Installation Requirements; Boat Horsepower Rating; Mounting Motor; Propeller Selection - Yamaha 6c Owner's Manual

Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
0.160 L (0.169 US qt, 0.141 Imp.qt)
Tightening torque for engine:
Spark plug:
25.0 Nm (2.55 kgf-m, 18.4 ft-lb)
Propeller nut:
17.0 Nm (1.73 kgf-m, 12.5 ft-lb)
EMU33553

Installation requirements

EMU33563

Boat horsepower rating

EWM01560
WARNING
Overpowering a boat can cause severe
instability.
Before installing the outboard motor(s), con-
firm that the total horsepower of your mo-
tor(s) does not exceed the boats maximum
horsepower rating. See the boat's capacity
plate or contact the manufacturer.
EMU33571

Mounting motor

EWM01570
WARNING
Improper mounting of the outboard mo-
●
tor could result in hazardous condi-
tions such as poor handling, loss of
control, or fire hazards.
Because the motor is very heavy, spe-
●
cial equipment and training is required
to mount it safely.
Your dealer or other person experienced in
proper rigging should mount the motor using
correct equipment and complete rigging in-
structions. For further information, see page
20.
EMU34191

Propeller selection

Next to selecting an outboard, choosing the
Specifications and requirements
right propeller is one of the most important
purchasing decisions a boater can make.
The type, size, and design of your propeller
have a direct impact on acceleration, top
speed, fuel economy, and even engine life.
Yamaha designs and manufactures propel-
lers for every Yamaha outboard motor and
every application.
Your outboard motor came with a Yamaha
propeller chosen to perform well over a
range of applications, but there may be uses
where a different propeller would be more
appropriate.
Your Yamaha dealer can help you select the
right propeller for your boating needs. Select
a propeller that will allow the engine to reach
the middle or upper half of the operating
range at full throttle with the maximum boat-
load. Generally, chose a larger pitch propel-
ler for a smaller operating load and a smaller
pitch propeller for a heavier load. If you carry
loads that vary widely, chose the propeller
that lets the engine run in the proper range
for your maximum load but remember that
you may need to reduce your throttle setting
to stay within the recommended engine
speed range when carrying lighter loads.
For instructions on propeller removal and in-
stallation, see page 48.
1. Propeller diameter in inches
2. Propeller pitch in inches
x
-
1 2 3
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10