Yamaha 2A - Adjusting Idling Speed

4-14
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EMU01002
ADJUSTING IDLING SPEED
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8 Do not touch or remove electrical parts
when starting or during operation.
8 Keep hands, hair and clothes away
from flywheel and other rotating parts
while engine is running.
8 2-hp model: Do not move the throttle
control lever from the start position
during warm-up. The propeller rotates
whenever the engine is running. The
boat could unexpectedly start to move
which could result in an accident.
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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.
2-hp model: Warm the engine with
the throttle in the Start position or
less. 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
(refer to “SPECIFICATIONS”, page 4-
1) by turning the stop-screw clock-
wise to increase the idling speed, and
turning it counterclockwise to
decrease the idling speed.
204033*
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204035*
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204036*
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