2020 YAMAHA MT-125 brake light

Operation and important riding points
5-5
5 The neutral indicator light should
come on and then the clutch lever
can be released.
WARNING
EWA17380
Improper braking can cause
loss of control or traction. Al-
ways use both brakes and apply
them smoothly.
Make sure that the motorcycle
and the engine have sufficiently
slowed before shifting to a low-
er gear. Engaging a lower gear
when the vehicle or engine
speed is too high could make
the rear wheel lose traction or
the engine to over-rev. This
could cause loss of control, an
accident and injury. It could also
cause engine or drive train dam-
age.
EAU16811
Tips for reducing fuel con-
sumption
Fuel 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).
UB6GE0E0.book Page 5 Wednesday, August 28, 2019 11:11 AM

Periodic maintenance and adjustment
6-6
6
EAU72750
TIP
The air filter needs more frequent service if you are riding in unusually wet or
dusty areas.
Hydraulic brake service
• Regularly check and, if necessary, correct the brake fluid level.
• Every two years replace the internal components of the brake master cyl-
inders and calipers, and change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.
26Engine oil filter el-
ement• Replace.√√√√√
27*Cooling system• Check coolant level and vehicle
for coolant leakage.√√√√√
• Change. Every 3 years
28*Front and rear
brake switches• Check operation.√√√√√√
29*Moving parts and
cables• Lubricate.√√√√√
30*Throttle grip hous-
ing and cable• Check operation and free play.
• Adjust the throttle cable free
play if necessary.
• Lubricate the throttle grip hous-
ing and cable.√√√√√
31*Lights, signals and
switches• Check operation.
• Adjust headlight beam.√√√√√√ NO. ITEM
X 1000 km CHECK OR
MAINTENANCE JOB
X 1000 miODOMETER
READING
ANNUAL CHECK
16121824
0.6 3.5 7 10.5 14
UB6GE0E0.book Page 6 Wednesday, August 28, 2019 11:11 AM

Periodic maintenance and adjustment
6-20
6
EAUM1355
Adjusting the brake pedal free
play
Measure the brake pedal free play as
shown.
Periodically check the brake pedal free
play and, if necessary, have a Yamaha
dealer adjust it.
WARNING
EWAM1031
An incorrect brake pedal free play
indicates a hazardous condition in
the brake system. Do not operate
the motorcycle until the brake sys-
tem has been checked or repaired
by a Yamaha dealer.
EAU36505
Brake light switches
The brake light should come on just
before braking takes effect. The brake
light is activated by switches connect-
ed to the brake lever and brake pedal.
Since the brake light switches are
components of the anti-lock brake sys-
tem, they should only be serviced by a
Yamaha dealer.
1. Brake pedal free play
Brake pedal free play:
7.0–13.0 mm (0.28–0.51 in)
1
UB6GE0E0.book Page 20 Wednesday, August 28, 2019 11:11 AM

Periodic maintenance and adjustment
6-32
63. Turn the main switch on and turn
on the electrical circuit in question
to check if the device operates.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
EAUN2261
Vehicle lights
This model is equipped with LED lights
for headlights, auxiliary lights and
brake/tail light. If a light does not come
on, check the fuse and then have a
Yamaha dealer check the vehicle.
NOTICE
ECA16581
Do not affix any type of tinted film or
stickers to the headlight lens.
Specified fuses:
Main fuse:
15.0 A
ABS motor fuse:
30.0 A
ABS solenoid fuse:
15.0 A
ABS control unit fuse:
2.0 A
Headlight fuse:
7.5 A
1. Auxiliary light
2. Headlight
21
UB6GE0E0.book Page 32 Wednesday, August 28, 2019 11:11 AM

Periodic maintenance and adjustment
6-33
6
EAU24182
Tail/brake light
This model is equipped with an LED-
type tail/brake light.
If the tail/brake light does not come on,
have a Yamaha dealer check it.
EAU62590
Replacing a turn signal light
bulb
1. Remove the turn signal light lens
by removing the screw.
2. Remove the turn signal light bulb
socket (together with the bulb) by
turning it counterclockwise.
3. Remove the burnt-out bulb by
pulling it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with
the bulb) by turning it clockwise.
6. Install the turn signal light lens by
installing the screw. NOTICE: Do
not overtighten the screw, oth-
erwise the lens may break.
[ECA11192]
1. Screw
1. Turn signal light bulb
1
ZAUM1609
1
UB6GE0E0.book Page 33 Wednesday, August 28, 2019 11:11 AM

Motorcycle care and storage
7-2
7 harsh chemicals, including
strong acidic wheel cleaners,
especially on spoke or magne-
sium wheels.
harsh chemicals, abrasive
cleaning compounds, or wax on
matte-finished parts. Brushes
can scratch and damage the
matte-finish, use soft sponge or
towel only.
towels, sponges, or brushes
contaminated with abrasive
cleaning products or strong
chemicals such as, solvents,
gasoline, rust removers, brake
fluid, or antifreeze, etc.
Before washing
1. Park the vehicle out of direct sun-
light and allow it to cool. This will
help avoid water spots.
2. Make sure all caps, covers, elec-
trical couplers and connectors are
tightly installed.
3. Cover the muffler end with a plas-
tic bag and a strong rubber band.
4. Pre-soak stubborn stains like in-
sects or bird droppings with a wet
towel for a few minutes.
5. Remove road grime and oil stains
with a quality degreasing agent
and a plastic-bristle brush or
sponge. NOTICE: Do not use
degreasing agent on areas re-
quiring lubrication such as
seals, gaskets, and wheel axles.
Follow product instructions.
[ECA26290]
Washing
1. Rinse off any degreaser and spray
down the vehicle with a garden
hose. Use only enough pressure
to do the job. Avoid spraying wa-
ter directly into the muffler, instru-
ment panel, air inlet, or other inner
areas such as underseat storage
compartments.
2. Wash the vehicle with a quality au-
tomotive-type detergent mixed
with cool water and a soft, clean
towel or sponge. Use an old tooth-
brush or plastic-bristle brush for
hard-to-reach places. NOTICE:
Use cold water if the vehicle has
been exposed to salt. Warm wa-
ter will increase salt’s corrosive
properties.
[ECA26301]
3. For windshield-equipped vehicles:
Clean the windshield with a soft
towel or sponge dampened with
water and a pH neutral detergent.
If necessary, use a high-quality
windshield cleaner or polish for
motorcycles. NOTICE: Never use
any strong chemicals to clean
the windshield. Additionally,
some cleaning compounds for
plastic may scratch the wind-
shield, so be sure to test all
cleaning products before gen-
eral application.
[ECA26310]
4. Rinse off thoroughly with clean
water. Be sure to remove all deter-
gent residues, as they can be
harmful to plastic parts.
After washing
1. Dry the vehicle with a chamois or
absorbent towel, preferably mi-
crofiber terrycloth.
UB6GE0E0.book Page 2 Wednesday, August 28, 2019 11:11 AM

Motorcycle care and storage
7-3
72. For drive chain-equipped models:
Dry and then lubricate the drive
chain to prevent rust.
3. Use a chrome polish to shine
chrome, aluminum, and stainless
steel parts. Often the thermally in-
duced discoloring of stainless
steel exhaust systems can be re-
moved through polishing.
4. Apply a corrosion protection spray
on all metal parts including
chrome or nickel-plated surfaces.
WARNING! Do not apply silicone
or oil spray to seats, hand grips,
rubber foot pegs or tire treads.
Otherwise these parts will be-
come slippery, which could
cause loss of control. Thor-
oughly clean the surfaces of
these parts before operating the
vehicle. [EWA20650]
5. Treat rubber, vinyl, and unpainted
plastic parts with a suitable care
product.
6. Touch up minor paint damage
caused by stones, etc.
7. Wax all painted surfaces using a
non-abrasive wax or use a detail
spray for motorcycles.
8. When finished cleaning, start the
engine and let it idle for several
minutes to help dry any remaining
moisture.
9. If the headlight lens has fogged
up, start the engine and turn on
the headlight to help remove the
moisture.
10. Let the vehicle dry completely be-
fore storing or covering it.
NOTICE
ECA26320
Do not apply wax to rubber or
unpainted plastic parts.
Do not use abrasive polishing
compounds as they will wear
away the paint.
Apply sprays and wax sparingly.
Wipe off excess afterwards.
WARNING
EWA20660
Contaminants left on the brakes or
tires can cause loss of control.
Make sure there is no lubricant
or wax on the brakes or tires.
If necessary, wash the tires with
warm water and a mild deter-
gent.
If necessary, clean the brake
discs and pads with brake
cleaner or acetone.
Before riding at higher speeds,
test the vehicle’s braking per-
formance and cornering behav-
ior.
UB6GE0E0.book Page 3 Wednesday, August 28, 2019 11:11 AM

Specifications
8-2
8
(Total weight of rider, passenger, cargo and
accessories)
Front brake:
Type:
Hydraulic single disc brake
Rear brake:
Type:
Hydraulic single disc brake
Front suspension:
Type:
Telescopic fork
Rear suspension:
Type:
Swingarm (link suspension)
Electrical system:
System voltage:
12 V
Battery:
Model:
GTZ4V
Voltage, capacity:
12 V, 3.0 Ah (10 HR)
Bulb wattage:
Headlight:
LED
Brake/tail light:
LED
Front turn signal light:
10.0 W
Rear turn signal light:
10.0 W
Auxiliary light:
LED
License plate light:
5.0 W
UB6GE0E0.book Page 2 Wednesday, August 28, 2019 11:11 AM