Yamaha YZF-R125 Service Manual: Lubrication diagrams
- Clutch push lever
- Main axle
- Drive axle
- Crankshaft
- Oil filter
- Oil pump assembly
- Oil strainer
- To cylinder head
- Camshaft
- Crankshaft
- Main axle
- Drive axle
Engine oil lubrication chart
Oil pump
Oil filter element
Crankshaft
Camshaft
Main axle
Drive axle
...
Cooling system diagrams
Radiator inlet hose
Coolant reservoir hose
Radiator cap
Radiator
Coolant reservoir breather hose
Coolant reservoir
Water pump breather hose
Water pump
Radiator outlet hose
...
Other materials:
Checking the rear brake disc
1. Remove:
Rear wheel
Refer to "REAR WHEEL" on page 4-12.
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.
Refer to "CHECKING THE FRONT BRAKE
DIS ...
Starting failures
Engine
1. Cylinder and cylinder head
- Loose spark plug
- Loose cylinder head or cylinder
- Damaged cylinder head gasket
- Damaged cylinder gasket
- Worn or damaged cylinder
- Incorrect valve clearance
- Improperly sealed valve
- Incorrect valve-to-valve-seat contact
- Incorrect valve timi ...
Intake air pressure sensor
1. Check:
Intake air pressure sensor output voltage
Out of specification Replace the throttle
body.
a. Connect the pocket tester (DC 20 V) to the
throttle body sensor assembly coupler as
shown.
Positive tester probe
pink/white "1"
Negative tester probe
gray/black "2"
...