Yamaha 8A Owner's Manual download pdf (Page 28)

23

Installation

EMU26902

Installation

The information presented in this section is

intended as reference only. It is not possible

to provide complete instructions for every

possible boat and motor combination. Prop-

er mounting depends in part on experience

and the specific boat and motor combination.

WARNING

EWM01590

●

Overpowering a boat could cause se-

vere instability. Do not install an out-

board motor with more horsepower

than the maximum rating on the capac-

ity plate of the boat. If the boat does not

have a capacity plate, consult the boat

manufacturer.

●

Improper mounting of the outboard mo-

tor could result in hazardous condi-

tions such as poor handling, loss of

control, or fire hazards. For permanent-

ly mounted models, your dealer or oth-

er person experienced in proper

rigging should mount the motor.

EMU26911

Mounting the outboard motor

WARNING

EWM01720

Your dealer or other person experienced

in proper outboard motor mounting

should show you how to mount your out-

board motor.

The outboard motor should be mounted so

that the boat is well balanced. Otherwise, the

boat could be hard to steer. For single-en-

gine boats, mount the outboard motor on the

centerline (keel line) of the boat.

EMU26923

Mounting height

To run your boat at optimum efficiency, the

water resistance (drag) of the boat and out-

board motor must be made as little as possi-

ble. The mounting height of the outboard

motor greatly affects the water resistance. If

the mounting height is too high, cavitation

tends to occur, thus reducing the propulsion;

and if the propeller tips cut the air, the engine

speed will rise abnormally and cause the en-

gine to overheat. If the mounting height is too

low, the water resistance will increase and

thereby reduce engine efficiency. Mount the

outboard motor so that the anti-cavitation

plate is between the bottom of the boat and

a level 25 mm (1 in) below it.

1. Center line (keel line)

ZMU01760

1

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 71 72

Comments to this Manuals

No comments