2018 YAMAHA MT-125 check engine

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Page 36 of 96

YAMAHA MT-125 2018  Owners Manual For your safety – pre-operation checks
4-1
4
EAU63440
Inspect your vehicle each time you use it to make sure the vehicle is in safe oper-
ating condition. Always follow the inspection and maintenanc

Page 39 of 96

YAMAHA MT-125 2018  Owners Manual Operation and important riding points
5-2
5
EAUM3531
Starting the engine
In order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:
The transm

Page 42 of 96

YAMAHA MT-125 2018  Owners Manual Operation and important riding points
5-5
51000 km (600 mi) and beyond
The vehicle can now be operated nor-
mally.
NOTICE
ECA10311
Keep the engine speed out of
the tachometer red zone.
If any en

Page 45 of 96

YAMAHA MT-125 2018  Owners Manual Periodic maintenance and adjustment
6-3
6
EAU71020
TIP
The annual checks must be performed every year, except if a kilometer-
based maintenance, or for the UK, a mileage-based maintenance, is
perfo

Page 48 of 96

YAMAHA MT-125 2018  Owners Manual 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 a

Page 50 of 96

YAMAHA MT-125 2018  Owners Manual Periodic maintenance and adjustment
6-8
6
EAU19607
Checking the spark plug
The spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to

Page 51 of 96

YAMAHA MT-125 2018  Owners Manual Periodic maintenance and adjustment
6-9
6 To install the spark plug
1. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.
2.

Page 53 of 96

YAMAHA MT-125 2018  Owners Manual Periodic maintenance and adjustment
6-11
6 8. Remove and replace the oil filter
element and O-ring.
9. Install the oil filter element cover
by installing the bolts, then tight-
ening them to the speci
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