out of working order,
do not attempt to operate it until the following pro-
cedure has been used to restore it to service.
1. Remove air silencer and dry out.
2. Remove plug at tnttom of carburetor float cham-
ber (item 9, Figure 12) thereby draining I _rter and
fuel from carburetor. Replace plug.
3. Remove and dry spark plugs. lf rubber spark
