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:
Removing the crankshaft
1. Remove:
Crankshaft "1"
NOTE:
Remove the crankshaft with the crankcase
separating tool "2".
Make sure the crankcase separating tool is
centered over the crankshaft.
CAUTION:
To protect the end of the crankshaft, place
an appropriate sized socket between the
c ...
Checking the timing chain tensioner
1. Check:
Timing chain tensioner
Cracks/damage/rough movement Replace.
a. Lightly press the timing chain tensioner rod
into the timing chain tensioner housing by
hand.
NOTE:
While pressing the timing chain tensioner rod,
wind it clockwise with a thin screwdriver "1" until
it stops.
b. ...
Removing the generator
1. Remove:
Generator rotor nut "1"
Washer
NOTE:
While holding the generator rotor "2" with the
sheave holder "3", loosen the generator rotor
nut.
Do not allow the sheave holder to touch the
projection on the generator rotor.
2. Remove:
Generator rotor "1"
(with the ...