E

EMU00991

ADJUSTING IDLING SPEED

w

8Do not touch or remove electrical parts when starting or during operation.

8Keep hands, hair and clothes away from flywheel and other rotating parts while engine is running.

cC

This procedure must be performed while the outboard motor is in the water. A flushing attachment or test tank can be used.

A diagnostic tachometer should be used for this procedure.

1) Start the engine and allow it to warm

 

 

up fully in Neutral until it is running

 

 

smoothly. If the outboard is mounted

 

 

on a boat, be sure the boat is tightly

 

 

 

 

moored.

2)

Adjust the throttle stop-screw 1 to

 

 

set the idling speed to specification

 

 

(see “SPECIFICATIONS” on page 4-1)

 

 

by turning the stop-screw clockwise

 

 

to increase the idling speed, and turn-

q

ing it counterclockwise to decrease

F1045

the idling speed.

NOTE:

Correct idling-speed adjustment is only possible if the engine is fully warmed-up. If not warmed up fully, the speed setting will tend to be too high. If you have difficulty obtaining the specified idle, consult a Yamaha dealer or other qualified mechanic.

4-16