2021 YAMAHA XSR 125 transmission

Operation and important ri din g points
5-4
5
4. Once the motorcycle has
stopped, the transmission can be
shifted into the neutral position.
The neutral indicator light should
come on and then the clutch lever
can be released.
WARNING
EWA17380
Improper brakin g can cause
loss of control or traction. Al-
ways use both brakes an d apply
them smoothly.
 Make sure that the motorcycle
and the en gine have sufficiently
slowe d b efore shiftin g to a low-
er gear. En gag in g a lower gear
when the vehicle or en gine
spee d is too hi gh coul d make
the rear wheel lose traction or
the en gine to over-rev. This
coul d cause loss of control, an
acci dent an d injury. It coul d also
cause en gine or d rive train dam-
a g e.
EAU16811
Tips for re ducin g fuel con-
sumptionFuel consumption depends largely on
your riding style. Consider the follow-
ing tips to reduce fuel consumption:
 Shift up swiftly, and avoid high en-
gine speeds during acceleration.
 Do not rev the engine while shift-
ing down, and avoid high engine
speeds with no load on the en-
gine.
 Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at traf-
fic lights or at railroad crossings).
EAU17214
Parkin gWhen parking, stop the engine, and
then remove the key from the main
switch.
WARNING
EWA10312
Since the en gine an d exhaust
system can become very hot,
park in a place where pe destri-
ans or chil dren are not likely to
touch them and b e burne d.
 Do not park on a slope or on soft
groun d, otherwise the vehicle
may overturn, increasin g the
risk of a fuel leak an d fire.
 Do not park near grass or other
flammab le materials which
mi ght catch fire.
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Periodic maintenance an d a djustment
6-23
6 fluid level goes down suddenly, have a
Yamaha dealer check the cause before further riding.
EAU22734
Chan gin g the brake flui dHave a Yamaha dealer change the
brake fluid every 2 years. In addition,
have the seals of the master cylinders
and brake calipers, as well as the brake
hoses replaced at the intervals listed
below or sooner if they are damaged or
leaking.
 Brake seals: every 2 years
 Brake hoses: every 4 years
EAU22762
Drive chain slackThe drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU74253
To check the drive chain slack
1. Place the motorcycle on the side- stand.TIPWhen checking and adjusting the drive
chain slack, there should be no weight
on the motorcycle.2. Shift the transmission into theneutral position.
3. Measure the drive chain slack as shown.1. Drive chain slackZAUM2041
1
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Index
10-2
10
Tires ...................................................... 6-16
Tool kit .................................................... 6-2
Transmission gear display ...................... 3-6
Troubleshooting .................................... 6-33
Troubleshooting chart........................... 6-35
Turn signal indicator light ....................... 3-2
Turn signal light bulb, replacing............ 6-32
Turn signal switch ................................. 3-10VValve clearance..................................... 6-16
Vehicle identification number ................. 9-1
Vehicle lights ......................................... 6-32
VVA indicator .......................................... 3-5WWheel bearings, checking..................... 6-29
Wheels .................................................. 6-18YYamalube .............................................. 6-12
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