Yamaha YZF-R125 Service Manual: Checking the drive sprocket
1. Check:
- Drive sprocket
More than 1/4 tooth "a" wear
Replace the drive chain sprockets as a set.Bent teeth
Replace the drive
chain sprockets as a set.
b. Correct
1. Drive chain roller
2. Drive chain sprocket
Checking the rear wheel sprocket
Refer to "CHECKING AND REPLACING THE REAR WHEEL SPROCKET" on page 4-15.
Checking the rear wheel drive hub
Refer to "CHECKING THE REAR WHEEL DRIVE HUB" on page 4-15.
Checking the drive chain
1. Measure:
15-link section "a" of the drive chain
Out of specification Replace the drive
chain.
a. Measure the length "a" between the inner
sides of the pins and the length "b" between
t ...
Installing the drive chain
1. Lubricate:
Drive chain
Master link
2. Install:
Drive sprocket
Drive sprocket retainer bolts
3. Install:
Master link
O-rings
Master link plate
Master link clip "1"
...
Other materials:
Checking the tires
The following procedure applies to both of the
tires.
1. Check:
Tire pressure
Out of specification Regulate.
WARNING
The tire pressure should only be checked
and regulated when the tire temperature
equals the ambient air temperature.
The tire pressure must be adjuste ...
Checking and lubricating the cables
The operation of all control cables and
the condition of the cables should be
checked before each ride, and the cables
and cable ends should be lubricated
if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the out ...
Cleaning and lubricating the drive chain
The drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrication
chart, otherwise it will quickly wear
out, especially when riding in dusty or
wet areas. Service the drive chain as
follows.
NOTICE
The drive chain must be lubricated
...