Yamaha YZF-R125 Service Manual: Cleaning the air filter element
NOTE:
There is a check hose "1" at the bottom of the air filter case. If dust and/or water collects in this hose, clean the air filter element and air filter case.
1. Remove:
- Rider seat Refer to "GENERAL CHASSIS" on page 4-1.
2. Remove:
- Fuel tank Refer to "FUEL TANK" on page 7-1.
3. Remove:
- Air filter case cover "1"
- Air filter element
4. Clean:
- Air filter element "1" Apply compressed air to the outer surface of the air filter element.
5. Check:
- Air filter element
Damage
Replace.
6. Install:
- Air filter element
- Air filter case cover (along with the gaskets)
| CAUTION: Never operate the engine without the air filter element installed. Unfiltered air will cause rapid wear of engine parts and may damage the engine. Operating the engine without the air filter element will also affect throttle body tuning, leading to poor engine performance and possible overheating. |
NOTE:
Make sure the air filter element is properly installed in the air filter case.
7. Install:
- Fuel tank Refer to "FUEL TANK" on page 7-1.
- Rider seat Refer to "GENERAL CHASSIS" on page 4-1.
Adjusting the clutch cable free play
1. Check:
Clutch cable free play "a"
Out of specification Adjust.
2. Adjust:
Clutch cable free play
a. Pull back the rubber cover "1"
b. Loosen the locknut "2".
c. Turn the adjust ...
Checking the throttle body joint and air filter case joint
1. Remove:
Right lower side cowling
Left lower side cowling
Refer to "GENERAL CHASSIS" on page 4-1.
2. Check:
Throttle body joint "1"
Air filter case joint "2"
Cracks/damage Replace ...
Other materials:
Measuring the compression pressure
NOTE:
Insufficient compression pressure will result in a
loss of performance.
1. Measure:
Valve clearance
Out of specification →Adjust.
Refer to "ADJUSTING THE VALVE CLEARANCE"
on page 3-3.
2. Start the engine, warm it up for several minutes,
and then turn it off.
3. Remove:
...
Ecu self-diagnostic function
The ECU is equipped with a self-diagnostic function in order to ensure that
the fuel injection system is
operating normally. If this function detects a malfunction in the system, it
immediately operates the engine
under substitute characteristics and illuminates the engine trouble warning
li ...
Checking the steering
Worn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as follows
at the intervals specified in the periodic
maintenance and lubrication
chart.
Place a stand under the engine to
raise the front wheel off the
ground. WARNING! To ...