CHK
ADJ
3-5
CONTROL SYSTEM
E
ADJUSTING THE ENGINE IDLING
SPEED
NOTE:
The engine should be warmed up for the
adjustment.
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 a few minutes.
(2) Install the tachometer onto the spark
plug lead of cylinder #1.
2. Adjust:
•
Engine idling speed
Adjustment steps
(1) Turn the throttle stop screw
in direc-
tion
or
until the specified engine
idling speed is obtained.
(2) Check the engine idling stability. If
engine idling is unstable, adjust the
pilot screw and synchronize the carbu-
retors.
NOTE:
Rev the engine two or three times and keep
it idling for at least 15 seconds after adjust-
ment to check the engine’s stability.
Engine idling speed
850±50 r/min
Tachometer
YU-08036-A/90890-06760
1
b
a
Direction
Engine idling speed
increases.
Direction
Engine idling speed
decreases.
1
a
b
a
b
Содержание F40BMHD
Страница 60: ...SPEC 2 12 MAINTENANCE SPECIFICATIONS E DIMENSIONS H9 L3 L7 L6 L2 L1 H2 H1 H7 H4 H3 H8 H6 W5 W6 W1 L4 A1 A3 A2 ...
Страница 126: ...GENERAL 3 25 E CHK ADJ LUBRICATION POINTS Apply Water resistant grease ...
Страница 128: ...CHK ADJ 3 26 GENERAL E ...
Страница 129: ...3 26 CHK ADJ F D ES ...
Страница 272: ...E LOWR BACKLASH 6 34 MEASURING THE FORWARD GEAR BACKLASH 6 34 MEASURING THE REVERSE GEAR BACKLASH 6 36 ...
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Страница 537: ...Printed on recycled paper Printed in Japan Sep 1999 1 7 1 F40B YAMAHA MOTOR CO LTD ...