PERIODIC MAINTENANCE AND MINOR REPAIR
6-23
6
EAU25941
Troubleshooting charts Starting problems or poor engine performance
WARNING
EWA10840
Keep away open flames and do not smoke while checking or working on the fuel system.
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plugs
and check the electrodes.3. Ignition
Wet
Dry
Wipe off with a dry cloth and correct the
spark plug gaps, or replace the spark plugs.
Have a Yamaha dealer check the vehicle.The engine does not start.
Check the battery.
Open the throttle halfway and operate
the electric starter.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.The battery is good.
Check the electrolyte and battery
lead connections, and charge the
battery if necessary.The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the compressoin.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-24
6 Engine overheating
WARNING
EWA10400
Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.
After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissingsound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
NOTE:If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolantas soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See NOTE.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
SCOOTER CARE AND STORAGE
7-2
7 After normal use
Remove dirt with warm water, a mild
detergent, and a soft, clean sponge,
and then rinse thoroughly with clean
water. Use a toothbrush or bottlebrush
for hard-to-reach areas. Stubborn dirt
and insects will come off more easily if
the area is covered with a wet cloth for
a few minutes before cleaning.
After riding in the rain, near the sea oron salt-sprayed roadsSince sea salt or salt sprayed on the
roads during winter are extremely cor-
rosive in combination with water, carry
out the following steps after each ride in
the rain, near the sea or on salt-
sprayed roads.NOTE:Salt sprayed on roads in the winter mayremain well into spring.
1. Clean the scooter with cold water
and a mild detergent after the en-
gine has cooled down.
CAUTION:
ECA10790
Do not use warm water since it in-
creases the corrosive action of thesalt.
2. Apply a corrosion protection spray
on all metal, including chrome- and
nickel-plated, surfaces to prevent
corrosion.
After cleaning
1. Dry the scooter with a chamois or
an absorbing cloth.
2. Use a chrome polish to shine
chrome, aluminum and stainless-
steel parts, including the exhaust
system. (Even the thermally in-
duced discoloring of stainless-
steel exhaust systems can be re-
moved through polishing.)
3. To prevent corrosion, it is recom-
mended to apply a corrosion pro-
tection spray on all metal,
including chrome- and nickel-plat-
ed, surfaces.
4. Use spray oil as a universal clean-
er to remove any remaining dirt.5. Touch up minor paint damage
caused by stones, etc.
6. Wax all painted surfaces.
7. Let the scooter dry completely be-
fore storing or covering it.
WARNING
EWA10940
Make sure that there is no oil or
wax on the brakes or tires. If
necessary, clean the brake
discs and brake linings with a
regular brake disc cleaner or ac-
etone, and wash the tires with
warm water and a mild deter-
gent.
Before operating the scooter
test its braking performanceand cornering behavior.
CAUTION:
ECA10800
Apply spray oil and wax spar-
ingly and make sure to wipe off
any excess.
Never apply oil or wax to any
rubber and plastic parts, but
treat them with a suitable care
product.
SCOOTER CARE AND STORAGE
7-4
7
WARNING
EWA10950
To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turningthe engine over.
5. Lubricate all control cables and the
pivoting points of all levers and
pedals as well as of the side-
stand/centerstand.
6. Check and, if necessary, correct
the tire air pressure, and then lift
the scooter so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
7. Cover the muffler outlet with a
plastic bag to prevent moisture
from entering it.
8. Remove the battery and fully
charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-
cessively cold or warm place [less
than 0 °C (30 °F) or more than 30°C (90 °F)]. For more information
on storing the battery, see page
6-18.
NOTE:Make any necessary repairs beforestoring the scooter.
SPECIFICATIONS
8-2
8
Manufacturer/model:
MICHELIN / PILOT SPORT
Manufacturer/model:
PIRELLI / EVO21Rear tire:Type:
Tubeless
Size:
140/60-13 57L
Manufacturer/model:
MICHELIN / PILOT SPORT
Manufacturer/model:
PIRELLI / EVO22Loading:Maximum load:
180 kg (397 lb)
(Total weight of rider, passenger, cargo and
accessories)Tire air pressure (measured on cold
tires):Loading condition:
0–90 kg (0–198 lb)
Front:
150 kPa (22 psi) (1.50 kgf/cm²)
Rear:
150 kPa (22 psi) (1.50 kgf/cm²)
Loading condition:
90–180 kg (198–397 lb)
Front:
160 kPa (23 psi) (1.60 kgf/cm²)
Rear:
170 kPa (25 psi) (1.70 kgf/cm²)
Front wheel:Wheel type:
Cast wheel
Rim size:
13xMT3.00Rear wheel:Wheel type:
Cast wheel
Rim size:
13xMT3.50Front brake:Type:
Single disc brake
Operation:
Right hand operation
Recommended fluid:
DOT 4Rear brake:Type:
Single disc brake
Operation:
Left hand operation
Recommended fluid:
DOT 4Front suspension:Type:
Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
80.0 mm (3.15 in)Rear suspension:Type:
Unit swingSpring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel:
70.0 mm (2.76 in)
Electrical system:Ignition system:
DC. CDI
Charging system:
AC magnetoBattery:Model:
CB4-LB(GS), YB4L-B(YUASA)
Voltage, capacity:
12 V, 4.0 AhHeadlight:Bulb type:
IncandescenceBulb voltage, wattage x quantity:Headlight:
12 V, 35 W/35.0 W × 1
Tail/brake light:
12 V, 21.0 W/5.0 W × 1
Front turn signal light:
12 V, 10.0 W × 2
Rear turn signal light:
12 V, 10.0 W × 2
Meter lighting:
12 V, 1.2 W × 2
High beam indicator light:
12 V, 2.0 W × 1
Oil level warning light:
12 V, 2.0 W × 1
Turn signal indicator light:
12 V, 2.0 W × 1
SPECIFICATIONS
8-3
8
Coolant temperature warning light:
12 V, 1.2 W × 1Fuses:Main fuse:
7.5 A
INDEX
AAcceleration and deceleration ................ 5-2
Air filter element, cleaning ...................... 6-9BBattery .................................................. 6-18
Brake fluid, changing ............................ 6-15
Brake fluid level, checking .................... 6-15
Brake lever, front .................................... 3-5
Brake lever, rear ..................................... 3-5
Brake levers, lubricating ....................... 6-16
Braking ................................................... 5-3CCarburetor,adjusting ............................. 6-10
Care ........................................................ 7-1
Catalytic converter .................................. 3-7
Centerstand, checking and
lubricating ........................................... 6-16
Coolant ................................................... 6-8
Coolant temperature warning light.......... 3-2
Cowling and panel, removing and
installing ............................................... 6-5DDimmer switch ........................................ 3-4EEngine break-in ...................................... 5-4FFinal transmission oil .............................. 6-7
Front and rear brake lever free play,
checking ............................................. 6-13
Front and rear brake pads, checking .... 6-14
Front fork, checking .............................. 6-17
Fuel......................................................... 3-6
Fuel consumption, tips for reducing........ 5-3
Fuel gauge.............................................. 3-4Fuel tank cap........................................... 3-5
Fuse, replacing...................................... 6-20
HHandlebar switches ................................. 3-4
Headlight bulb, replacing....................... 6-21
High beam indicator light......................... 3-2
Horn switch ............................................. 3-4IIdentification numbers ............................. 9-1
Indicator and warning lights .................... 3-2KKey identification number ........................ 9-1
Kickstarter ............................................... 3-8MMain switch/steering lock ........................ 3-1
Model label .............................................. 9-2OOil level warning light .............................. 3-2PParking ....................................................5-4
Part locations .......................................... 2-1
Periodic maintenance and lubrication
chart ......................................................6-2
Pre-operation check list........................... 4-2RRider seat ................................................ 3-8SSafe-riding points .................................... 1-4
Safety information ...................................1-1
Shock absorber assembly, adjusting
(Depends on models).......................... 3-10
Spark plug, checking ...............................6-6
Specifications .......................................... 8-1
Speedometer unit .................................... 3-3Starting off .............................................. 5-2
Starting the engine.................................. 5-1
Start switch ............................................. 3-4
Steering, checking ................................ 6-17
Storage ................................................... 7-3
Storage compartment A .......................... 3-9
Storage compartment B ........................ 3-10
TTachometer (Depends on models) ......... 3-3
Tail/brake light bulb, replacing .............. 6-21
Throttle cable free play, checking ......... 6-11
Throttle grip and cable, checking and
lubricating ........................................... 6-16
Tires ...................................................... 6-11
Troubleshooting .................................... 6-22
Troubleshooting charts ......................... 6-23
Turn signal indicator light ........................ 3-2
Turn signal light bulb, replacing ............ 6-22
Turn signal switch ................................... 3-4
Two-stroke engine oil.............................. 3-8
Two-stroke engine oil tank ...................... 3-7VVehicle identification number .................. 9-1WWheel bearings, checking..................... 6-18
Wheels .................................................. 6-13