CONTROL SYSTEM
3-9
E
CHK
ADJ
SYNCHRONIZING THE CARBURETOR
CAUTION:
Do not adjust the carburetor when it is
operating properly. Excess adjustment may
cause the engine poor performance.
1. Check:
•
Engine idling speed
Unstable
→
Adjust.
2. Adjust:
•
Carburetor synchronization
Adjustment steps
(1) Remove all of the plugs
.
(2) Install the adaptors
and vacuum
gauge
onto the intake manifold as
shown.
(3) Start the engine and allow it to warm
up for several minutes.
(4) Install the tachometer onto the spark
plug lead of cylinder #1.
(5) Adjust the engine speed to 900 r/min by
turning the throttle stop screw
on
carburetor #3 in direction
or
.
(6) Measure the vacuum pressure of carbu-
retor #3.
1
3
1
2
Vacuum gauge set
YU-08030/90890-03159
Tachometer
YU-08036-A/90890-06760
D
D
D
Diiiirrrre
e
e
ec
c
c
cttttiiiio
o
o
on
n
n
n
Engine speed increases.
D
D
D
Diiiirrrre
e
e
ec
c
c
cttttiiiio
o
o
on
n
n
n
Engine speed decreases.
1
2
3
4
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 ...
Страница 528: ......
Страница 529: ......
Страница 536: ......
Страница 537: ...Printed on recycled paper Printed in Japan Sep 1999 1 7 1 F40B YAMAHA MOTOR CO LTD ...