light YAMAHA MT-03 2020 Owner's Guide

Periodic maintenance and adjustment
6-35
6
EAU25872
Troubleshooting
Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWA15142
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from water
heaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or prop-
erty damage.
UB6WE0E0.book Page 35 Friday, March 27, 2020 11:37 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.
UB6WE0E0.book Page 2 Friday, March 27, 2020 11:37 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.
UB6WE0E0.book Page 3 Friday, March 27, 2020 11:37 AM

Specifications
8-2
8
*Loading:
Maximum load:
160 kg (353 lb)
(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
*Electrical system:
System voltage:
12 V
*Battery:
Model:
GTZ8V
Voltage, capacity:
12 V, 7.0 Ah (10 HR)
*Bulb wattage:
Headlight:
LED
Brake/tail light:
LED
Front turn signal light:
LED
Rear turn signal light:
LED
Auxiliary light:
LED
License plate light:
5.0 W
UB6WE0E0.book Page 2 Friday, March 27, 2020 11:37 AM

10-1
10
Index
A
ABS ...................................................... 3-13
ABS warning light ................................... 3-3
Air filter element and check hose,
replacing and cleaning ....................... 6-13
B
Battery .................................................. 6-29
Brake and clutch levers,
checking and lubricating .................... 6-26
Brake and shift pedals,
checking and lubricating .................... 6-26
Brake fluid, changing ........................... 6-22
Brake fluid level, checking ................... 6-21
Brake lever ........................................... 3-12
Brake lever free play, checking ............ 6-19
Brake light switches ............................. 6-20
Brake pedal .......................................... 3-13
C
Cables, checking and lubricating ......... 6-25
Canister .................................................. 6-8
Care ........................................................ 7-1
Catalytic converter ............................... 3-17
Clock ...................................................... 3-5
Clutch lever .......................................... 3-11
Clutch lever free play, adjusting ........... 6-18
Coolant ................................................. 6-12
Coolant temperature meter .................... 3-5
D
Data recording, vehicle .......................... 9-2
Diagnostic connector ............................. 9-2
Dimmer switch ..................................... 3-10
Display units, switching.......................... 3-4
Drive chain, cleaning and lubricating ... 6-24
Drive chain slack .................................. 6-23
E
Engine break-in ...................................... 5-1
Engine oil and oil filter cartridge ............. 6-8
Engine overheating............................... 6-37
Engine serial number.............................. 9-1
Engine trouble warning light................... 3-3
F
Front and rear brake pads, checking ... 6-20
Front fork, checking ............................. 6-28
Fuel....................................................... 3-15
Fuel consumption, tips for reducing ...... 5-4
Fuel meter .............................................. 3-4
Fuel tank cap........................................ 3-14
Fuel tank overflow hose ....................... 3-16
Fuses, replacing ................................... 6-31
H
Handlebar switches .............................. 3-10
Hazard switch ....................................... 3-10
Helmet holders...................................... 3-19
High beam indicator light........................ 3-2
Horn switch........................................... 3-10
I
Identification numbers ............................ 9-1
Ignition circuit cut-off system ............... 3-22
Indicator lights and warning lights .......... 3-2
L
License plate light bulb, replacing ........ 6-33
Luggage strap holders .......................... 3-21
M
Main switch/steering lock ....................... 3-1
Maintenance and lubrication, periodic ... 6-4
Maintenance, emission control
system .................................................. 6-3
Matte color, caution ................................ 7-1
Model label ............................................. 9-1
Multi-function display ............................. 3-6
Multi-function meter unit ........................ 3-4
N
Neutral indicator light.............................. 3-2
O
Oil pressure warning light ....................... 3-2
P
Parking .................................................... 5-5
Part locations .......................................... 2-1
Pass switch........................................... 3-10
S
Safety information................................... 1-1
Seats ..................................................... 3-17
Shift indicator light .................................. 3-3
Shift indicator light control mode ........... 3-8
Shifting .................................................... 5-3
Shift pedal............................................. 3-12
Shock absorber assembly, adjusting ... 3-20
Sidestand .............................................. 3-22
Sidestand, checking and lubricating .... 6-27
Spark plugs, checking ............................ 6-7
Specifications ......................................... 8-1
Speedometer .......................................... 3-4
Start/Engine stop switch ...................... 3-10
Starting the engine.................................. 5-2
Steering, checking ................................ 6-28
Storage ................................................... 7-4
Storage compartment ........................... 3-20
Supporting the motorcycle ................... 6-34
Swingarm pivots, lubricating ................ 6-27
UB6WE0E0.book Page 1 Friday, March 27, 2020 11:37 AM

Index
10-2
10
T
Tachometer ............................................. 3-4
Throttle grip and cable,
checking and lubricating .................... 6-25
Throttle grip free play, checking ........... 6-15
Tires ...................................................... 6-16
Tool kit .................................................... 6-2
Transmission gear display ...................... 3-5
Troubleshooting .................................... 6-35
Troubleshooting chart........................... 6-36
Turn signal indicator lights ...................... 3-2
Turn signal switch ................................. 3-10
V
Valve clearance..................................... 6-15
Vehicle identification number ................. 9-1
Vehicle lights ......................................... 6-33
W
Wheel bearings, checking..................... 6-29
Wheels .................................................. 6-18
Y
Yamalube .............................................. 6-11
UB6WE0E0.book Page 2 Friday, March 27, 2020 11:37 AM