Checking The Engine Idle Speed - Yamaha F15B Service Manual

3. Loosen the locknut 1, remove the clip
2, and then disconnect the shift cable
joint 3.
2
4
cC
The shift/throttle cable joint must be
screwed in a minimum of 8.0 mm (0.31 in) a a .
4. Adjust the position of the shift cable joint
until its hole is aligned with the set pin 4
on the shift lever.
5. Install the clip and then tighten the lock-
nut.
6. Loosen the locknut 5 and adjust the
length of the throttle cable 6 until the
stopper 7 on the pully contacts the stop-
per plate b on the bracket. And then
tighten the locknut.
b 7
6D45F11
3
1
6D430235
6D430236
5
6
6D430228

Checking the engine idle speed

1. Start the engine and warm it up for 5 min-
utes.
2. Attach the special service tool to spark
plug wire #1 1, then check the engine
idle speed. Adjust if out of specification.
Digital tachometer: 90890-06760
Engine idle speed:
900–1,000 r/min
3. Turn the throttle stop screw 2 in direc-
tion a or b until the specified engine idle
speed is obtained.
a
b
NOTE:
9 To increase the idle speed, turn the throttle
stop screw in direction a.
9 To decrease the idle speed, turn the throttle
stop screw in direction b.
4. After adjusting the idle speed, rev the
engine a few times and let it idle for at
least 15 seconds to check the stability of
the engine.
Control system
1
2
1
3
6D430150
4
5
6
7
2
6D430161
8
9
3-10