2013 YAMAHA PW50 engine

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.
EAU41983
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
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.
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:REGULAR UNLEADED GASO-
LINE ONLY
Fuel tank capacity:
2.0 L (0.53 US gal, 0.44 Imp.gal)
U5PG8BE0.book Page 4 Wednesday, June 27, 2012 2:53 PM

INSTRUMENT AND CONTROL FUNCTIONS
4-5
4Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line with a research octane number of
95 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.
For South Africa
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.
For Oceania
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 unleaded gasoline with a
research octane number of 91 or high-
er. 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 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.
Recommended fuel:
REGULAR UNLEADED GASO-
LINE ONLY
Fuel tank capacity:
2.0 L (0.53 US gal, 0.44 Imp.gal)
Recommended fuel:UNLEADED GASOLINE ONLY
Fuel tank capacity: 2.0 L (0.53 US gal, 0.44 Imp.gal)
1. Fuel tank breather hose
1
U5PG8BE0.book Page 5 Wednesday, June 27, 2012 2:53 PM

INSTRUMENT AND CONTROL FUNCTIONS
4-6
4
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.
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.
1. 2-stroke engine oil tank cap
2. Minimum level markRecommended oil:
See page 9-1.
Oil quantity: 0.30 L (0.32 US qt, 0.26 Imp.qt)
2 1
1. Arrow mark pointing to “S” (stop)
1
1. Arrow mark pointing to “O” (on)
1
U5PG8BE0.book Page 6 Wednesday, June 27, 2012 2:53 PM

INSTRUMENT AND CONTROL FUNCTIONS
4-7
4
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).
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 seat1. 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.
1. Starter (choke) lever “ ”
1
(a)
(b)
1. Kickstarter
1
1. Bolt and washer
2. Mudguard
1 2
U5PG8BE0.book Page 7 Wednesday, June 27, 2012 2:53 PM

FOR YOUR SAFETY – PRE-OPERATION CHECKS
5-1
5
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:
ITEMCHECKS PAGE
Fuel Check fuel level in fuel tank.
Refuel if necessary.
Check fuel line for leakage.
Check fuel tank breather hose for obs
tructions, cracks or damage, and check
hose connection. 4-3, 4-5
2-stroke engine oil Check oil level in oil tank.
If necessary, add recommended oil to specified level.
Check vehicle for oil leakage. 4-6
Transmission oil Check oil level in transmission case.
If necessary, add recommended oil to specified level.
7-8
Middle and final gear cases Check vehicle for grease leakage. 7-9
Front brake Check operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary. 7-14, 7-15
Rear brake Check operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary.
7-14, 7-15
U5PG8BE0.book Page 1 Wednesday, June 27, 2012 2:53 PM

FOR YOUR SAFETY – PRE-OPERATION CHECKS
5-2
5
Throttle grip Make sure that operation is smooth.
Check throttle grip free play.
If necessary, have Yamaha dealer adjust throttle grip free play and lubricate cable
and grip housing. 7-12, 7-16
Control cables Make sure that operation is smooth.
Lubricate if necessary.
7-16
Wheels and tires Check for damage.
Check tire condition and tread depth.
Check air pressure.
Correct if necessary. 7-12, 7-14
Brake levers Make sure that operation is smooth.
Lubricate lever pivoting points if necessary. 7-17
Centerstand Make sure that operation is smooth.
Lubricate pivot if necessary.
7-17
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
U5PG8BE0.book Page 2 Wednesday, June 27, 2012 2:53 PM

OPERATION AND IMPORTANT RIDING POINTS
6-1
6
EAU15951
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10271
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which could cause an accident
or injury.
EAU40889
Starting and warming up a
cold engine 1. Turn the fuel cock lever to “O” (on).
2. Set the engine stop switch to“START”.
3. Turn the starter (choke) on and completely close the throttle. (See
page 4-7.)
4. While applying the front or rear brake, start the engine by pushing
the kickstarter lever down.
5. After starting the engine, move the starter (choke) back halfway.
6. When the engine is warm, turn the starter (choke) off and set the en-
gine stop switch to “RUN”.TIPThe engine is warm when it responds
quickly to the throttle with the starter
(choke) turned off.NOTICE
ECA11042
For maximum engine life, never ac-
celerate hard when the engine is
cold!
EAU16660
Starting a warm engine Follow the same procedure as for start-
ing a cold engine with the exception
that the starter (choke) is not required
when the engine is warm. Instead, start
the engine with the throttle slightly
open.TIPIf the engine does not start after several
kicks, try again with the throttle 1/4 to
1/2 open.
U5PG8BE0.book Page 1 Wednesday, June 27, 2012 2:53 PM

OPERATION AND IMPORTANT RIDING POINTS
6-2
6
EAU41002
Starting off 1. While applying the rear brake le-ver, push the motorcycle off the
centerstand.
2. Completely close the throttle.
3. Set the engine stop switch to “RUN”.
4. Check for oncoming off-road vehi- cles, and then slowly turn the throt-
tle grip in order to take off.
EAU16780
Acceleration a nd deceleration The speed can be adjusted by opening
and closing the throttle. To increase the
speed, turn the throttle grip in direction
(a). To reduce the speed, turn the throt-
tle grip in direction (b).
EAU41012
Braking
WARNING
EWA14571
●
Avoid braking hard or suddenly
(especially when leaning over to
one side), otherwise the motor-
cycle may skid or overturn.
●
Keep in mind that braking on
wet surfaces is much more diffi-
cult.
●
Ride slowly down a hill, as brak-
ing downhill can be very diffi-
cult.
1. Close the throttle completely.
2. Apply both front and rear brakes
simultaneously while gradually in-
creasing the pressure.
Front
(a) (b)
U5PG8BE0.book Page 2 Wednesday, June 27, 2012 2:53 PM