Yamaha YZF-R125 Service Manual: 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 diagnostic tool.
- "POWER" LED (Green) "3" comes on.
6. Press the "UP" button "4" to select the CO adjustment mode "CO" or the diagnostic mode "DIAG".
7. After selecting "CO", press the "MODE" button.
8. Check that "C1" appears on the LCD of the FI diagnostic tool, and then press the "MODE" button.
9. Start the engine.
| CAUTION: Perform the adjustment after the battery has been sufficiently charged. |
10.Change the CO adjustment volume by pressing 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 execute the selection.
12.Set the main switch to "OFF" to cancel the mode.
13.Disconnect:
- FI diagnostic tool
14.Connect:
- Self-diagnosis signal connector
15.Install:
- Rider seat Refer to "GENERAL CHASSIS" on page 4-1.
Adjusting the valve clearance
The following procedure applies to all of the
valves.
NOTE:
Valve clearance adjustment should be made
on a cold engine, at room temperature.
When the valve clearance is to be measured or
a ...
Adjusting the engine idling speed
NOTE:
Prior to adjusting the engine idling speed, the air
filter element should be clean, and the engine
should have adequate compression.
1. Start the engine and let it warm up for several
minut ...
Other materials:
Checking the front brake disc
1. Remove:
Front wheel
Refer to "FRONT WHEEL" on page 4-6.
2. Check:
Brake disc
Damage/galling Replace.
3. Measure:
Brake disc deflection
Out of specification Correct the
brake disc
deflection or replace the brake disc.
a. Place the vehicle on a suitable stand ...
Identification
Vehicle identification number
The vehicle identification number "1" is stamped
into the right side of the steering head pipe.
Model label
The model label "1" is affixed to the frame. This
information will be needed to order spare parts.
...
Checking the spark plug
1. Remove:
Right side cover
Refer to "GENERAL CHASSIS" on page 4-1.
2. Disconnect:
Spark plug cap
3. Remove:
Spark plug
CAUTION:Before removing the spark plug, blow away
any dirt accumulated in the spark plug well
with compressed air to prevent it from falling
...