2009 YAMAHA PW50 Owners Manual

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INSTRUMENT AND CONTROL FUNCTIONS
EAU40660
Handlebar switch
EAU40674
Engine stop switch “OFF/RUN/
START”
Set this switch to “START” before start-
ing the engine. Set this switch to “RUN”
after warming up the engine or before
starting off. Set this switch to “OFF” to
stop the engine.
TIP


The engine cannot be started with
this switch set to the “RUN” posi-
tion.

The engine speed is limited while
this switch is set to the “START”
position, therefore the motorcyclecannot be ridden in that switch po-
sition.
EAU41041
Speed limiter and power
reduction plate
Your motorcycle was delivered with an
adjustable speed limiter and a power
reduction plate. The speed limiter
keeps the throttle from fully opening,
even when the throttle grip is turned to
the maximum. The power reduction
plate is installed in the exhaust mani-
fold to limit the amount of power avail-
able while they learn.
Speed limiter
1. Loosen the locknut.
2. To increase the maximum engine
power available and the maximum
speed of the motorcycle, turn the
adjusting screw in direction (a). To
decrease the maximum engine
power available and the maximum
speed of the motorcycle, turn the
adjusting screw in direction (b).
1. Engine stop switch “OFF/RUN/START”
1

INSTRUMENT AND CONTROL FUNCTIONS
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3. Tighten the locknut.
TIP

The adjusting range of the speed limiter
screw is from the fully turned-in position
to 7 mm (0.28 in) turned out. When thescrew is turned out to 7 mm (0.28 in),
the throttle grip can only be opened ap-
proximately halfway. If more power is
required, please consult a Yamaha
dealer.
WARNING

EWA14630
Improper adjustment of the speed
limiter could cause improper throttle
operation. You could lose control,
have an accident or be injured. Do
not turn the adjusting screw out
more than 7 mm (0.28 in) before con-
sulting a Yamaha dealer. Always
make sure the throttle cable free
play is adjusted to 1.5–3.5 mm
(0.06–0.14 in). (See page 6-11.)
Power reduction plate
Once the rider can operate with skill at
the top speed permitted by adjusting
the speed limiter alone, the power re-
duction plate can be removed. (See
page 6-6.)
EAU12890
Brake lever
The brake lever is located at the right
handlebar grip. To apply the front
brake, pull the lever toward the handle-
bar grip.
1. Locknut
2. Adjusting screw
1. No more than 7 mm (0.28 in)
1
(a)(b)2
1

1. Front brake lever
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INSTRUMENT AND CONTROL FUNCTIONS
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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.
EAU13221
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. 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.
1. Rear brake lever
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1. Fuel tank cap
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INSTRUMENT AND CONTROL FUNCTIONS
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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 inyour 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.
EAU41981
For Canada
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 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 agasoline 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.
Except for Canada
NOTICE

ECA15590
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
1. Fuel tank filler tube
2. Fuel level
2 1

Recommended fuel:
REGULAR UNLEADED GASOLINE
ONLY
Fuel tank capacity:
2.0 L (0.53 US gal, 0.44 Imp.gal)
Recommended fuel:
For Europe: REGULAR UNLEADED
GASOLINE ONLY
Except for Canada and Europe: UN-
LEADED GASOLINE ONLY
Fuel tank capacity:
2.0 L (0.53 US gal, 0.44 Imp.gal)

INSTRUMENT AND CONTROL FUNCTIONS
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9 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.
EAU13452
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.
TIP

Make sure that the 2-stroke engine oil
tank cap is properly installed.
1. Fuel tank breather hose
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1. 2-stroke engine oil tank cap
2. Minimum level mark
Recommended oil:
See page 8-1.
Oil quantity:
0.30 L (0.32 US qt, 0.26 Imp.qt)
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INSTRUMENT AND CONTROL FUNCTIONS
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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)
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1. Starter (choke) lever “ ”
1 (a)
(b)

INSTRUMENT AND CONTROL FUNCTIONS
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EAU13680
Kickstarter
To start the engine, fold out the kick-
starter lever, move it down lightly with
your foot until the gears engage, and
then push it down smoothly but force-
fully.
EAU40920
Seat
To remove the seat
1. Remove the mudguard by remov-
ing the bolts and washers.
2. Pull the seat off.
To install the seat
1. Insert the projection on the front of
the seat into the seat holder as
shown.2. Place the seat in the original posi-
tion.
3. Install the mudguard by installing
the washers and bolts.
TIP

Make sure that the seat is properly se-
cured before riding.
1. Kickstarter
1

1. Bolt
2. Mudguard
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1. Seat holder
2. Projection
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FOR YOUR SAFETY – PRE-OPERATION CHECKS
EAU15595
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: