2021 YAMAHA XSR 125 fuel

Table of contentsSafety information ............................ 1-1
Description ....................................... 2-1
Left view ......................................... 2-1
Right view ....................................... 2-2
Controls and instruments ............... 2-3
Instrument an d control functions ... 3-1
Main switch/steering lock............... 3-1
Indicator lights and warning lights............................................ 3-2
Multi-function meter unit ................ 3-4
Handlebar switches ........................ 3-9
Clutch lever .................................. 3-10
Shift pedal .................................... 3-11
Brake lever.................................... 3-11
Brake pedal .................................. 3-11
ABS .............................................. 3-12
Fuel tank cap ................................ 3-13
Fuel ............................................... 3-13
Fuel tank breather hose and overflow hose ............................ 3-15
Catalytic converter ....................... 3-16
Seat .............................................. 3-16
Helmet holder ............................... 3-17
Sidestand ..................................... 3-17
Ignition circuit cut-off system ....... 3-18 For your safety – pre-operation
checks
............................................... 4-1
Operation an d important ri din g
points ................................................. 5-1
Engine break-in ............................... 5-1
Starting the engine .......................... 5-2
Shifting ............................................ 5-3
Tips for reducing fuel consumption ................................ 5-4
Parking ............................................ 5-4
Perio dic maintenance an d
a d justment ........................................ 6-1
Tool kit ............................................ 6-2
Periodic maintenance chart for the emission control system .............. 6-3
General maintenance and lubrication chart ........................... 6-4
Removing and installing cowlings... 6-8
Checking the spark plug ................. 6-8
Canister ........................................... 6-9
Engine oil and oil filter element ..... 6-10
Why Yamalube .............................. 6-12
Coolant.......................................... 6-13
Replacing the air filter element
and cleaning the check hose..... 6-14
Adjusting the engine idling speed ......................................... 6-15
Adjusting the throttle grip free play ............................................ 6-15 Valve clearance............................. 6-16
Tires .............................................. 6-16
Cast wheels .................................. 6-18
Adjusting the clutch lever free
play ............................................ 6-18
Checking the front brake lever free play..................................... 6-19
Adjusting the brake pedal free
play ............................................ 6-20
Brake light switches ..................... 6-21
Checking the front and rear brake pads ................................ 6-21
Checking the brake fluid level ...... 6-22
Changing the brake fluid .............. 6-23
Drive chain slack........................... 6-23
Cleaning and lubricating the drive chain ................................. 6-25
Checking and lubricating the cables ........................................ 6-25
Checking and lubricating the
throttle grip and cable ............... 6-26
Checking and lubricating the brake and shift pedals............... 6-26
Checking and lubricating the brake and clutch levers ............. 6-27
Checking and lubricating the
sidestand................................... 6-27
Lubricating the rear suspension ... 6-28
Lubricating the swingarm pivots......................................... 6-28
Checking the front fork ................. 6-28UBFGE0E0.book Page 1 Friday, April 9, 2021 9:25 AM

Safety information
1-5
1operator and may limit control
ability, therefore, such accesso-
ries are not recommended.
 Use caution when adding electri-
cal accessories. If electrical ac-
cessories exceed the capacity of
the motorcycle’s electrical sys-
tem, an electric failure could re-
sult, which could cause a
dangerous loss of lights or engine
power.
Aftermarket Tires an d Rims
The tires and rims that came with your
motorcycle were designed to match
the performance capabilities and to
provide the best combination of han-
dling, braking, and comfort. Other
tires, rims, sizes, and combinations
may not be appropriate. See page 6-16
for tire specifications and for informa-
tion on servicing and replacing your
tires.
Transportin g the Motorcycle
Be sure to observe following instruc-
tions before transporting the motorcy-
cle in another vehicle. 
Remove all loose items from the
motorcycle.
 Check that the fuel cock (if
equipped) is in the off position and
that there are no fuel leaks.
 Shift the transmission into gear
(for models with a manual trans-
mission).
 Secure the motorcycle with tie-
downs or suitable straps that are
attached to solid parts of the mo-
torcycle, such as the frame or up-
per front fork triple clamp (and not,
for example, to rubber-mounted
handlebars or turn signals, or
parts that could break). Choose
the location for the straps carefully
so the straps will not rub against
painted surfaces during transport.
 The suspension should be com-
pressed somewhat by the tie-
downs, if possible, so that the mo-
torcycle will not bounce exces-
sively during transport.
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Description
2-1
2
EAU10411
Left view
123456789
10
1. Fuel tank cap (page 3-13)
2. Seat lock (page 3-16)
3. Battery (page 6-30)
4. Fuses (page 6-31)
5. Tool kit (page 6-2)
6. Sidestand (page 3-17)
7. Air filter check hose
8. Shift pedal (page 3-11) 9. Idle adjusting screw (page 6-15)
10.Coolant reservoir (page 6-13)
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Instrument and control functions
3-4
3

Have a Yamaha dealer check
the vehicle as soon as possi ble.
EAU87111
Multi-function meter unitThe multi-function meter unit is also
equipped with a backlight setting mo-
de.
WARNING
EWA12423
Be sure to stop the vehicle before
makin g any settin g chan ges to the
multi-function meter unit. Chan gin g settin
gs while ri din g can d istract the
operator an d increase the risk of an
acci dent.
EAU89230
Switchin g the display units
The display units can be switched be-
tween kilometers and miles.
To switch the display units1. Turn the vehicle off.
2. While pushing the “SEL” switch, turn the vehicle on.
3. Continue to push the “SEL” switch for at least 5 seconds.
EAU86831
Speed ometer
1. Transmission gear display
2. VVA (variable valve actuation) indicator
3. “RESET” button
4. Multi-function display
5. Fuel meter
6. “SELECT” button
7. Speedometer
8. TachometerZAUM2013
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3
4
5
6
78
2
1. SpeedometerZAUM2014
1
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Instrument and control functions
3-5
3 The speedometer shows the vehicle’s
traveling speed.
EAU87170
Tachometer
The tachometer allows the rider to
monitor the engine speed and keep it
within the ideal power range.NOTICE
ECA10032
Do not operate the en
gine in the ta-
chometer red zone.
Re d zone: 11000 r/min an d a bove
EAU86841
Fuel meter
The fuel meter indicates the amount of
fuel in the fuel tank. The display seg-
ments of the fuel meter disappear from
“F” (full) towards “E” (empty) as the fuel
level decreases. When approximately
3.0 L (0.79 US gal, 0.66 Imp.gal) of fuel
remains, the last segment starts flash-
ing. Refuel as soon as possible.TIPIf a problem is detected in the electrical
circuit, the fuel level segments will flash
repeatedly. If this occurs, have a
Yamaha dealer check the vehicle.
EAU87370
VVA in dicator
This model is equipped with variable
valve actuation (VVA) for good fuel
economy and acceleration in both the
low-speed and high-speed ranges.
The VVA indicator comes on when the
variable valve actuation system has
switched to the high-speed range.
1. Tachometer
2. Red zoneZAUM2015
1 2
1. Fuel meterZAUM2016
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1. VVA (variable valve actuation) indicatorZAUM2017
1
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Instrument and control functions
3-6
3
EAU87391
Transmission gear display
This display shows the selected gear.
The neutral position is indicated by “–”
and by the neutral indicator light.
EAUU2212
Multi-function display
The multi-function display is equipped
with the following:  an odometer (ODO)
 two tripmeters (TRIP 1 and TRIP 2)
 a fuel reserve tripmeter (TRIP F)
 a clock
 an instantaneous fuel consump-
tion display (km/L or L/100 km)
 an average fuel consumption dis-
play (AVE_ _._ km/L or AVE_ _._
L/100 km)
 an average speed display (AVE_
_._ km/h)
 a backlight display (bL-01, bL-02
or bL-03) Push the “SELECT” button to change
the display in the following order:
ODO →
TRIP 1 → TRIP 2 → TRIP F →
clock → km/L or L/100 km → AVE_ _._
km/L or AVE_ _._ L/100 km → AVE_ _._
km/h → backlight (bL-01, bL-02 or bL-
03) → ODO
TIP The fuel reserve tripmeter appears
only when you are low on fuel.
 Push the “RESET” button to chan-
ge the display in the reverse order.
EAU86890
Odometer
The odometer shows the total distance
traveled by the vehicle.
1. Neutral indicator light “ ”
2. Transmission gear displayZAUM2018
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1
1. Multi-function displayZAUM2019
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1. OdometerZAUM2020
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Instrument and control functions
3-7
3
TIPThe odometer will lock at 999999 and
cannot be reset.
EAU88050
Tripmeters
The tripmeters show the distance trav-
eled since they were last reset.
To reset a tripmeter, change the dis-
play to the tripmeter you want to reset,
and then push the “RESET” button un-
til it is reset.TIPThe tripmeters will reset and continue
counting after 9999.9 is reached.
EAU87600
Fuel reserve tripmeter
If the last segment of the fuel meter
starts flashing, the display automati-
cally changes to the fuel reserve trip-
meter “TRIP F” and starts counting the
distance traveled from that point.
To reset the fuel reserve tripmeter,
push the “RESET” button until it is re-
set.TIPIf you do not reset the fuel reserve trip-
meter manually, it will reset automati-
cally and disappear from the display
after refueling and traveling 5 km (3 mi).
EAUN2661
Clock
The clock uses a 12-hour time system.
To set the clock1. Push the “SELECT” button to
change the display to the clock.
2. Push the “SELECT” button until the hour digits start flashing.
3. Use the “RESET” button to set the hours.
4. Push the “SELECT” button and the minute digits start flashing.
5. Use the “RESET” button to set the minutes.
6. Push the “SELECT” button to con- firm the settings.
1. TripmeterZAUM2021
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1. Fuel reserve tripmeterZAUM2022
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1. ClockZAUM2023
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Instrument and control functions
3-8
3
EAU87771
Instantaneous fuel consumption
d isplay
This display shows the fuel consump-
tion under the current riding condi-
tions. It can be set to either “km/L” or
“L/100 km”, or “MPG” when using
miles. To switch the fuel consumption
measurement units, push the “SE-
LECT” button until the measurement
units change.  “km/L”: the distance that can be
traveled on 1.0 L of fuel.
 “L/100 km”: the amount of fuel
necessary to travel 100 km.
 “MPG”: the distance that can be
traveled on 1.0 Imp.gal of fuel.
TIPWhen traveling under 10 km/h (6 mi/h),
“_ _._” is displayed.
EAU87860
Avera ge fuel consumption display
This display shows the average fuel
consumption since it was last reset.
The average fuel consumption display
can be set to either “AVE_ _._ km/L” or
“AVE_ _._ L/100 km”, or “AVE_ _._
MPG” when using miles. To switch the
fuel consumption measurement units,
push the “SELECT” button until the
measurement units change.  “AVE_ _._ km/L”: the average dis-
tance that can be traveled on 1.0 L
of fuel. 
“AVE_ _._ L/100 km”: the average
amount of fuel necessary to travel
100 km.
 “AVE_ _._ MPG”: the average dis-
tance that can be traveled on
1.0 Imp.gal of fuel.
TIPTo reset the display, push the
“RESET” button until it resets.
 After resetting, “_ _._” is shown
until the vehicle has traveled some
distance.
EAU87881
Avera ge speed d isplay
This display shows the vehicle’s aver-
age traveling speed since it was last re-
set.
1. Instantaneous fuel consumption displayZAUM2024
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1. Average fuel consumption displayZAUM2025
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1. Average speed displayZAUM2026
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