Synchronizing Throttle Valves - Yamaha F115A Service Manual

INSP
ADJ
2
1
4
CONTROL SYSTEM
2
B P
O
B
P
O
3190
3
2
1
3161
2. Adjust:
• Throttle position sensor
Adjustment steps
(1) Loosen the screws 2.
(2) Adjust the position of the throttle posi-
tion sensor until the specified output
voltage is obtained.
Throttle position sensor output
voltage (pink (P) – black (B))
0.732 ± 0.014 V
General adjusting tool
Torx T-20 (with a concave in the center)
(3) Tighten the screws.
(4) Connect the throttle joint link rod 1.
SYNCHRONIZING THE THROTTLE
VALVES
CAUTION:
Do not adjust the throttle valve when it is
operating properly. Excess adjustment may
cause poor engine performance.
Adjustment steps
(1) Remove all of the blind plugs 1.
(2) Connect the adaptors 2 and vacuum
gauge 3 to the intake manifold assem-
bly as shown.
Vacuum gauge set
YU-08030 / 90890-03094
(3) Start the engine and allow it to warm
up for several minutes.
(4) Connect the tachometer to the spark
plug lead of cylinder #1.
Tachometer
YU-08036-A / 90890-06760
Engine idling speed
750 ± 50 r/min
3-8
E
3