brake YAMAHA MT-125 2017 User Guide

Periodic maintenance and adjustment
6-1
6
EAU17246
Periodic inspection, adjustment, and
lubrication will keep your vehicle in the
safest and most efficient condition
possible. Safety is an obligation of the
vehicle owner/operator. The most im-
portant points of vehicle inspection,
adjustment, and lubrication are ex-
plained on the following pages.
The intervals given in the periodic
maintenance charts should be simply
considered as a general guide under
normal riding conditions. However, de-
pending on the weather, terrain, geo-
graphical location, and individual use,
the maintenance intervals may need to
be shortened.
WARNING
EWA10322
Failure to properly maintain the vehi-
cle or performing maintenance ac-
tivities incorrectly may increase
your risk of injury or death during
service or while using the vehicle. If
you are not familiar with vehicle ser-
vice, have a Yamaha dealer perform
service.
WARNING
EWA15123
Turn off the engine when performing
maintenance unless otherwise
specified.
A running engine has moving
parts that can catch on body
parts or clothing and electrical
parts that can cause shocks or
fires.
Running the engine while ser-
vicing can lead to eye injury,
burns, fire, or carbon monoxide
poisoning – possibly leading todeath. See page 1-3 for more in-
formation about carbon monox-
ide.
WARNING
EWA15461
Brake discs, calipers, drums, and
linings can become very hot during
use. To avoid possible burns, let
brake components cool before
touching them.
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Periodic maintenance and adjustment
6-4
6
EAU71361
General maintenance and lubrication chart
NO. ITEM
1*Diagnostic system
check• Perform dynamic inspection us-
ing Yamaha diagnostic tool.
• Check the error codes.√√√√√√
2*Air filter element• Clean.√√
• Replace.√√
3Air filter case
check hose• Clean.√√√√√
4*Battery• Check electrolyte level and spe-
cific gravity.
• Make sure that the breather
hose is properly routed.√√√√√
5Clutch• Check operation.
•Adjust.√√√√√
6*Front brake• Check operation, fluid level, and
for fluid leakage.
• Replace brake pads if neces-
sary.√√√√√√
7*Rear brake• Check operation, fluid level, and
for fluid leakage.
• Replace brake pads if neces-
sary.√√√√√√
8*Brake hoses• Check for cracks or damage.√√√√√
• Replace. Every 4 years
9*Brake fluid• Change. Every 2 years
10*Wheels• Check runout and for damage.
• Replace if necessary.√√√√
11*Tires• Check tread depth and for dam-
age.
• Replace if necessary.
• Check air pressure.
• Correct if necessary.√√√√√
12*Wheel bearings• Check bearing for looseness or
damage.√√√√X 1000 km CHECK OR
MAINTENANCE JOB
X 1000 miODOMETER
READINGANNUAL CHECK
1 6 12 18 24
0.6 3.5 7 10.5 14
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Periodic maintenance and adjustment
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13*Swingarm pivot
bearings• Check operation and for exces-
sive play.√√√√
• Lubricate with lithium-soap-
based grease.Every 24000 km (14000 mi)
14 Drive chain• Check chain slack, alignment
and condition.
• Adjust and lubricate chain with a
special O-ring chain lubricant
thoroughly.Every 1000 km (600 mi) and af-
ter washing the motorcycle, rid-
ing in the rain or riding in wet
areas
15*Steering bearings• Check bearing assemblies for
looseness.√√√√
• Moderately repack with lithium-
soap-based grease.√
16*Chassis fasteners• Make sure that all nuts, bolts
and screws are properly tight-
ened.√√√√√
17Brake lever pivot
shaft• Lubricate with silicone grease.√√√√√
18Brake pedal pivot
shaft• Lubricate with lithium-soap-
based grease.√√√√√
19Clutch lever pivot
shaft• Lubricate with lithium-soap-
based grease.√√√√√
20 Sidestand• Check operation.
• Lubricate with lithium-soap-
based grease.√√√√√
21*Sidestand switch• Check operation and replace if
necessary.√√√√√√
22*Front fork• Check operation and for oil leak-
age.
• Replace if necessary.√√√√
23*Shock absorber
assembly• Check operation and for oil leak-
age.
• Replace if necessary.√√√√
24*Rear suspension
relay arm and con-
necting arm pivot-
ing points• Check operation.√√√√
• Lubricate with lithium-soap-
based grease.√√ NO. ITEM
X 1000 km CHECK OR
MAINTENANCE JOB
X 1000 mi
ODOMETER
READING
ANNUAL CHECK
16121824
0.63.5710.514
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Periodic maintenance and adjustment
6-6
6
EAU72740
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 change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.
25 Engine oil• Change (warm engine before
draining).At the initial interval and when
the oil change indicator flashes
or comes on
• Check oil level and vehicle for oil
leakage.Every 3000 km (1800 mi)
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
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Periodic maintenance and adjustment
6-17
6
WARNING
EWA10512
Never overload your vehicle. Opera-
tion of an overloaded vehicle could
cause an accident.
Tire inspection
The tires must be checked before each
ride. If the center tread depth reaches
the specified limit, if the tire has a nail
or glass fragments in it, or if the side-
wall is cracked, have a Yamaha dealer
replace the tire immediately.
TIP
The tire tread depth limits may differ
from country to country. Always com-
ply with the local regulations.
WARNING
EWA10472
Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the vehi-
cle with excessively worn tires
decreases riding stability and
can lead to loss of control.
The replacement of all wheel
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience to do so.
Ride at moderate speeds after
changing a tire since the tire
surface must first be “broken
in” for it to develop its optimal
characteristics.
Tire information
Tire air pressure (measured on cold
tires):
Up to 90 kg (198 lb) load:
Front:
180 kPa (1.80 kgf/cm², 26 psi)
Rear:
200 kPa (2.00 kgf/cm², 29 psi)
90 kg (198 lb) to maximum load:
Front:
180 kPa (1.80 kgf/cm², 26 psi)
Rear:
225 kPa (2.25 kgf/cm², 33 psi)
Maximum load*:
180 kg (397 lb)
* Total weight of rider, passenger, car-
go and accessories
1. Tire sidewall
2. Tire tread depth
Minimum tire tread depth (front and
rear):
1.6 mm (0.06 in)
1. Tire air valve
2. Tire air valve core
3. Tire air valve cap with seal
123
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Periodic maintenance and adjustment
6-20
66. To increase the clutch lever free
play, turn the clutch lever free play
adjusting nut in direction (a). To
decrease the clutch lever free
play, turn the adjusting nut in di-
rection (b).
7. Tighten the locknut at the crank-
case.
8. Tighten the locknut at the clutch
lever and then slide the rubber
cover to its original position.
EAUT1223
Checking the front brake lever
free play
Measure the front brake lever free play
as shown.
Periodically check the brake lever free
play and, if necessary, have a Yamaha
dealer check the brake system.
WARNING
EWA10642
An incorrect brake lever free play in-
dicates a hazardous condition in the
brake system. Do not operate the
vehicle until the brake system has
been checked or repaired by a
Yamaha dealer.
1. Locknut
2. Clutch lever free play adjusting nut (crank-
case)
1. Brake lever free play
Front brake lever free play:
2.0–5.0 mm (0.08–0.20 in)
ZAUM1179
INFOINFO
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Periodic maintenance and adjustment
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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.
EAU36504
Brake light switches
The brake light, which is activated by
the brake pedal and brake lever,
should come on just before braking
takes effect. If necessary, have a
Yamaha dealer adjust the brake light
switches.
1. Brake pedal free play
Brake pedal free play:
3.5–4.5 mm (0.14–0.18 in)
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Periodic maintenance and adjustment
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6
EAU22393
Checking the front and rear
brake pads
The front and rear brake pads must be
checked for wear at the intervals spec-
ified in the periodic maintenance and
lubrication chart.
EAU22421Front brake pads
Each front brake pad is provided with a
wear indicator groove, which allows
you to check the brake pad wear with-
out having to disassemble the brake.
To check the brake pad wear, check
the wear indicator groove. If a brake
pad has worn to the point that the wear
indicator groove has almost disap-
peared, have a Yamaha dealer replace
the brake pads as a set.
EAU22501Rear brake pads
Check each rear brake pad for damage
and measure the lining thickness. If a
brake pad is damaged or if the lining
thickness is less than 1.5 mm (0.06 in),
have a Yamaha dealer replace the
brake pads as a set.
1. Wear indicator groove
ZAUM1466
1
1. Lining thickness
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Periodic maintenance and adjustment
6-23
6
EAU40262
Checking the brake fluid level
Before riding, check that the brake fluid
is above the minimum level mark.
Check the brake fluid level with the top
of the reservoir level. Replenish the
brake fluid if necessary.
Front brake
Rear brake
WARNING
EWA16011
Improper maintenance can result in
loss of braking ability. Observe
these precautions:
Insufficient brake fluid may al-
low air to enter the brake sys-
tem, reducing braking
performance.Clean the filler cap before re-
moving. Use only DOT 4 brake
fluid from a sealed container.
Use only the specified brake flu-
id; otherwise, the rubber seals
may deteriorate, causing leak-
age.
Refill with the same type of
brake fluid. Adding a brake fluid
other than DOT 4 may result in a
harmful chemical reaction.
Be careful that water or dust
does not enter the brake fluid
reservoir when refilling. Water
will significantly lower the boil-
ing point of the fluid and may re-
sult in vapor lock, an
d dirt may
clog the ABS hydraulic unit
valves.
NOTICE
ECA17641
Brake fluid may damage painted
surfaces or plastic parts. Always
clean up spilled fluid immediately.
As the brake pads wear, it is normal for
the brake fluid level to gradually go
down. A low brake fluid level may indi-
cate worn brake pads and/or brake
system leakage; therefore, be sure to
check the brake pads for wear and the
brake system for leakage. If the brake
fluid level goes down suddenly, have a
Yamaha dealer check the cause before
further riding.
1. Minimum level mark
1. Minimum level mark
Specified brake fluid:
DOT 4
ZAUM1209
I
NFOI
NFO
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Periodic maintenance and adjustment
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6
EAU22733
Changing the brake fluid
Have a Yamaha dealer change the
brake fluid at the intervals specified in
the periodic maintenance and lubrica-
tion chart. In addition, have the oil seals
of the master cylinders and calipers as
well as the brake hoses replaced at the
intervals listed below or whenever they
are damaged or leaking.
Oil seals: Replace every two
years.
Brake hoses: Replace every four
years.
EAU22762
Drive chain slack
The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAUM3551To check the drive chain slack
1. Place the motorcycle on the side-
stand.
TIP
When checking and adjusting the drive
chain slack, there should be no weight
on the motorcycle.
2. Shift the transmission into the
neutral position.
3. Measure the drive chain slack at
the arrow mark on the swingarm
as shown in the illustration.
4. If the drive chain slack is incorrect,
adjust it as follows.
EAU3431ATo adjust the drive chain slack
Consult a Yamaha dealer before ad-
justing the drive chain slack.
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
Drive chain slack:
35.0–45.0 mm (1.38–1.77 in)
1. Drive chain slack
ZAUM1233
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