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
Main switch/steering lock ................3-1
Indicator lights and warning light ....3-2
Speedometer unit (NS50N) .............3-3
Multi-function display (NS50)...........3-4
Handlebar switches ........................3-6
Front brake lever ............................3-7
Rear brake lever .............................3-7
Fuel and 2-stroke engine oil tank
caps .............................................3-8
Fuel .................................................3-9
Catalytic converter ........................3-10
2-stroke engine oil ........................3-10
Kickstarter .....................................3-11
Seats ............................................3-11
Storage compartment ...................3-12
Adjusting the shock absorber
assembly (if equipped) ...............3-13FOR YOUR SAFETY –
PRE-OPERATION CHECKS............. 4-1
OPERATION AND IMPORTANT
RIDING POINTS................................. 5-1
Starting a cold engine .................... 5-1
Starting off ...................................... 5-2
Acceleration and deceleration ........ 5-2
Braking ........................................... 5-2
Tips for reducing fuel
consumption ............................... 5-3
Engine break-in .............................. 5-3
Parking ........................................... 5-4
PERIODIC MAINTENANCE AND
ADJUSTMENT................................... 6-1
Periodic maintenance chart for
the emission control system ....... 6-2
General maintenance and
lubrication chart .......................... 6-3
Removing and installing the cowling
and panel .................................... 6-6
Checking the spark plug ................. 6-7
Final transmission oil ...................... 6-8
Coolant ........................................... 6-9
Cleaning the air filter element ...... 6-10
Adjusting the carburetor ............... 6-11
Checking the throttle grip free
play ........................................... 6-11
Tires ............................................. 6-12
Cast wheels .................................. 6-14Checking the front and rear brake
lever free play ........................... 6-14
Checking the front and rear brake
pads .......................................... 6-15
Checking the brake fluid level ...... 6-15
Changing the brake fluid .............. 6-16
Checking and lubricating
the throttle grip and cable ......... 6-17
Lubricating the front and rear
brake levers .............................. 6-17
Checking and lubricating the
centerstand ............................... 6-17
Checking the front fork ................. 6-18
Checking the steering .................. 6-19
Checking the wheel bearings ....... 6-19
Battery ......................................... 6-19
Replacing the fuse ....................... 6-21
Replacing the headlight bulb ....... 6-22
Replacing the tail/brake light
bulb ........................................... 6-23
Replacing a turn signal light
bulb ........................................... 6-23
License plate light ........................ 6-24
Replacing the auxiliary light bulb
(if equipped) .............................. 6-24
Troubleshooting ........................... 6-25
Troubleshooting charts ................ 6-26
SCOOTER CARE AND STORAGE... 7-1
Matte color caution ........................ 7-1
Care ............................................... 7-1U1PHE0E0.book Page 1 Wednesday, August 29, 2012 4:42 PM
DESCRIPTION
2-1
2
EAU10410
Left view
NS50N
NS50N
12
34
5
6
7
1. Coolant reservoir cap (page 6-9)
2. Storage compartment (page 3-12)
3. Air filter element (page 6-10)
4. Kickstarter (page 3-11)
5. Final transmission oil filler cap (page 6-8)
6. Shock absorber assembly spring preload adjusting ring (page 3-13)
7. Final transmission oil drain bolt (page 6-8)U1PHE0E0.book Page 1 Wednesday, August 29, 2012 4:42 PM
FOR YOUR SAFETY – PRE-OPERATION CHECKS
4-1
4
EAU15596
Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always follow the inspection
and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWA11151
Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage.
Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided in
this manual, have the vehicle inspected by a Yamaha dealer.Before using this vehicle, check the following points:
ITEM CHECKS PAGE
Fuel Check fuel level in fuel tank.
Refuel if necessary.
Check fuel line for leakage.3-9
2-stroke engine oil Check oil level in oil tank.
If necessary, add recommended oil to specified level.
Check vehicle for oil leakage.3-10
Final transmission oil Check vehicle for oil leakage. 6-8
Coolant Check coolant level in reservoir.
If necessary, add recommended coolant to specified level.
Check cooling system for leakage.6-9
Front brake Check operation.
If soft or spongy, have Yamaha dealer bleed hydraulic system.
Check brake pads for wear.
Replace if necessary.
Check fluid level in reservoir.
If necessary, add specified brake fluid to specified level.
Check hydraulic system for leakage.6-14, 6-15, 6-15
U1PHE0E0.book Page 1 Wednesday, August 29, 2012 4:42 PM
OPERATION AND IMPORTANT RIDING POINTS
5-4
51000 km (600 mi) and beyond
Avoid prolonged full throttle operation.
Vary speeds occasionally. NOTICE:
After 1000 km (600 mi) of operation,
the final transmission oil must be
changed.
[ECAM1071]
NOTICE
ECA10270
If any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the vehicle.
EAU17213
Parking When parking, stop the engine, and
then remove the key from the main
switch.
WARNING
EWA10311
●
Since the engine and exhaust
system can become very hot,
park in a place where pedestri-
ans or children are not likely to
touch them and be burned.
●
Do not park on a slope or on soft
ground, otherwise the vehicle
may overturn, increasing the
risk of a fuel leak and fire.
●
Do not park near grass or other
flammable materials which
might catch fire.
U1PHE0E0.book Page 4 Wednesday, August 29, 2012 4:42 PM
PERIODIC MAINTENANCE AND ADJUSTMENT
6-4
6
9*Wheel bearings • Check bearing for looseness or
damage. √√√√
10 *Steering bearings Check bearing play and steering
for roughness. √√√√√
Lubricate with lithium-soap-based grease. Every 24000 km (14000 mi)
11 *Chassis fasteners Make sure that all nuts, bolts and
screws are properly tightened. √√√√√
12 Front brake lever
pivot shaft
Lubricate with silicone grease.
√√√√√
13 Rear brake lever
pivot shaft Lubricate with silicone grease.
√√√√√
14 Centerstand Check operation.
Lubricate. √√√√√
15 *Front fork Check operation and for oil leak-
age. √√√√
16 *Shock absorber as-
sembly Check operation and shock ab-
sorber for oil leakage. √√√√
17 *Autolube pump Check operation.
Bleed if necessary. √√√√
18 *Cooling system Check coolant level and vehicle
for coolant leakage. √√√√√
Change coolant. Every 3 years
19 Final transmission
oil Check vehicle for oil leakage.
√√ √
Change. √√√
20 *V- b e l t Replace. Every 10000 km (6000 mi)
NO. ITEM CHECK OR MAINTENANCE JOB
ODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi) 6000 km
(3500 mi) 12000 km
(7000 mi) 18000 km
(10500 mi) 24000 km
(14000 mi)
U1PHE0E0.book Page 4 Thursday, February 21, 2013 2:56 PM
PERIODIC MAINTENANCE AND ADJUSTMENT
6-8
6
EAU20066
Final transmission oil The final transmission case must be
checked for oil leakage before each
ride. If any leakage is found, have a
Yamaha dealer check and repair the
scooter. In addition, the final transmis-
sion oil must be changed as follows at
the intervals specified in the periodic
maintenance and lubrication chart.
1. Start the engine, warm up the final
transmission oil by riding the
scooter for several minutes, and
then stop the engine.
2. Place the scooter on the center-
stand.
3. Place an oil pan under the final
transmission case to collect the
used oil.
4. Remove the final transmission oil
filler cap and its O-ring from the fi-
nal transmission case.5. Remove the final transmission oil
drain bolt and its gasket to drain
the oil from the final transmission
case.
6. Install the final transmission oil
drain bolt and its new gasket, and
then tighten the bolt to the speci-
fied torque.
7. Refill with the specified amount of
the recommended final transmis-
sion oil. WARNING! Make sure
that no foreign material entersthe final transmission case.
Make sure that no oil gets on the
tire or wheel.
[EWA11311]
8. Install the final transmission oil fill-
er cap and its new O-ring, and then
tighten the oil filler cap.
9. Check the final transmission case
for oil leakage. If oil is leaking,
check for the cause.
1. Final transmission oil drain bolt
2. Final transmission oil filler capTightening torque:
Final transmission oil drain bolt:
18 Nm (1.8 m·kgf, 13 ft·lbf)
12
ZAUM0273
Recommended final transmission
oil:
See page 8-1.
Oil quantity:
0.11 L (0.12 US qt, 0.10 Imp.qt)
U1PHE0E0.book Page 8 Wednesday, August 29, 2012 4:42 PM
SPECIFICATIONS
8-1
8
Dimensions:Overall length:
1870 mm (73.6 in)
Overall width:
NS50 700 mm (27.6 in)
NS50N 725 mm (28.5 in)
Overall height:
NS50 1155 mm (45.5 in)
NS50N 1115 mm (43.9 in)
Seat height:
815/930 mm (32.1/36.6 in)
Wheelbase:
1275 mm (50.2 in)
Ground clearance:
130 mm (5.12 in)
Minimum turning radius:
2000 mm (78.7 in)Weight:Curb weight:
97 kg (214 lb)Engine:Engine type:
Liquid cooled 2-stroke
Cylinder arrangement:
Single cylinder
Displacement:
49 cm³
Bore × stroke:
40.0 × 39.2 mm (1.57 × 1.54 in)
Compression ratio:
11.50–12.50 : 1
Starting system:
Electric starter and kickstarterLubrication system:
Separate lubrication (Yamaha autolube)
Engine oil:Type:
YAMALUBE 2S or 2-stroke engine oil
(JASO FC grade) or (ISO EG-C or EG-D
grade)
Engine oil quantity:
Quantity:
1.40 L (1.48 US qt, 1.23 Imp.qt)Final transmission oil:Type:
SAE 10W-30 type SE motor oil
Quantity:
0.11 L (0.12 US qt, 0.10 Imp.qt)Cooling system:Coolant reservoir capacity (up to the
maximum level mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator capacity (including all routes):
1.20 L (1.27 US qt, 1.06 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
7.0 L (1.85 US gal, 1.54 Imp.gal)
Fuel reserve amount:
1.0 L (0.26 US gal, 0.22 Imp.gal)Carburetor:Type × quantity:
PHVA 12 ZS x 1
Spark plug(s):Manufacturer/model:
NGK/BR8HS
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Dry, centrifugal automaticTransmission:Primary reduction ratio:
1
Final drive:
Gear
Secondary reduction ratio:
52/13 × 43/14 (12.286)
Transmission type:
V-belt automatic
Operation:
Centrifugal automatic typeChassis:Frame type:
Underbone
Caster angle:
27.00 °
Trail:
87 mm (3.4 in)Front tire:Type:
Tubeless
Size:
120/70-13 53P(Michelin)
53L(SAVA,Metzeler)
Manufacturer/model:
MICHELIN/POWER PURE SC
U1PHE0E0.book Page 1 Wednesday, August 29, 2012 4:42 PM
INDEX22-stroke engine oil................................. 3-10AAcceleration and deceleration................. 5-2
Air filter element, cleaning..................... 6-10
Auxiliary light bulb, replacing
(if equipped)........................................ 6-24BBattery................................................... 6-19
Brake fluid, changing ............................ 6-16
Brake fluid level, checking .................... 6-15
Brake lever, front..................................... 3-7
Brake lever, rear ..................................... 3-7
Brake levers, lubricating........................ 6-17
Braking .................................................... 5-2CCarburetor,adjusting ............................. 6-11
Care ........................................................ 7-1
Catalytic converter ................................ 3-10
Centerstand, checking and
lubricating ........................................... 6-17
Coolant.................................................... 6-9
Coolant temperature warning light .......... 3-3
Cowling and panel, removing and
installing................................................ 6-6DDimmer switch ........................................ 3-7EEngine break-in ....................................... 5-3FFinal transmission oil .............................. 6-8
Front and rear brake lever free play,
checking ............................................. 6-14
Front and rear brake pads, checking .... 6-15Front fork, checking .............................. 6-18
Fuel......................................................... 3-9
Fuel and 2-stroke engine oil tank caps ... 3-8
Fuel consumption, tips for reducing........ 5-3
Fuel level warning light ........................... 3-3
Fuse, replacing ..................................... 6-21
HHandlebar switches ................................ 3-6
Headlight bulb, replacing ...................... 6-22
High beam indicator light ........................ 3-2
Horn switch ............................................. 3-7IIdentification numbers ............................ 9-1
Indicator lights and warning light ............ 3-2KKickstarter............................................. 3-11LLicense plate light ................................. 6-24MMain switch/steering lock........................ 3-1
Maintenance and lubrication, periodic .... 6-3
Maintenance, emission control
system .................................................. 6-2
Matte color, caution ................................ 7-1
Model label ............................................. 9-1
Multi-function display (NS50).................. 3-4OOil level warning light.............................. 3-2PParking ................................................... 5-4
Part locations .......................................... 2-1SSafe-riding points.................................... 1-5
Safety information................................... 1-1Seats ..................................................... 3-11
Shock absorber assembly,
adjusting (if equipped) ........................ 3-13
Spark plug, checking ............................... 6-7
Specifications .......................................... 8-1
Speedometer unit (NS50N) ..................... 3-3
Starting a cold engine ............................. 5-1
Starting off ............................................... 5-2
Start switch.............................................. 3-7
Steering, checking................................. 6-19
Storage.................................................... 7-3
Storage compartment............................ 3-12
TTail/brake light bulb, replacing .............. 6-23
Throttle grip and cable, checking and
lubricating ........................................... 6-17
Throttle grip free play, checking ............ 6-11
Tires ...................................................... 6-12
Troubleshooting .................................... 6-25
Troubleshooting charts.......................... 6-26
Turn signal indicator light ........................ 3-2
Turn signal light bulb, replacing ............ 6-23
Turn signal switch ................................... 3-7VVehicle identification number .................. 9-1WWheel bearings, checking ..................... 6-19
Wheels .................................................. 6-14
U1PHE0E0.book Page 1 Wednesday, August 29, 2012 4:42 PM