Adjusting The Exhaust Gas Volume - Yamaha 2004 YP400 Service Manual

ADJUSTING THE VALVE CLEARANCE/

ADJUSTING THE EXHAUST GAS VOLUME

7. Install:
• all removed parts
Refer to "CYLINDER HEAD" in chapter 5.
NOTE:
_
For installation, reverse the removal proce-
dure. Note the following points.
EAS00869
ADJUSTING THE EXHAUST GAS VOLUME
NOTE:
_
Be sure to set the CO density level to stan-
dard, and then adjust the exhaust gas volume.
1. Turn the main switch to "OFF" and set the
engine stop switch to "ON".
2. Simultaneously
"SELECT" and "RESET" buttons, turn the
main switch to "ON", and continue to press
the buttons for 8 seconds or more.
NOTE:
_
• All displays on the meter disappear except
the odometer displays.
• "dIAG" appears on the odometer LCD.
3. Press the "SELECT" button to select the CO
adjustment mode "CO" or the diagnostic
mode "dIAG".
4. After selecting "CO", simultaneously press
the "SELECT" and "RESET" buttons for 2
seconds or more to execute the selection.
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CHK
ADJ
press and hold the