6-37
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
EAU02990
Troubleshooting chartsStarting problems or poor engine performance
EW000125
wKeep 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.
The engine does not start.
Check the compression.
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
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.
Have a Yamaha dealer
check the vehicle.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.DryWet
The engine does not start.
Check the battery.Open the throttle halfway and operate
the electric starter.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
5GJ-9-EV 5/26/01 11:04 AM Page 78
7-1
CareWhile the open design of a scooter
reveals the attractiveness of the tech-
nology, it also makes it more vulnera-
ble. Rust and corrosion can develop
even if high-quality components are
used. A rusty exhaust pipe may go
unnoticed on a car, however, it
detracts from the overall appearance
of a scooter. Frequent and proper
care does not only comply with the
terms of the warranty, but it will also
keep your scooter looking good,
extend its life and optimize its perfor-
mance.Before cleaning
1. Cover the muffler outlet with a
plastic bag after the engine has
cooled down.
2. Make sure that all caps and cov-
ers as well as all electrical cou-
plers and connectors, including
the spark plug cap, are tightly
installed.
3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such
products onto seals, gaskets and
wheel axles. Always rinse the dirt
and degreaser off with water.Cleaning
ECA00011
cC8Avoid using strong acidic
wheel cleaners, especially on
spoked wheels. If such prod-
ucts are used on hard-to-
remove dirt, do not leave the
cleaner on the affected area
any longer than instructed.
Also, thoroughly rinse the area
off with water, immediately dry
it, and then apply a corrosion
protection spray.
8Improper cleaning can damage
windshields, cowlings, panels
and other plastic parts. Use
only a soft, clean cloth or
sponge with mild detergent
and water to clean plastic.
EAU03873
SCOOTER CARE AND STORAGE
1
2
3
4
5
67
8
95GJ-9-EV 5/26/01 11:04 AM Page 82
7
SCOOTER CARE AND STORAGE
7-4
StorageShort-term
Always store your scooter in a cool,
dry place and, if necessary, protect it
against dust with a porous cover.
ECA00015
cC8Storing the scooter in a poorly
ventilated room or covering it
with a tarp, while it is still wet,
will allow water and humidity
to seep in and cause rust.
8To prevent corrosion, avoid
damp cellars, stables (because
of the presence of ammonia)
and areas where strong chemi-
cals are stored.
Long-term
Before storing your scooter for sever-
al months:
1. Follow all the instructions in the
“Care” section of this chapter.
2. Drain the carburetor float cham-
bers by loosening the drain bolts;
this will prevent fuel deposits
from building up. Pour the
drained fuel into the fuel tank.
3. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
4. Perform the following steps to
protect the cylinders, piston
rings, etc. from corrosion.a. Remove the spark plug caps
and the spark plugs.
b. Pour a teaspoonful of engine
oil into the spark plug bores.
c. Install the spark plug caps
onto the spark plugs, and then
place the spark plugs on the
cylinder head so that the elec-
trodes are grounded. (This will
limit sparking during the next
step.)
d. Turn the engine over several
times with the starter. (This
will coat the cylinder walls with
oil.)
e. Remove the spark plug caps
from the spark plugs, and then
install the spark plugs and the
spark plug caps.
EWA00003
wTo prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turn-
ing the engine over.
5GJ-9-EV 5/26/01 11:04 AM Page 85
8-2
SPECIFICATIONS
1
2
3
4
5
6
78
9
Radiator capacity
(including all routes)1.5 L
Air filterDry element
Fuel
Type Regular unleaded gasoline
Fuel tank capacity 14 L
Carburetor
Manufacturer MIKUNI
Model × quantity BS30 × 2
Spark plug
Manufacturer/model × quantity NGK / CR7E × 2
Spark plug gap 0.7–0.8 mm
Clutch typeWet, multiple-disc automatic
Transmission
Primary reduction system Helical gear/spur gear
Primary reduction ratio 52/32 ×36/22 (2.659)
Secondary reduction system Chain drive
Secondary reduction ratio 41/25 ×40/29 (2.262)
Transmission type V-belt automatic
Operation Centrifugal automatic clutchChassis
Frame type Diamond
Caster angle 28°
Trail 95 mm
Tires
Front
Type Tubeless
Size 120/70-14M/C 55S
Manufacturer/ DUNLOP / D305FA
model BRIDGESTONE / HOOP B03
Rear
Type Tubeless
Size 150/70-14M/C 66S
Manufacturer/ DUNLOP / D305
model BRIDGESTONE / HOOP B02
Maximum load* 183 kg
Air pressure (cold tire)
up to 90 kg load*
Front 200 kPa (2.00 kg/cm
2, 2.00 bar)
Rear 225 kPa (2.25 kg/cm2, 2.25 bar)
90 kg load–maximum
load*
Front 225 kPa (2.25 kg/cm2, 2.25 bar)
Rear 250 kPa (2.50 kg/cm2, 2.50 bar)
5GJ-9-EV 5/26/01 11:04 AM Page 89
INDEX
F
Front and rear brake levers ...................6-25
Front and rear brake pads, checking.....6-26
Front fork, checking ...............................6-30
Fuel .........................................................3-9
Fuel consumption, tips for reducing ........5-3
Fuel gauge ..............................................3-4
Fuel tank cap ...........................................3-8
Fuses, replacing ....................................6-34
H
Handlebar switches .................................3-6
Pass switch ...........................................3-6
Dimmer switch ......................................3-6
Turn signal switch .................................3-6
Horn switch ...........................................3-6
Engine stop switch ................................3-7
Start switch ...........................................3-7
Headlight bulb, replacing .......................6-35
Helmet holder ........................................3-11
I
Identification numbers .............................9-1
Ignition circuit cut-off system .................3-13
Indicator lights .........................................3-2
Turn signal indicator lights ....................3-3
High beam indicator light ......................3-3
Oil change indicator light ......................3-2
V-belt replacement indicator light .........3-3
K
Key identification number ........................9-1
M
Main switch/steering lock ........................3-1
Model label ..............................................9-2
P
Parking ....................................................5-4
Part locations...........................................2-1
Periodic maintenance and lubrication
chart ......................................................6-3
Pre-operation check list ...........................4-1
R
Rider backrest, adjusting .......................3-10
S
Safe-riding points ....................................1-2
Seat .........................................................3-9
Sidestand ..............................................3-12
Self-diagnosis device ..............................3-6
Spark plugs, checking .............................6-9
Specifications ..........................................8-1
Speedometer unit ....................................3-3
Starting the engine ..................................5-1
Starting off ...............................................5-2
Steering, checking .................................6-31
Storage ....................................................7-4
Storage compartments ..........................3-12
T
Throttle cable free play, adjusting .........6-22
Throttle grip and cable, checking and
lubricating ...........................................6-29
Tires ......................................................6-23
A
Acceleration and deceleration .................5-2
Air filter element, cleaning .....................6-19
Anti-theft alarm (optional) ........................3-5
B
Battery ...................................................6-32
Brake fluid level, checking .....................6-27
Brake fluid, changing .............................6-28
Brake lever (front)....................................3-7
Brake lever (rear) ....................................3-8
Brake levers, lubricating ........................6-28
Braking ....................................................5-3
C
Carburetors, adjusting ...........................6-21
Care.........................................................7-1
Centerstand and sidestand, checking
and lubricating ....................................6-30
Chain drive oil........................................6-16
Clock .......................................................3-5
Conversion table .....................................8-5
Coolant ..................................................6-17
Coolant temperature gauge.....................3-4
Cowlings and panels, removing and
installing ................................................6-6
E
Engine break-in .......................................5-4
Engine idling speed ...............................6-21
Engine oil and oil filter cartridge ............6-12
5GJ-9-EV 5/26/01 11:04 AM Page 96