TABLE OF CONTENTSSAFETY 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 lights and warning
lights............................................ 3-3
Speedometer .................................. 3-5
Tachometer .................................... 3-6
Multi-function display ..................... 3-6
Anti-theft alarm (optional) ............. 3-10
Handlebar switches ...................... 3-10
Front brake lever .......................... 3-11
Rear brake lever ........................... 3-12
ABS (for ABS models) .................. 3-12
Fuel tank cap ................................ 3-13
Fuel ............................................... 3-14
Catalytic converters...................... 3-15
Seat .............................................. 3-16
Storage compartments................. 3-16
Adjusting the shock absorber
assemblies ................................ 3-18
Sidestand ..................................... 3-18
Ignition circuit cut-off system ....... 3-19FOR 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 ........ 5-3
Braking ............................................ 5-3
Tips for reducing fuel
consumption ................................ 5-4
Engine break-in ............................... 5-4
Parking ............................................ 5-5
PERIODIC MAINTENANCE AND
ADJUSTMENT................................... 6-1
Owner’s tool kit ............................... 6-2
Periodic maintenance chart for the
emission control system .............. 6-3
General maintenance and
lubrication chart ........................... 6-4
Removing and installing panels ...... 6-8
Checking the spark plug ............... 6-11
Engine oil and oil filter element ..... 6-13
Final transmission oil..................... 6-15
Coolant.......................................... 6-16
Air filter elements and check
hoses and V-belt case air filter
element ...................................... 6-18
Checking the throttle grip free
play ............................................ 6-20Valve clearance............................. 6-20
Tires .............................................. 6-21
Cast wheels .................................. 6-22
Checking the front and rear brake
lever free play ............................ 6-23
Checking the front and rear brake
pads .......................................... 6-24
Checking the brake fluid level ...... 6-24
Changing the brake fluid .............. 6-26
Checking and lubricating the
cables ........................................ 6-26
Checking and lubricating the
throttle grip and cable ............... 6-26
Lubricating the front and rear
brake levers ............................... 6-27
Checking and lubricating the
centerstand and sidestand........ 6-27
Checking the front fork ................. 6-28
Checking the steering................... 6-29
Checking the wheel bearings ....... 6-29
Battery .......................................... 6-29
Replacing the fuses ...................... 6-31
Replacing a headlight bulb ........... 6-32
Tail/brake light .............................. 6-33
Front turn signal light .................... 6-33
Replacing a rear turn signal light
bulb ........................................... 6-33
Replacing the license plate light
bulb ........................................... 6-34
Auxiliary light ................................ 6-35
Troubleshooting............................ 6-35U1SDE1E0.book Page 1 Monday, September 23, 2013 3:55 PM
DESCRIPTION
2-2
2
EAU10421
Right view
7
5 6 1
2
4
3
1. Grab bar (page 5-2)
2. Seat (page 3-16)
3. Fuel tank cap (page 3-13)
4. Fuses (page 6-31)
5. Centerstand (page 6-27)
6. Air filter element (right) (page 6-18)
7. Shock absorber assembly spring preload adjusting ring (page 3-18)
U1SDE1E0.book Page 2 Monday, September 23, 2013 3:55 PM
INSTRUMENT AND CONTROL FUNCTIONS
3-13
3 wheel hubs may be damaged, re-
sulting in improper performance of
the ABS system.
EAUM2991
Fuel tank capTo open the fuel tank cap
1. Insert the key into the lock and
turn it counterclockwise. The lock
will be released and the lid can be
pulled open.
2. To remove the fuel tank cap, turn
it counterclockwise and then pull it
off.
To close the fuel tank cap
1. Place the fuel tank cap onto the
fuel tank opening and turn the fuel
tank cap clockwise.
WARNING
EWA11092
Make sure that the fuel tank cap is
properly closed after filling fuel.
Leaking fuel is a fire hazard.2. Close the lid, turn the key clock-
wise to the original position, and
then remove it.
1. Front wheel hub
1. Rear wheel hub
1
1
1. Fuel tank cap
2. Fuel tank cap coverZAUM1014
12
U1SDE1E0.book Page 13 Monday, September 23, 2013 3:55 PM
INSTRUMENT AND CONTROL FUNCTIONS
3-14
3
EAU13222
FuelMake sure there is sufficient gasoline in
the tank.
WARNING
EWA10882
Gasoline and gasoline vapors are
extremely flammable. To avoid fires
and explosions and to reduce the
risk of injury when refueling, follow
these instructions.1. Before refueling, turn off the en-
gine and be sure that no one is sit-
ting on the vehicle. Never refuel
while smoking, or while in the vi-
cinity of sparks, open flames, or
other sources of ignition such as
the pilot lights of water heaters
and clothes dryers.
2. Do not overfill the fuel tank. When
refueling, be sure to insert the
pump nozzle into the fuel tank filler
hole. Stop filling when the fuel
reaches the bottom of the filler
tube. Because fuel expands when
it heats up, heat from the engine or
the sun can cause fuel to spill out
of the fuel tank.3. Wipe up any spilled fuel immedi-
ately. NOTICE: Immediately
wipe off spilled fuel with a clean,
dry, soft cloth, since fuel may
deteriorate painted surfaces or
plastic parts.
[ECA10072]
4. Be sure to securely close the fuel
tank cap.
WARNING
EWA15152
Gasoline is poisonous and can cau-
se injury or death. Handle gasoline
with care. Never siphon gasoline by
mouth. If you should swallow some
gasoline or inhale a lot of gasoline
vapor, or get some gasoline in your
eyes, see your doctor immediately. Ifgasoline spills on your skin, wash
with soap and water. If gasoline
spills on your clothing, change your
clothes.
EAUM3110
NOTICE
ECA11401
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the valves and piston rings,
as well as to the exhaust system.Your Yamaha engine has been de-
signed to use premium unleaded gas-
oline with a research octane number of
95 or higher. If knocking (or pinging)
occurs, use a gasoline of a different
1. Fuel tank filler tube
2. Maximum fuel levelZAUM1015
12
Recommended fuel:
Premium unleaded gasoline (Gaso-
hol (E10) acceptable)
Fuel tank capacity:
14.0 L (3.70 US gal, 3.08 Imp.gal)
Fuel reserve amount (when the fuel
level warning indicator flashes):
2.0 L (0.53 US gal, 0.44 Imp.gal)
U1SDE1E0.book Page 14 Monday, September 23, 2013 3:55 PM
SCOOTER CARE AND STORAGE
7-4
7
EAU36564
StorageShort-term
Always store your scooter in a cool, dry
place and, if necessary, protect it
against dust with a porous cover. Be
sure the engine and the exhaust sys-
tem are cool before covering the
scooter.NOTICE
ECA10821
Storing 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.
To 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 several
months:
1. Follow all the instructions in the
“Care” section of this chapter.2. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
3. Perform the following steps to
protect the cylinder, piston rings,
etc. from corrosion.
a. Remove the spark plug cap
and spark plug.
b. Pour a teaspoonful of engine
oil into the spark plug bore.
c. Install the spark plug cap onto
the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several
times with the starter. (This will
coat the cylinder wall with oil.)
e. Remove the spark plug cap
from the spark plug, and then
install the spark plug and the
spark plug cap. WARNING! To
prevent damage or injury
from sparking, make sure to
ground the spark plug elec-
trodes while turning the en-
gine over.
[EWA10952]
4. Lubricate all control cables and
the pivoting points of all levers and
pedals as well as of the side-
stand/centerstand.
5. 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.
6. Cover the muffler outlet with a
plastic bag to prevent moisture
from entering it.
7. Remove the battery and fully char-
ge it. Store it in a cool, dry place
and charge it once a month. Do
not store the battery in an exces-
sively 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
6-29.TIPMake any necessary repairs before
storing the scooter.
U1SDE1E0.book Page 4 Monday, September 23, 2013 3:55 PM
SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2190 mm (86.2 in)
Overall width:
780 mm (30.7 in)
Overall height:
1385 mm (54.5 in)
Seat height:
785 mm (30.9 in)
Wheelbase:
1565 mm (61.6 in)
Ground clearance:
103 mm (4.06 in)
Minimum turning radius:
2500 mm (98.4 in)Weight:Curb weight:
YP400R 211 kg (465 lb)
YP400RA 215 kg (474 lb)Engine:Engine type:
Liquid cooled 4-stroke, DOHC
Cylinder arrangement:
Single cylinder
Displacement:
395 cm³
Bore × stroke:
83.0 × 73.0 mm (3.27 × 2.87 in)
Compression ratio:
10.60 : 1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-30, 10W-40, 10W-50, 15W-40,
20W-40 or 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO
standard MA
Engine oil quantity:
Without oil filter element replacement:
1.50 L (1.59 US qt, 1.32 Imp.qt)
With oil filter element replacement:
1.70 L (1.80 US qt, 1.50 Imp.qt)Final transmission oil:Type:
YAMALUBE 10W-40 or SAE 10W-30 type
SE motor oil
Quantity:
0.25 L (0.26 US qt, 0.22 Imp.qt)
Cooling system:Coolant reservoir capacity (up to the
maximum level mark):
0.31 L (0.33 US qt, 0.27 Imp.qt)
Radiator capacity (including all routes):
1.38 L (1.46 US qt, 1.21 Imp.qt)Air filter:Air filter element:
Oil-coated paper elementFuel:Recommended fuel:
Premium unleaded gasoline (Gasohol (E10)
acceptable)
Fuel tank capacity:
14.0 L (3.70 US gal, 3.08 Imp.gal)
Fuel reserve amount:
2.0 L (0.53 US gal, 0.44 Imp.gal)Fuel injection:Throttle body:
ID mark:
5RUG 20Spark plug(s):Manufacturer/model:
NGK/CR7E
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)Clutch:Clutch type:
Dry, centrifugal automaticTransmission:Primary reduction ratio:
1.000
Final drive:
Gear
–20 –10 0
1020 30 40 50 C 10 30 50 70 90 110 0 130 F
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U1SDE1E0.book Page 1 Monday, September 23, 2013 3:55 PM
10-1
10
INDEX
AABS (for ABS models) .......................... 3-12
ABS warning light (for ABS models) ....... 3-4
Acceleration and deceleration ................ 5-3
Air filter elements and check hoses
and V-belt case air filter element ....... 6-18
Anti-theft alarm (optional) ..................... 3-10
Auxiliary light ........................................ 6-35BBattery .................................................. 6-29
Brake fluid, changing............................ 6-26
Brake fluid level, checking.................... 6-24
Brake lever, front .................................. 3-11
Brake lever, rear ................................... 3-12
Brake levers, lubricating ....................... 6-27
Braking ................................................... 5-3CCables, checking and lubricating ......... 6-26
Care ........................................................ 7-1
Catalytic converters.............................. 3-15
Centerstand and sidestand, checking
and lubricating ................................... 6-27
Coolant ................................................. 6-16DDimmer switch...................................... 3-11EEngine break-in ...................................... 5-4
Engine oil and oil filter element............. 6-13
Engine trouble warning light ................... 3-4FFinal transmission oil ............................ 6-15
Front and rear brake lever free play,
checking ............................................. 6-23
Front and rear brake pads, checking ... 6-24Front fork, checking ............................. 6-28
Front turn signal light ........................... 6-33
Fuel ...................................................... 3-14
Fuel consumption, tips for reducing ...... 5-4
Fuel tank cap........................................ 3-13
Fuses, replacing ................................... 6-31
HHandlebar switches ............................. 3-10
Hazard switch ...................................... 3-11
Headlight bulb, replacing ..................... 6-32
High beam indicator light ....................... 3-4
Horn switch .......................................... 3-11IIdentification numbers ........................... 9-1
Ignition circuit cut-off system .............. 3-19
Immobilizer system ................................ 3-1
Immobilizer system indicator light ......... 3-4
Indicator lights and warning lights ......... 3-3LLicense plate light bulb, replacing ....... 6-34MMain 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............................. 3-6PPanels, removing and installing ............. 6-8
Parking ................................................... 5-5
Part locations ......................................... 2-1
Pass switch .......................................... 3-11
SSafe-riding points ................................... 1-5
Safety information................................... 1-1
Seat....................................................... 3-16
Shock absorber assemblies,
adjusting ............................................. 3-18
Sidestand.............................................. 3-18
Spark plug, checking ............................ 6-11
Specifications ......................................... 8-1
Speedometer .......................................... 3-5
Starting off .............................................. 5-2
Starting the engine ................................. 5-1
Start switch ........................................... 3-11
Steering, checking ................................ 6-29
Storage ................................................... 7-4
Storage compartments ......................... 3-16TTachometer............................................. 3-6
Tail/brake light ...................................... 6-33
Throttle grip and cable, checking and
lubricating ........................................... 6-26
Throttle grip free play, checking ........... 6-20
Tires ...................................................... 6-21
Tool kit .................................................... 6-2
Troubleshooting .................................... 6-35
Troubleshooting charts ......................... 6-36
Turn signal indicator lights...................... 3-3
Turn signal light bulb (rear),
replacing ............................................. 6-33
Turn signal switch ................................. 3-11VValve clearance..................................... 6-20
Vehicle identification number ................. 9-1
U1SDE1E0.book Page 1 Monday, September 23, 2013 3:55 PM