Checking The Engine Idle Speed; Adjusting The Throttle Cable - Yamaha E115A Service Manual

8. Tighten the throttle lever tightening screw
4 counterclockwise on the lower carbu-
retor.
NOTE:
The screw 4 is left hand thread.
9. Make sure the throttle valves are open
and close simultaneously.
10. Install the throttle cable and intake
silencer.
NOTE:
After synchronizing the carburetor, start the
engine and check the engine idle speed to
adjust the throttle stop screw.

Checking the engine idle speed

NOTE:
Before checking the engine idle speed, the
pilot screws should be properly adjusted.
1. Attach the special service tool 1 to the
spark plug wire #1 2.
Digital tachometer 1: 90890-06760
2. Start the engine and warm it up for 5 min-
utes, and then check the engine idle
speed. Adjust if out of specification.
2
Engine idle speed:
700–800 r/min
NOTE:
Verify the stability of the engine idle speed.
61U5H11
3. Turn the throttle stop screw 3 in direc-
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. If the specified engine idle speed cannot
NOTE:
When adjust the pilot screws, adjust it in the
all of cylinders.

Adjusting the throttle cable

NOTE:
Before adjusting the throttle cable, the throt-
tle stop screw should be properly adjusted.
1. Loosen the locknut 1, remove the nut 2
1
3
61U30040
2
tion a or b until the specified engine idle
speed is obtained.
3
a
b
be obtained, adjust the pilot screws.
and then remove the throttle cable joint
3.
1
Control system
1
2
61U30220
3
4
5
6
7
8
9
61U30080
3-6