2011 YAMAHA PW50 fuel

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 ................................................ 4-7FOR YOUR SAFETY –
PRE-OPERATION CHECKS............. 5-1
OPERATION AND IMPORTANT
RIDING POINTS................................ 6-1
Starting 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 .............................. 7-2
Periodic maintenance chart for the
emission control system ............. 7-3
General maintenance and
lubrication chart .......................... 7-4
Checking the spark plug ................ 7-6
Removing the power reduction
plate ............................................ 7-7
Transmission oil ............................. 7-8
Middle and final gear cases ........... 7-9
Cleaning the air filter element ........ 7-9
Cleaning the spark arrester ......... 7-10
Adjusting the carburetor ............... 7-11
Adjusting the engine idling
speed ........................................ 7-11Checking the throttle cable free
play ........................................... 7-12
Tires ............................................. 7-12
Panel wheels ................................ 7-13
Adjusting the front and rear brake
lever free play ........................... 7-14
Checking the front and rear brake
shoes ........................................ 7-15
Checking and lubricating the
cables ....................................... 7-15
Checking and lubricating the
throttle grip and cable ............... 7-16
Adjusting the Autolube pump ....... 7-16
Lubricating the front and rear
brake levers .............................. 7-16
Checking and lubricating the
centerstand ............................... 7-17
Checking the front fork ................. 7-17
Checking the steering .................. 7-18
Checking the wheel bearings ....... 7-18
Front wheel .................................. 7-18
Rear wheel ................................... 7-20
Troubleshooting ........................... 7-23
Troubleshooting chart .................. 7-24
MOTORCYCLE CARE AND
STORAGE.......................................... 8-1
Matte color caution ......................... 8-1
Care ............................................... 8-1
Storage ........................................... 8-3
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SAFETY INFORMATION
2-4
2 cornering clearance, limit suspen-
sion travel, steering travel or con-
trol operation.
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, anelectric failure could result, which
could cause a dangerous loss of
lights 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 7-12 for tire
specifications and more information on
replacing your tires.
Transporting the motorcycle
Be sure to observe following instruc-
tions before transporting the motorcy-
cle in another vehicle.


Remove all loose items from the
motorcycle.


Check that the fuel cock (if
equipped) is in the “OFF” position
and that there are no fuel leaks.


Point the front wheel straight
ahead on the trailer or in the truck
bed, and choke it in a rail to pre-
vent movement.


Shift the transmission in gear (for
models with a manual transmis-
sion).


Secure the motorcycle with tie-
downs or suitable straps that are
attached to solid parts of the mo-
torcycle, such as the frame or up-
per front fork triple clamp (and not,
for example, to rubber-mounted
handlebars or turn signals, or parts
that could break). Choose the lo-
cation for the straps carefully so
the straps will not rub against
painted surfaces during transport.


The suspension should be com-
pressed somewhat by the tie-
downs, if possible, so that the mo-
torcycle will not bounce excessive-
ly during transport.
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DESCRIPTION
3-1
3
EAU10410
Left view
1
2
3
45
6
1. Spark plug (page 7-6)
2. Fuel cock (page 4-6)
3. Throttle stop screw (page 7-11)
4. Air filter element (page 7-9)
5. Kickstarter (page 4-7)
6. Centerstand (page 7-17)U5PG8AE0.book Page 1 Thursday, April 8, 2010 8:37 AM

DESCRIPTION
3-3
3
EAU10430
Controls and instruments
12
7 345
6
1. Rear brake lever (page 4-3)
2. Starter (choke) lever (page 4-6)
3. 2-stroke engine oil tank cap (page 4-5)
4. Engine stop switch (page 4-1)
5. Front brake lever (page 4-2)
6. Throttle grip (page 7-12)
7. Fuel tank cap (page 4-3)U5PG8AE0.book Page 3 Thursday, April 8, 2010 8:37 AM

INSTRUMENT AND CONTROL FUNCTIONS
4-3
4
EAU12950
Rear brake lever The rear brake lever is located on the
left handlebar grip. To apply the rear
brake, pull this lever toward the handle-
bar grip.
EAU13182
Fuel tank cap To remove the fuel tank cap, turn it
counterclockwise, and then pull it off.
To install the fuel tank cap, insert it into
the tank opening, and then turn it clock-
wise.
WARNING
EWA11091
Make sure that the fuel tank cap is
properly closed after filling fuel.
Leaking fuel is a fire hazard.
EAU13212
Fuel Make sure there is sufficient gasoline in
the tank.
WARNING
EWA10881
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. 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.
1. Rear brake lever
1
1. Fuel tank cap
1
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INSTRUMENT AND CONTROL FUNCTIONS
4-4
4
3. Wipe up any spilled fuel immedi-
ately. NOTICE: Immediately wipe
off spilled fuel with a clean, dry,
soft cloth, since fuel may deteri-
orate painted surfaces or plastic
parts.
[ECA10071]
4. Be sure to securely close the fuel
tank cap.
WARNING
EWA15151
Gasoline is poisonous and can
cause injury or death. Handle gaso-
line with care. Never siphon gaso-
line by mouth. If you should swallow
some gasoline or inhale a lot of gas-
oline vapor, or get some gasoline in
your eyes, see your doctor immedi-ately. If gasoline spills on your skin,
wash with soap and water. If gaso-
line spills on your clothing, change
your clothes.
EAU41982
For CanadaNOTICE
ECA15590
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the piston rings as well as to
the exhaust system.Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line with a pump octane number
[(R+M)/2] of 86 or higher, or a research
octane number of 91 or higher. If
knocking (or pinging) occurs, use a
gasoline of a different brand or premi-um unleaded fuel. Use of unleaded fuel
will extend spark plug life and reduce
maintenance cost.
Gasohol
There are two types of gasohol: gaso-
hol containing ethanol and that contain-
ing methanol. Gasohol containing
ethanol can be used if ethanol content
does not exceed 10% (E10). Gasohol
containing methanol is not recom-
mended by Yamaha because it can
cause damage to the fuel system or ve-
hicle performance problems.
For Europe, Oceania and South Afri-
ca
1. Fuel tank filler tube
2. Maximum fuel level
2 1
Recommended fuel:
REGULAR UNLEADED GASO-
LINE ONLY
Fuel tank capacity:
2.0 L (0.53 US gal, 0.44 Imp.gal)
Recommended fuel:
For Europe and South Africa: REG-
ULAR UNLEADED GASOLINE
ONLY
For Oceania: UNLEADED GASO-
LINE ONLY
Fuel tank capacity:
2.0 L (0.53 US gal, 0.44 Imp.gal)
U5PG8AE0.book Page 4 Thursday, April 8, 2010 8:37 AM

INSTRUMENT AND CONTROL FUNCTIONS
4-5
4
NOTICE
ECA15590
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the piston rings as well as to
the exhaust system.Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line with a research octane number of
91 or higher. If knocking (or pinging) oc-
curs, use a gasoline of a different brand
or premium unleaded fuel. Use of un-
leaded fuel will extend spark plug life
and reduce maintenance costs.
EAU13412
Fuel tank breather hose Before operating the motorcycle:

Check the fuel tank breather hose
connection.


Check the fuel tank breather hose
for cracks or damage, and replace
it if damaged.


Make sure that the fuel tank
breather hose is not blocked, and
clean it if necessary.
EAU13453
2-stroke engine oil Make sure that there is sufficient 2-
stroke engine oil in the oil tank. Add the
recommended 2-stroke engine oil as
necessary.NOTICE
ECA16670
Make sure that the 2-stroke engine
oil tank cap is properly installed.
1. Fuel tank breather hose
1
1. 2-stroke engine oil tank cap
2. Minimum level mark
Recommended oil:
See page 9-1.
Oil quantity:
0.30 L (0.32 US qt, 0.26 Imp.qt)
21
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INSTRUMENT AND CONTROL FUNCTIONS
4-6
4
EAU40701
Fuel cock The fuel cock supplies fuel from the
tank to the carburetor while filtering it al-
so.
The fuel cock has two positions:
S (stop)
With the lever in this position, fuel will
not flow. Always return the lever to this
position when the engine is not running.O (on)
With the lever in this position, fuel flows
to the carburetor. Normal riding is done
with the lever in this position.
EAU13590
Starter (choke) lever“” Starting a cold engine requires a richer
air-fuel mixture, which is supplied by
the starter (choke).
Move the lever in direction (a) to turn on
the starter (choke).
Move the lever in direction (b) to turn off
the starter (choke).
1. Arrow mark pointing to “S” (stop)
1
1. Arrow mark pointing to “O” (on)
1
1. Starter (choke) lever“”
1 (a)
(b)
U5PG8AE0.book Page 6 Thursday, April 8, 2010 8:37 AM