2010 YAMAHA PW50 tires

TABLE OF CONTENTS
LOCATION OF IMPORTANT
LABELS
............................................. 1-1
SAFETY INFORMATION
.................. 2-1
DESCRIPTION
.................................. 3-1
Left view .......................................... 3-1
Right view ........................................ 3-2
Controls and instruments ................ 3-3
INSTRUMENT AND CONTROL
FUNCTIONS
....................................... 4-1
Handlebar switch ............................ 4-1
Speed limiter and power
reduction plate ............................ 4-1
Front brake lever ............................ 4-2
Rear brake lever ............................. 4-3
Fuel tank cap .................................. 4-3
Fuel ................................................ 4-3
Fuel tank breather hose ................. 4-5
2-stroke engine oil .......................... 4-5
Fuel cock ........................................ 4-6
Starter (choke) lever “ ” ............... 4-6
Kickstarter ...................................... 4-7
Seat ................................................ 4-7
FOR YOUR SAFETY –
PRE-OPERATION CHECKS
.............. 5-1
OPERATION AND IMPORTANT
RIDING POINTS
................................. 6-1Starting and warming up a cold
engine ......................................... 6-1
Starting a warm engine .................. 6-1
Starting off ...................................... 6-2
Acceleration and deceleration ........ 6-2
Braking ........................................... 6-2
Engine break-in .............................. 6-3
Parking ........................................... 6-4
PERIODIC MAINTENANCE AND
ADJUSTMENT
................................... 7-1
Owner’s tool kit ............................... 7-1
Periodic maintenance chart for
the emission control system ....... 7-2
General maintenance and
lubrication chart .......................... 7-3
Checking the spark plug ................. 7-5
Removing the power reduction
plate ............................................ 7-6
Transmission oil ............................. 7-7
Middle and final gear cases ........... 7-8
Cleaning the air filter element ........ 7-8
Cleaning the spark arrester ............ 7-9
Adjusting the carburetor ............... 7-10
Adjusting the engine idling
speed ........................................ 7-10
Checking the throttle cable free
play ........................................... 7-11
Tires ............................................. 7-11
Panel wheels ................................ 7-13Adjusting the front and rear
brake lever free play .................. 7-13
Checking the front and rear
brake shoes ............................... 7-14
Checking and lubricating the
cables ........................................ 7-15
Checking and lubricating the
throttle grip and cable ................ 7-15
Adjusting the Autolube pump ........ 7-16
Lubricating the front and rear
brake levers ............................... 7-16
Checking and lubricating the
centerstand ................................ 7-16
Checking the front fork .................. 7-17
Checking the steering ................... 7-17
Checking the wheel bearings ........ 7-18
Front wheel ................................... 7-18
Rear wheel .................................... 7-20
Troubleshooting ............................ 7-22
Troubleshooting chart ................... 7-24
MOTORCYCLE CARE AND
STORAGE
.......................................... 8-1
Matte color caution ......................... 8-1
Care ................................................ 8-1
Storage ........................................... 8-3
SPECIFICATIONS
............................. 9-1
CONSUMER INFORMATION
........... 10-1
Identification numbers ................... 10-1

LOCATION OF IMPORTANT LABELS
1-5
1
2
3
4
5
6
7
8
9
Familiarize yourself with the following pictograms and read the explanatory text.
**.* kPa
*.** kgf/cm²
*.* psi**.* kPa
*.** kgf/cm²
*.* psi
Read the Owner’s manual.
This unit contains high-pressure
nitrogen gas.
Mishandling can cause
explosion. Do not incinerate,
puncture or open.
Turn off the main switch after
riding to avoid draining the
battery.Use unleaded gasoline only.
Measure tire pressure when
tires are cold.
Adjust tire pressure.
Improper tire pressure can
cause loss of control.
Loss of control can result in
severe injury or death.

2-3
2
3
4
5
6
7
8
9

SAFETY INFORMATION
possibility of an accident, use extreme
caution when adding accessories to
your motorcycle. Use extra care when
riding a motorcycle that has added ac-
cessories. Here are some general
guidelines to follow if adding accesso-
ries to your motorcycle:
Operation of an overloaded vehicle
could cause an accident.

The weight of the operator must
not exceed 25 kg (55 lb).

Accessory weight should be kept
as low and close to the motorcycle
as possible. Securely pack your
heaviest items as close to the cen-
ter of the vehicle as possible and
make sure to distribute the weight
as evenly as possible on both
sides of the motorcycle to mini-
mize imbalance or instability.

Shifting weights can create a sud-
den imbalance. Make sure that ac-
cessories are securely attached to
the motorcycle before riding.
Check accessory mounts fre-
quently.

Properly adjust the suspensionfor your load, and check the con-
dition and pressure of your tires.

Never attach any large or heavy
items to the handlebar, front
fork, or front fender.
Genuine Yamaha Accessories
Choosing accessories for your vehicle
is an important decision. Genuine
Yamaha accessories, which are avail-
able only from a Yamaha dealer, have
been designed, tested, and approved
by Yamaha for use on your vehicle.
Many companies with no connection to
Yamaha manufacture parts and acces-
sories or offer other modifications for
Yamaha vehicles. Yamaha is not in a
position to test the products that these
aftermarket companies produce.
Therefore, Yamaha can neither en-
dorse nor recommend the use of ac-
cessories not sold by Yamaha or
modifications not specifically recom-
mended by Yamaha, even if sold and
installed by a Yamaha dealer.
Aftermarket Parts, Accessories,
and Modifications
While you may find aftermarket prod-
ucts similar in design and quality to
genuine Yamaha accessories, recog-
nize that some aftermarket accessories
or modifications are not suitable be-
cause of potential safety hazards to you
or others. Installing aftermarket prod-
ucts or having other modifications per-
formed to your vehicle that change any
of the vehicle’s design or operation
characteristics can put you and others
at greater risk of serious injury or death.
You are responsible for injuries related
to changes in the vehicle.
Keep the following guidelines in mind,
as well as those provided under “Load-
ing” when mounting accessories.


Never install accessories that
would impair the performance of
your motorcycle. Carefully inspect
the accessory before using it to
make sure that it does not in any
way reduce ground clearance or
cornering clearance, limit suspen-
sion travel, steering travel or con-
trol operation.

2-4
1
2
3
4
5
6
7
8
9

SAFETY INFORMATION

Accessories fitted to the handle-
bar or the front fork area can
create instability due to improper
weight distribution. If accesso-
ries are added to the handlebar
or front fork area, they must be
as lightweight as possible and
should be kept to a minimum.

Bulky or large accessories may
seriously affect the stability of
the motorcycle. Wind may at-
tempt to lift the motorcycle, or
the motorcycle may become un-
stable in cross winds.

Certain accessories can dis-
place the operator from his or
her normal riding position. This
improper position limits the free-
dom of movement of the opera-
tor and may limit control ability,
therefore, such accessories are
not recommended.

Use caution when adding electri-
cal accessories. If electrical acces-
sories exceed the capacity of the
motorcycle’s electrical system, an
electric failure could result, which
could cause a dangerous loss oflights or engine power.
Aftermarket Tires and Rims
The tires and rims that came with your
motorcycle were designed to match the
performance capabilities and to provide
the best combination of handling, brak-
ing, and comfort. Other tires, rims, siz-
es, and combinations may not be
appropriate. Refer to page 7-11 for tire
specifications and more information on
replacing your tires.

FOR YOUR SAFETY – PRE-OPERATION CHECKS
5-2
1
2
3
4
5
6
7
8
9

Wheels and tires

Check for damage.

Check tire condition and tread depth.

Check air pressure.

Correct if necessary.7-11, 7-13
Brake levers

Make sure that operation is smooth.

Lubricate lever pivoting points if necessary.7-16
Centerstand

Make sure that operation is smooth.

Lubricate pivot if necessary.7-16
Chassis fasteners

Make sure that all nuts, bolts and screws are properly tightened.

Tighten if necessary.—
Engine stop switch

Check operation.4-1
ITEM CHECKS PAGE

PERIODIC MAINTENANCE AND ADJUSTMENT
7-3
2
3
4
5
6
78
9

EAU41754
General maintenance and lubrication chart
NO. ITEM CHECK OR MAINTENANCE JOBINITIALTHEREAFTER
EVERY
1
month3
months6
months6
months12
months
1*Front brake
Check operation.Adjust brake lever free play.Replace brake shoes. Whenever worn to the limit
2*Rear brakeCheck operation.Adjust brake lever free play.Replace brake shoes. Whenever worn to the limit
3*WheelsCheck runout and for damage.Replace if necessary.
4*TiresCheck tread depth and for damage.Replace if necessary.Check air pressure.Correct if necessary.
5*Wheel bearingsCheck bearings for smooth operation.Replace if necessary.
6*Steering bearingsCheck bearing assemblies for looseness.Moderately repack with lithium-soap-based
grease every 2 years.
7*Middle and final gear
casesCheck for grease leakage.Check gears for damage and wear.Lubricate gears with lithium-soap-based grease.Every 2 years
8*Chassis fastenersCheck all chassis fitting and fasteners.Correct if necessary.
A 9*utolube pumpCheck operation.Correct if necessary.

PERIODIC MAINTENANCE AND ADJUSTMENT
7-11
2
3
4
5
6
78
9
gine idling speed, turn the screw in
direction (b).
TIP

If the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment.
EAU21382
Checking the throttle cable
free play
The throttle cable free play should mea-
sure 1.5–3.5 mm (0.06–0.14 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, have a Yamaha dealer adjust it.
EAU40911
Tires
To maximize the performance, durabil-
ity, and safe operation of your motorcy-
cle, note the following points regarding
the specified tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING

EWA14381
Operation of this vehicle with im-
proper tire pressure may cause se-
vere injury or death from loss of
control.

The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).

The tire air pressure must be ad-
justed in accordance with the
weight of the rider, the riding
speed, and the riding condi-
tions.
1. Throttle stop screw
Engine idling speed:
1650–1750 r/min
1(a) (b)

1. Throttle cable free play1

PERIODIC MAINTENANCE AND ADJUSTMENT
7-12
1
2
3
4
5
6
7
8
9Tire 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 sidewall is
cracked, have a Yamaha dealer re-
place the tire immediately.
Tire information
This motorcycle is equipped with panel
wheels and tube tires.
WARNING

EWA10461
The front and rear tires should be of
the same make and design, other-
wise the handling characteristics of
the vehicle may be different, which
could lead to an accident.
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha Motor Co., Ltd.
WARNING

EWA14390

Have a Yamaha dealer replace
excessively worn tires. Operat-ing the motorcycle with exces-
sively worn tires decreases
riding stability and can lead to
loss of control.

The replacement of all
wheel-and brake-related parts,
including the tires, should be
left to a Yamaha dealer, who has
the necessary professional
knowledge and experience.

It is not recommended to patch
a punctured tube. If unavoid-
able, however, patch the tube
very carefully and replace it as
soon as possible with a
high-quality product.
Standard tire air pressure:
Front:
100 kPa (1.00 kgf/cm
2

, 15 psi)
Rear:
100 kPa (1.00 kgf/cm
2

, 15 psi)
1. Tire sidewall
2. Tire tread depth
Minimum tire tread depth (front and
rear):
4.0 mm (0.16 in)
12

Front tire:
Size:
2.50-10 4PR
Manufacturer/model:
BRIDGESTONE/KNOBBY
IRC/KNOBBY
Rear tire:
Size:
2.50-10 4PR
Manufacturer/model:
BRIDGESTONE/KNOBBY
IRC/KNOBBY