Yamaha YZF-R125, Service Manual

Page: 78 / 356

ENGINE
3-5
13.Connect:
• Spark plug cap
14.Install:
• Fuel tank
Refer to “FUEL TANK” on page 7-1.
• Bottom cowling
Refer to “GENERAL CHASSIS” on page 4-1.
EAS20600
ADJUSTING THE EXHAUST GAS VOLUME
NOTE:
Be sure to set the CO density level to standard,
and then adjust the exhaust gas volume.
1. Remove:
• Rider seat
Refer to “GENERAL CHASSIS” on page 4-1.
2. Set the main switch to “OFF”.
3. Disconnect:
• Self-diagnosis signal connector “1”
4. Connect:
• FI diagnostic tool “2”
5. While pressing the “MODE” button “1”, turn
the main switch to “ON”.
NOTE:
• “DIAG” appears on the LCD “2” of the FI diag-
nostic tool.
• “POWER” LED (Green) “3” comes on.
6. Press the “UP” button “4” to select the CO ad-
justment mode “CO” or the diagnostic mode
“DIAG”.
7. After selecting “CO”, press the “MODE” but-
ton.
8. Check that “C1” appears on the LCD of the FI
diagnostic tool, and then press the “MODE”
button.
9. Start the engine.
CAUTION:
ECA5D71023
Perform the adjustment after the battery has
been sufficiently charged.
10.Change the CO adjustment volume by press-
ing the “UP” and “DOWN” buttons.
NOTE:
The CO adjustment volume and engine idling
speed appears on the LCD of the FI diagnostic
tool.
• To decrease the CO adjustment volume, press
the “DOWN” button.
• To increase the CO adjustment volume, press
the “UP” button.
11.Release the “DOWN” and “UP” buttons to ex-
ecute the selection.
12.Set the main switch to “OFF” to cancel the
mode.
13.Disconnect:
• FI diagnostic tool
14.Connect:
• Self-diagnosis signal connector
FI diagnostic tool
90890-03182
4
3
2
1
1
1
2
FI Diagnostic Tool
DIAG
1
2
3
4
FI Diagnostic Tool
1 4 0 0 r p m
C1 : -10
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