Adjusting The Engine Idling Speed; Adjusting The Exhaust Gas Volume (For Europe And Oceania) - Yamaha YFM70RY Service Manual

• Front fender
• Seat
Refer to "GENERAL CHASSIS" on page 4-1.
EAS20620

ADJUSTING THE ENGINE IDLING SPEED

1. Start the engine and let it warm up for several
minutes.
2. Install:
• Digital tachometer
(onto the spark plug lead)
3. Check:
• Engine idling speed
Out of specification → Adjust.
Engine idling speed
1500–1700 r/min
4. Adjust:
• Engine idling speed
M MMM M MMM M M MMM M
a. Turn the throttle stop screw "1" in direction "a"
or "b" until the specified engine idling speed is
obtained.
Direction "a"
Engine idling speed is increased.
Direction "b"
Engine idling speed is decreased.
b
L LLL L LLL L L LLL L
5. Adjust:
• Throttle lever free play
Refer to "ADJUSTING THE THROTTLE LE-
VER FREE PLAY" on page 3-7.
Throttle lever free play
2.0–4.0 mm (0.08–0.16 in)
M MMM M M MMM M M MMM M
1
a
L LLL L L LLL L L LLL L
EAS20600
ADJUSTING THE EXHAUST GAS VOLUME
(for Europe and Oceania)
TIP
Be sure to set the CO density level to standard,
and then adjust the exhaust gas volume.
1. Turn the main switch to "OFF" and set the en-
gine stop switch to "ON".
2. Simultaneously press and hold the "SE-
LECT" and "RESET" buttons, turn the main
switch to "ON", and continue to press the but-
tons for 8 seconds or more.
"SELECT"
MMM
"RESET"
TIP
• All displays on the meter disappear.
• "dIAG" appears on the multifunction meter.
3. Press and release the "SELECT" button to
select the CO adjustment mode "Co" "1".
4. After selecting "CO", simultaneously press
LLL
and hold the "SELECT" and "RESET" buttons
for 2 seconds or more to activate the selec-
tion.
5. Check that "C1" "1" appears on the LCD
meter, and then simultaneously press and
hold the "SELECT" and "RESET" buttons for
2 seconds or more.
3-6
ENGINE
1