Yamaha YP125R, Service Manual

Page: 150 / 498

ENGINE (YP250R)
3-23
EAS20600
ADJUSTING THE EXHAUST GAS VOLUME
TIP
Be sure to set the CO density level to standard,
and then adjust the exhaust gas volume.
1. Remove:
• Upper panel
Refer to “GENERAL CHASSIS” on page 4-1.
2. Set the main switch to “OFF”.
3. Disconnect:
• Self-diagnosis signal coupler
4. Connect:
• FI diagnostic tool “1”
5. While pressing the “MODE” button “1”, set
the main switch to “ON”.
TIP
• “DIAG” appears on the LCD “2” of the FI diag-
nostic tool.
• “POWER” LED (Green) “3” comes on.
6. Press the “UP” button to select the CO adjust-
ment mode “CO” or the diagnostic mode “DI-
AG”.
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.
NOTICE
ECA37P1015
Perform the adjustment after the battery has
been sufficiently charged.
10.Change the CO adjustment volume by press-
ing the “UP” and “DOWN” buttons.
TIP
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 coupler
15.Install:
• Upper panel
Refer to “GENERAL CHASSIS” on page 4-1.
EAS20640
ADJUSTING THE THROTTLE CABLE FREE
PLAY
1. Check:
• Throttle cable free play “a”
Out of specification
→
Adjust.
FI diagnostic tool
90890-03182
1
FI Diagnostic Tool
DIAG
1
2
3
FI Diagnostic Tool
1 5 5 0 r p m
C1 : -10