4-2
PRE-OPERATION CHECKS
1
2
34
5
6
7
8
9
Throttle grip•Make sure that operation is smooth.
•Lubricate throttle grip, housing and cables if necessary.
•Check free play.
•If necessary, have Yamaha dealer make adjustment.6-22, 6-29
Wheels and tires•Check for damage.
•Check tire condition and tread depth.
•Check air pressure.
•Correct if necessary.6-23–6-25
Brake levers•Make sure that operation is smooth.
•Lubricate lever pivoting points if necessary.6-29
Centerstand, sidestand•Make sure that operation is smooth.
•Lubricate pivots if necessary.6-2930
Chassis fasteners•Make sure that all nuts, bolts and screws are properly tightened.
•Tighten if necessary.—
Instruments, lights,
signals and switches•Check operation.
•Correct if necessary.3-2–3-7, 6-35–6-36
Sidestand switch•Check operation of ignition circuit cut-off system.
•If system is defective, have Yamaha dealer check vehicle.3-13–3-14 ITEM CHECKS PAGE
5GJ-9-EV 5/26/01 11:04 AM Page 33
5-1
EAU03844
w8Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer
regarding any control or func-
tion that you do not thorough-
ly understand.
8Never start the engine or oper-
ate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of con-
sciousness and death within a
short time. Always make sure
that there is adequate ventila-
tion.
8For safety, always start the
engine with the centerstand
down.
8When the centerstand is down
and the engine is idling, keep
your hands and feet away
from the rear wheel.
EAU03843
Starting the engine
EC000046
cCSee page 5-4 for engine break-in
instructions prior to operating the
vehicle for the first time.In order for the ignition circuit cut-off
system to enable starting, the side-
stand must be up.
EW000054
w8Before starting the engine,
check the function of the igni-
tion circuit cut-off system
according to the procedure
described on page 3-14.
8Never ride with the sidestand
down.
1. Turn the key to “ON” and make
sure that the engine stop switch
is set to “#”.
2. Close the throttle completely.
3. Start the engine by pushing the
start switch while applying the
front or rear brake.NOTE:
If the engine does not start, release
the start switch, wait a few seconds,
and then try again. Each starting
attempt should be as short as possi-
ble to preserve the battery. Do not
crank the engine more than 10 sec-
onds on any one attempt. If the
engine does not start, try with the
throttle open 1/8 turn.
ECA00045
cCFor maximum engine life, never
accelerate hard when the engine is
cold!
EAU00372
OPERATION AND IMPORTANT RIDING POINTS
1
2
3
45
6
7
8
95GJ-9-EV 5/26/01 11:04 AM Page 36
PERIODIC MAINTENANCE AND MINOR REPAIR
Owner’s tool kit .......................................................6-1
Periodic maintenance and lubrication chart ............6-3
Removing and installing cowlings and panels ........6-6
Checking the spark plugs........................................6-9
Engine oil and oil filter cartridge ............................6-12
Chain drive oil .......................................................6-16
Coolant..................................................................6-17
Cleaning the air filter element ...............................6-19
Adjusting the carburetors ......................................6-21
Adjusting the engine idling speed .........................6-21
Adjusting the throttle cable free play .....................6-22
Adjusting the valve clearance ...............................6-22
Tires ......................................................................6-23
Cast wheels ..........................................................6-25
Front and rear brake levers...................................6-25
Checking the front and rear brake pads................6-26
Checking the brake fluid level ...............................6-27
Changing the brake fluid .......................................6-28
Checking and lubricating the throttle grip and
cable ...................................................................6-29
Lubricating the front and rear brake levers ...........6-29
Checking and lubricating the
centerstand and sidestand ..................................6-30
Checking the front fork ..........................................6-30Checking the steering ...........................................6-31
Checking the wheel bearings ................................6-32
Battery...................................................................6-32
Replacing the fuses ..............................................6-34
Replacing a headlight bulb....................................6-35
Troubleshooting ....................................................6-36
Troubleshooting charts .........................................6-37
6
5GJ-9-EV 5/26/01 11:04 AM Page 41
6-4
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
8
*Rear brake•Check operation, fluid level and vehicle for fluid leakage.
(See NOTE on page 6-5.)√√√√√ √
•Replace brake pads.Whenever worn to the limit
9*Brake hose•Check for cracks or damage.√√√√ √
•Replace. (See NOTE on page 6-5.)Every 4 years
10*Wheels•Check runout and for damage.√√√√
11*Tires•Check tread depth and for damage.
•Replace if necessary.
•Check air pressure.
•Correct if necessary.√√√√
12*Wheel bearings•Check bearing for looseness or damage.√√√√
13*Steering bearings•Check bearing play and steering for roughness.√√√√√
•Lubricate with lithium-soap-based greaseEvery 20,000 km
14*Chassis fasteners•Make sure that all nuts, bolts and screws are properly tightened.√√√√ √
15 Sidestand/centerstand•Check operation.
•Lubricate.√√√√ √
16*Sidestand switch•Check operation.√√√√√ √
17*Front fork•Check operation and for oil leakage.√√√√
18*Rear shock absorber
assembly•Check operation and shock absorber for oil leakage.√√√√
•Lubricate the pivoting points with lithium-soap-based
grease.√√
19*Carburetors•Adjust engine idling speed and synchronization.√√√√√ √ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (×1,000 km)
ANNUAL
CHECK
1 10203040
5GJ-9-EV 5/26/01 11:04 AM Page 45
6-24
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
1a
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 imme-
diately.NOTE:
The tire tread depth limits may differ
from country to country. Always com-
ply with the local regulations.1. Tire sidewall
a. Tire tread depth
EW000079
w8Have a Yamaha dealer replace
excessively worn tires.
Besides being illegal, operat-
ing the scooter with exces-
sively worn tires decreases
riding stability and can lead to
loss of control.
8The replacement of all wheel-
and brake-related parts,
including the tires, should be
left to a Yamaha dealer, who
has the necessary profession-
al knowledge and experience.
Tire information
This scooter is equipped with cast
wheel and tubeless tires.
EW000078
w8The front and rear tires should
be of the same make and
design, otherwise the handling
characteristics of the scooter
cannot be guaranteed.
8After extensive tests, only the
tires listed below have been
approved for this model by
Yamaha Motor Co., Ltd.
Minimum tire tread depth
(front and rear)1.6 mm
FRONT
Manufacturer Size Model
DUNLOP 120/70-14M/C 55S D305FABRIDGESTONE
120/70-14M/C 55S HOOP B03
REAR
Manufacturer Size Model
DUNLOP 150/70-14M/C 66S D305
BRIDGESTONE
150/70-14M/C 66S HOOP B02
5GJ-9-EV 5/26/01 11:04 AM Page 65
6-25
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
EAU03773
Cast wheelsTo maximize the performance, dura-
bility, and safe operation of your
scooter, note the following points
regarding the specified wheels.
8The wheel rims should be
checked for cracks, bends or
warpage before each ride. If any
damage is found, have a
Yamaha dealer replace the
wheel. Do not attempt even the
smallest repair to the wheel. A
deformed or cracked wheel must
be replaced.
8The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced.
An unbalanced wheel can result
in poor performance, adverse
handling characteristics, and a
shortened tire life.
8Ride at moderate speeds after
changing a tire since the tire sur-
face must first be “broken in” for
it to develop its optimal charac-
teristics.
EAU03851
Front and rear brake leversThere should be no free play at the
brake lever ends. If there is free play,
have a Yamaha dealer inspect the
brake system.
EAU00683
w8Have a Yamaha dealer replace
excessively worn tires.
Besides being illegal, operat-
ing the scooter with exces-
sively worn tires decreases
riding stability and can lead to
loss of control.
8The replacement of all wheel-
and brake-related parts,
including the tires, should be
left to a Yamaha dealer, who
has the necessary profession-
al knowledge and experience.
FRONT
5GJ-9-EV 5/26/01 11:04 AM Page 66
6-31
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9To check the operation
1. Place the scooter on a level sur-
face and hold it in an upright
position.
2. While applying the front brake,
push down hard on the handle-
bars several times to check if the
front fork compresses and
rebounds smoothly.
EC000098
cCIf any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or
repair it.
EAU00794
Checking the steeringWorn or loose steering bearings may
cause danger. Therefore, the opera-
tion of the steering must be checked
as follows at the intervals specified in
the periodic maintenance and lubrica-
tion chart.
1. Place a stand under the engine
to raise the front wheel off the
ground.
EW000115
wSecurely support the scooter so
that there is no danger of it falling
over.
2. Hold the lower ends of the front
fork legs and try to move them
forward and backward. If any
free play can be felt, have a
Yamaha dealer check or repair
the steering.
5GJ-9-EV 5/26/01 11:04 AM Page 72
6-32
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
EAU01144
Checking the wheel bearingsThe front and rear wheel bearings
must be checked at the intervals
specified in the periodic maintenance
and lubrication chart. If there is play
in the wheel hub or if the wheel does
not turn smoothly, have a Yamaha
dealer check the wheel bearings.
1
1. Screw (×3)
EAU03876
BatteryThis scooter is equipped with a
sealed-type (MF) battery, which does
not require any maintenance. There
is no need to check the electrolyte or
to add distilled water.
To access the battery
1. Open the seat. (See page 3-9 for
seat opening and closing proce-
dures.)
2. Remove the battery cover by
removing the screws.
1
1. BatteryTo charge the battery
Have a Yamaha dealer charge the
battery as soon as possible if it
seems to have discharged. Keep in
mind that the battery tends to dis-
charge more quickly if the scooter is
equipped with optional electrical
accessories.
5GJ-9-EV 5/26/01 11:04 AM Page 73