Yamaha F6AMH, Service Manual

Page: 110 / 510

CONTROL SYSTEM
ADJUSTING THE ENGINE IDLING
SPEED
NOTE:
Before adjusting the engine idling speed,
make sure the throttle axle link is
properly adjusted.
Before adjusting the engine idling speed,
warm-up the engine. Correct adjustment
cannot be obtained when the engine is
cold.
1. Measure:
Engine idling speed
Out of specification
Adjust.
Measuring steps:
(1)Start the engine and allow it to warm
up for several minutes.
(2)Attach the engine tachometer
1
to the
spark plug lead 2 of the cylinder #1.
(3)Measure the engine idling speed.
2. Adjust:
Engine idling speed
Adjusting steps:
(1)Turn in the pilot screw 3 in direction
a
until it is lightly seated.
(2)Turn out the pilot screw
3
in direction
b
to specified number of turns.
(3)Turn the pilot screw in direction
a
or
b
, no more than 3/8 of a turn in either
direction, until the engine idling speed
is at its highest.
Engine idling speed:
1,050 ± 50 r/min
Engine tachometer:
YU-8036-B/90890-06760
Pilot screw:
1 – 3/8 turns out
3-10