Yamaha YZF-R125 Service Manual: Checking the rear wheel
1. Check:
- Rear wheel axle
- Rear wheel
- Wheel bearings
- Oil seals Refer to "CHECKING THE FRONT WHEEL" on page 4-8.
2. Check:
- Tire
- Rear wheel Damage/wear → Replace.
Refer to "CHECKING THE TIRES" on page 3-23 and "CHECKING THE WHEELS" on page 3-25.
3. Measure:
- Radial wheel runout
- Lateral wheel runout
Refer to "CHECKING THE FRONT WHEEL"
on page 4-8.
Checking the rear brake caliper bracket
1. Check:
- Rear brake caliper bracket Cracks/damage → Replace.
Checking the rear wheel drive hub
1. Check:
- Rear wheel drive hub Cracks/damage → Replace.
- Rear wheel drive hub dampers Damage/wear → Replace.
Removing the rear wheel (disc)
1. Stand the vehicle on a level surface.
WARNINGSecurely support the vehicle
so that there is
no danger of it falling over.
2. Elevate:
Rear wheel
NOTE:
Place the vehicle ...
Checking and replacing the rear wheel sprocket
1. Check:
Rear wheel sprocket
More than 1/4 tooth "a" wear
Replace the
rear wheel sprocket.
Bent teeth Replace the rear
wheel sprocket.
b. Correct
1. Drive chain roller
2. ...
Other materials:
Assembling the front fork legs
The following procedure applies to both of the
front fork legs.
WARNING
Make sure the oil levels in both front fork
legs are equal.
Uneven oil levels can result in poor handling
and a loss of stability.
NOTE:
When assembling the front fork leg, be sure to
rep ...
Checking the cylinder and piston
1. Check:
Piston wall
Cylinder wall
Vertical scratches Replace the
cylinder,
and replace the piston and piston rings as a
set.
2. Measure:
Piston-to-cylinder clearance
a. Measure cylinder bore "C" with the cylinder
bore gauge.
NOTE:
Measure cylinder bore "C" by takin ...
Protective apparel
The majority of fatalities from motorcycle
accidents are the result of head injuries.
The use of a safety helmet is the
single most critical factor in the prevention
or reduction of head injuries.
Always wear an approved helmet.
Wear a face shield or goggles.
Wind in your unprotecte ...