TABLE OF CONTENTS
SAFETY INFORMATION
.................. 1-1
Further safe-riding points ................ 1-5
DESCRIPTION
.................................. 2-1
Left view .......................................... 2-1
Right view ........................................ 2-2
Controls and instruments................. 2-3
INSTRUMENT AND CONTROL
FUNCTIONS
....................................... 3-1
Immobilizer system ......................... 3-1
Main switch/steering lock ................ 3-2
Indicator and warning lights ............ 3-3
Speedometer .................................. 3-5
Tachometer .................................... 3-5
Multi-function display ...................... 3-5
Anti-theft alarm (optional) ............... 3-9
Handlebar switches ...................... 3-10
Front brake lever .......................... 3-11
Rear brake lever ........................... 3-12
Rear brake lock lever .................... 3-12
ABS (for ABS models) .................. 3-13
Fuel tank cap ................................ 3-14
Fuel ............................................... 3-15
Catalytic converters ...................... 3-16
Seats ............................................ 3-17
Adjusting the rider seat ................. 3-18
Storage compartments ................. 3-19
Adjusting the shock absorber
assemblies ................................ 3-21
Sidestand ...................................... 3-21Ignition circuit cut-off system ........ 3-22
FOR YOUR SAFETY –
PRE-OPERATION CHECKS
............. 4-1
OPERATION AND IMPORTANT
RIDING POINTS
................................. 5-1
Starting the engine ......................... 5-1
Starting off ...................................... 5-2
Acceleration and deceleration ........ 5-2
Braking ........................................... 5-3
Tips for reducing fuel
consumption ............................... 5-3
Engine break-in .............................. 5-4
Parking ........................................... 5-4
PERIODIC MAINTENANCE AND
ADJUSTMENT
................................... 6-1
Owner’s tool kit ............................... 6-1
Periodic maintenance chart for
the emission control system ....... 6-3
General maintenance and
lubrication chart .......................... 6-4
Removing and installing
cowlings and panels ................... 6-7
Checking the spark plug ............... 6-10
Engine oil and oil filter
element ..................................... 6-12
Final transmission oil .................... 6-15
Coolant ......................................... 6-16Air filter elements and check
hoses and V-belt case air
filter element ............................. 6-17
Checking the throttle cable free
play ........................................... 6-20
Valve clearance ........................... 6-20
Tires ............................................. 6-21
Cast wheels ................................. 6-22
Front and rear brake lever free
play ........................................... 6-23
Adjusting the rear brake lock
lever cable ................................ 6-24
Checking the front and rear
brake pads ................................ 6-24
Checking the brake fluid level ...... 6-25
Changing the brake fluid .............. 6-26
Checking and lubricating the
cables ....................................... 6-26
Checking and lubricating the
throttle grip and cable ............... 6-27
Lubricating the front and rear
brake levers .............................. 6-27
Checking and lubricating the
centerstand and sidestand ....... 6-28
Checking the front fork ................. 6-28
Checking the steering .................. 6-29
Checking the wheel bearings ....... 6-29
Battery .......................................... 6-30
Replacing the fuses ..................... 6-31
Replacing a headlight bulb .......... 6-33
Tail/brake light .............................. 6-34
TABLE OF CONTENTS
Front turn signal light .................... 6-34
Replacing a rear turn signal
light bulb .................................... 6-34
Replacing the license plate light
bulb ........................................... 6-35
Auxiliary light bulb ........................ 6-36
Troubleshooting ............................ 6-36
Troubleshooting charts ................. 6-37
SCOOTER CARE AND
STORAGE
.......................................... 7-1
Matte color caution ......................... 7-1
Care ................................................ 7-1
Storage ........................................... 7-3
SPECIFICATIONS
............................. 8-1
CONSUMER INFORMATION
............. 9-1
Identification numbers .................... 9-1
PERIODIC MAINTENANCE AND ADJUSTMENT
6-33
2
3
4
5
67
8
9 For YP400A
3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
EAU34240
Replacing a headlight bulb
This model is equipped with quartz bulb
headlights. If a headlight bulb burns
out, have a Yamaha dealer replace it
and, if necessary, adjust the headlight
beam.
1. Ignition fuse
2. Signaling system fuse
3. Headlight fuse
4. Radiator fan fuse
5. Backup fuse (for clock and rear storage
compartment light)
6. Fuel injection system fuse
7. Spare fuse
7
123456
Specified fuses:
Main fuse:
40.0 A
Ignition fuse:
10.0 A
Signaling system fuse:
10.0 A
Headlight fuse:
20.0 A
Hazard fuse:
10.0 A
Radiator fan fuse:
10.0 A
Fuel injection system fuse:
10.0 A
ABS control unit fuse:
YP400A 10.0 A
ABS motor fuse:
YP400A 30.0 A
ABS solenoid fuse:
YP400A 20.0 A
Backup fuse:
10.0 A
PERIODIC MAINTENANCE AND ADJUSTMENT
6-34
1
2
3
4
5
6
7
8
9
EAU24181
Tail/brake light
This model is equipped with an
LED-type tail/brake light.
If the tail/brake light does not come on,
have a Yamaha dealer check it.
EAU39880
Front turn signal light
If a front turn signal light does not come
on, have a Yamaha dealer check its
electrical circuit or replace the bulb.
EAU34263
Replacing a rear turn signal
light bulb
1. Place the scooter on the center-
stand.
2. Remove cowling C for replacing
the left turn signal light bulb or
cowling D for replacing the right
turn signal light bulb. (See
page 6-7.)
3. Remove the socket (together with
the turn signal light bulb) by turning
it counterclockwise.
4. Remove the burnt-out bulb by
pushing it in and turning it counter-
clockwise.
5. Insert a new bulb into the socket,
1. Turn signal light bulb socket
1
PERIODIC MAINTENANCE AND ADJUSTMENT
6-35
2
3
4
5
67
8
9
push it in, and then turn it clock-
wise until it stops.
6. Install the socket (together with the
bulb) by turning it clockwise.
7. Install the cowling removed.
EAU47900
Replacing the license plate
light bulb
1. Place the scooter on the center-
stand.
2. Remove cowling B. (See
page 6-7.)
3. Remove the license plate light cov-
er and license plate light lens by
removing the screws.
4. Remove the burnt-out bulb by pull-
ing it out.5. Insert a new bulb into the socket.
6. Install the license plate light lens
and license plate light cover by in-
stalling the screws.
7. Install the cowling.
1. Turn signal light bulb
2. Turn signal light bulb socket
2
1
1. License plate light lens
2. License plate light cover
3. Screw
2
3
1
1. License plate light bulb
1
PERIODIC MAINTENANCE AND ADJUSTMENT
6-36
1
2
3
4
5
6
7
8
9
EAU39020
Auxiliary light bulb
If the auxiliary light does not come on,
have a Yamaha dealer check the elec-
trical circuit or replace the bulb.
EAU25881
Troubleshooting
Although Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur dur-
ing 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 scooter re-
quire any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the scooter prop-
erly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
WARNING
EWA15141
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 waterheaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or
property damage.
SPECIFICATIONS
8-3
2
3
4
5
6
7
89
Voltage, capacity:
12 V, 8.0 Ah
Headlight:
Bulb type:
Halogen bulb
Bulb voltage, wattage
×× × ×
quantity:
Headlight:
12 V, 60 W/55 W
×
1
Headlight:
12 V, 55 W
×
1
Tail/brake light:
LED
Front turn signal light:
12 V, 21.0 W
×
2
Rear turn signal light:
12 V, 21.0 W
×
2
Auxiliary light:
12 V, 5.0 W
×
2
License plate light:
12 V, 5.0 W
×
1
Meter lighting:
12 V, 2.0 W
×
3
High beam indicator light:
12 V, 1.4 W
×
1
Turn signal indicator light:
12 V, 1.4 W
×
2
Engine trouble warning light:
12 V, 1.4 W
×
1
ABS warning light:
YP400A 12 V, 1.4 W
×
1
Immobilizer system indicator light:
LED
Fuses:
Main fuse:
40.0 A
Headlight fuse:
20.0 A
Signaling system fuse:
10.0 A
Ignition fuse:
10.0 A
Radiator fan fuse:
10.0 A
Hazard fuse:
10.0 A
Fuel injection system fuse:
10.0 A
ABS control unit fuse:
YP400A 10.0 A
ABS motor fuse:
YP400A 30.0 A
ABS solenoid fuse:
YP400A 20.0 A
Backup fuse:
10.0 A
INDEX
A
ABS (for ABS models) ............................. 3-13
ABS warning light (for ABS models) .......... 3-4
Acceleration and deceleration ................... 5-2
Air filter elements and check hoses
and V-belt case air filter element ........... 6-17
Anti-theft alarm (optional) .......................... 3-9
Auxiliary light bulb.................................... 6-36
B
Battery ..................................................... 6-30
Brake fluid, changing ............................... 6-26
Brake fluid level, checking ....................... 6-25
Brake lever, front ..................................... 3-11
Brake lever, rear ...................................... 3-12
Brake levers, lubricating .......................... 6-27
Braking ...................................................... 5-3
C
Cables, checking and lubricating ............. 6-26
Care ........................................................... 7-1
Catalytic converters ................................. 3-16
Centerstand and sidestand, checking
and lubricating ....................................... 6-28
Coolant .................................................... 6-16
Cowlings and panels, removing and
installing .................................................. 6-7
D
Dimmer switch ......................................... 3-10
E
Engine break-in ......................................... 5-4
Engine oil and oil filter element................ 6-12
Engine stop switch................................... 3-10
Engine trouble warning light ...................... 3-3
F
Final transmission oil ............................... 6-15Front and rear brake lever free play ........ 6-23
Front and rear brake pads, checking....... 6-24
Front fork, checking ................................. 6-28
Front turn signal light ............................... 6-34
Fuel ......................................................... 3-15
Fuel consumption, tips for reducing .......... 5-3
Fuel tank cap ........................................... 3-14
Fuses, replacing ...................................... 6-31
H
Handlebar switches ................................. 3-10
Hazard switch .......................................... 3-11
Headlight bulb, replacing ......................... 6-33
High beam indicator light ........................... 3-3
Horn switch.............................................. 3-10
I
Identification numbers ............................... 9-1
Ignition circuit cut-off system ................... 3-22
Immobilizer system.................................... 3-1
Immobilizer system indicator light ............. 3-4
Indicator and warning lights....................... 3-3
L
License plate light bulb, replacing ........... 6-35
M
Main switch/steering lock .......................... 3-2
Maintenance and lubrication, periodic ....... 6-4
Maintenance, emission control system ..... 6-3
Matte color, caution ................................... 7-1
Model label ................................................ 9-1
Multi-function display ................................. 3-5
P
Parking ...................................................... 5-4
Part locations............................................. 2-1
Pass switch ............................................. 3-10
R
Rear brake lock lever .............................. 3-12
Rear brake lock lever cable, adjusting .... 6-24
Rider seat, adjusting ............................... 3-18
S
Safe-riding points ...................................... 1-5
Safety information ..................................... 1-1
Seats ....................................................... 3-17
Shock absorber assemblies,
adjusting ............................................... 3-21
Sidestand ................................................ 3-21
Spark plug, checking............................... 6-10
Specifications ............................................ 8-1
Speedometer ............................................ 3-5
Starting off................................................. 5-2
Starting the engine .................................... 5-1
Start switch ............................................. 3-10
Steering, checking .................................. 6-29
Storage ..................................................... 7-3
Storage compartments............................ 3-19
T
Tachometer ............................................... 3-5
Tail/brake light......................................... 6-34
Throttle cable free play, checking ........... 6-20
Throttle grip and cable, checking and
lubricating ............................................. 6-27
Tires ........................................................ 6-21
Tool kit ...................................................... 6-1
Troubleshooting ...................................... 6-36
Troubleshooting charts ........................... 6-37
Turn signal indicator lights ........................ 3-3
Turn signal light bulb (rear), replacing .... 6-34
Turn signal switch ................................... 3-10