2011 YAMAHA PW50 recommended oil

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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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:
ITEM CHECKS PAGE
FuelCheck fuel level in fuel tank.
Refuel if necessary.
Check fuel line for leakage.
Check the fuel tank breather/overflow hose for obstructions, cracks or damage,
and check the hose connection.4-3, 4-5
2-stroke engine oilCheck oil level in oil tank.
If necessary, add recommended oil to specified level.
Check vehicle for oil leakage.4-5
Middle and final gear casesCheck vehicle for grease leakage. 7-9
Front brakeCheck operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary.7-14, 7-15
Rear brakeCheck operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary.7-14, 7-15
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-8
7
EAU40893
Transmission oil The transmission oil must be checked
for oil leakage before each ride. If any
leakage is found, have a Yamaha deal-
er check and repair the motorcycle. In
addition, the transmission oil must be
changed at the intervals specified in the
periodic maintenance and lubrication
chart.
1. Place the motorcycle on the cen-
terstand.
2. Place an oil pan under the trans-
mission to collect the used oil.
3. Remove the transmission oil filler
cap, the transmission oil drain bolt
and its gasket to drain the oil from
the transmission.4. Install the transmission oil drain
bolt and its new gasket, and then
tighten the bolt to the specified
torque.
5. Refill with the specified amount of
the recommended transmission
oil, and then install and tighten the
oil filler cap.
NOTICE
ECA10452


In order to prevent clutch slip-
page (since the transmission oil
also lubricates the clutch), do
not mix any chemical additives.
Do not use oils with a diesel
specification of “CD” or oils of a
higher quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.


Make sure that no foreign mate-
rial enters the transmission.
6. Start the engine, and then let it idle
for several minutes while checking
the transmission for oil leakage. If
oil is leaking, immediately turn the
engine off and check for the cause.
1. Transmission oil filler cap
1
1. Transmission oil drain bolt
2. Gasket
Tightening torque:
Transmission oil drain bolt:
14 Nm (1.4 m·kgf, 10 ft·lbf)
Recommended transmission oil:
See page 9-1.
Oil change quantity:
0.30 L (0.32 US qt, 0.26 Imp.qt)
12
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-9
7
EAU41711
Middle and final gear cases The middle and final gear cases must
be checked for grease leakage before
each ride. If any leakage is found, have
a Yamaha dealer check and repair the
motorcycle. In addition, have a
Yamaha dealer check and lubricate the
middle and final gears at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU40903
Cleaning the air filter element The air filter element should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
Clean or, if necessary, replace the air
filter element more frequently if you are
riding in unusually wet or dusty areas.
1. Remove the seat. (See page 4-7.)
2. Remove the air filter case cover by
removing the screw.
3. Pull the sponge material out, clean
it with solvent, and then squeeze
the remaining solvent out.4. Apply oil of the recommended type
to the entire surface of the sponge
material, and then squeeze the ex-
cess oil out.
TIPThe sponge material should be wet but
not dripping.
1. Air filter case cover
2. Screw
2 1
1. Sponge material
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-10
7 5. Insert the sponge material into the
air filter case. NOTICE: Make sure
that the sponge material is prop-
erly seated in the air filter case.
The engine should never be op-
erated without the sponge mate-
rial installed, otherwise the
piston(s) and/or cylinder(s) may
become excessively worn.
[ECA15621]
6. Install the air filter case cover by in-
stalling the screw.
7. Install the seat.
EAU41221
Cleaning the spark arrester The spark arrester should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
WARNING
EWA10980


Always let the exhaust system
cool prior to touching exhaust
components.


Do not start the engine when
cleaning the exhaust system.
1. Remove the tailpipe by removing
the screw, and then pulling it out of
the muffler.2. Tap the tailpipe lightly, and then
use a wire brush to remove any
carbon deposits from the spark ar-
rester portion of the tailpipe and in-
side of the tailpipe housing.
3. Insert the tailpipe into the muffler,
and then install and tighten the
screw.
TIPMake sure to align the screw hole when
inserting the tailpipe.
Recommended oil:
Yamaha foam air filter oil or other
quality foam air filter oil
1. Tailpipe
2. Screw
3. Muffler1
2
3
1. Spark arrester
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-15
7
EAU41052
Checking the front and rear
brake shoes The front and rear brake shoes must be
checked for wear at the intervals spec-
ified in the periodic maintenance and
lubrication chart.TIPThe wheels must be removed to check
brake shoe lining thickness.

To remove the front wheel: See
page 7-18.


To remove the rear wheel: See
page 7-20.
FrontRear
If the lining thickness of a brake shoe is
less than 1.5 mm (0.06 in), have a
Yamaha dealer replace the brake
shoes as a set.
TIPBe sure to measure the brake lining at
the thinnest portion.
EAU41842
Checking and lubricating the
cables The operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
housing of cables may result in in-
ternal rusting and cause interfer-
ence with cable movement. Replace
damaged cables as soon as possi-
ble to prevent unsafe conditions.[EWA10711]Recommended lubricant:
Yamaha Chain and Cable Lube or 4-
stroke engine oil
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SPECIFICATIONS
9-1
9
Dimensions:Overall length:
1245 mm (49.0 in)
Overall width:
575 mm (22.6 in)
Overall height:
715 mm (28.1 in)
Seat height:
485 mm (19.1 in)
Wheelbase:
855 mm (33.7 in)
Ground clearance:
105 mm (4.13 in)
Minimum turning radius:
1300 mm (51.2 in)Weight:With oil and fuel:
39 kg (86 lb)Noise and vibration level:Noise level (77/311/EEC):
PW50 75.1 dB(A)@2750 r/min
Vibration on seat (EN1032, ISO5008):
PW50 Will not exceed 0.5 m/s²
Vibration on handlebar (EN1032, ISO5008):
PW50 Will not exceed 2.5 m/s²Engine:Engine type:
Air cooled 2-stroke
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
49 cm³
Bore × stroke:
40.0 × 39.2 mm (1.57 × 1.54 in)Compression ratio:
6.00 :1
Starting system:
Kickstarter
Lubrication 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:
0.30 L (0.32 US qt, 0.26 Imp.qt)Transmission oil:Type:
YAMALUBE 4 (10W-40) or SAE 10W-40
Oil change quantity:
0.30 L (0.32 US qt, 0.26 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:
PW50 Regular unleaded gasoline only
PW50A1 Regular unleaded gasoline only
(CAN)
PW50A1 Unleaded gasoline only
(AUS)(NZL)
Fuel tank capacity:
2.0 L (0.53 US gal, 0.44 Imp.gal)Carburetor:Type × quantity:
VM12SC x 1
Spark plug(s):Manufacturer/model:
NGK/BPR4HS
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Wet, centrifugal automaticTransmission:Primary reduction system:
Spur gear
Primary reduction ratio:
63/33 (1.909)
Secondary reduction system:
Shaft drive
Secondary reduction ratio:
19/15 × 54/11 (6.218)Chassis:Frame type:
Steel tube backbone
Caster angle:
25.50 °
Trail:
50.0 mm (1.97 in)Front tire:Type:
With tube
Size:
2.50-10 4PR
Manufacturer/model:
BRIDGESTONE/KNOBBY
Manufacturer/model:
IRC/KNOBBY
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