2008 YAMAHA PW50 checking oil

TABLE OF CONTENTS
SAFETY INFORMATION
...................1-1
Safe riding ........................................1-1
Location of important labels .............1-4
DESCRIPTION
...................................2-1
Left view ...........................................2-1
Right view .........................................2-2
Controls and instruments..................2-3
INSTRUMENT AND CONTROL
FUNCTIONS
........................................3-1
Handlebar switch .............................3-1
Speed limiter and power reduction
plate .............................................3-1
Front brake lever .............................3-2
Rear brake lever ..............................3-3
Fuel tank cap ...................................3-3
Fuel ..................................................3-3
Fuel tank breather hose ...................3-5
2-stroke engine oil ...........................3-5
Fuel cock .........................................3-5
Starter (choke) lever “
1
” .................3-6
Kickstarter ........................................3-6
Seat .................................................3-7
PRE-OPERATION CHECKS
...............4-1
Pre-operation check list ...................4-2
OPERATION AND IMPORTANT
RIDING POINTS
.................................. 5-1
Starting and warming up a cold
engine .......................................... 5-1
Starting a warm engine ................... 5-1
Starting off ....................................... 5-2
Acceleration and deceleration ......... 5-2
Braking ............................................ 5-2
Engine break-in ............................... 5-3
Parking ............................................ 5-4
PERIODIC MAINTENANCE AND
MINOR REPAIR
.................................. 6-1
Owner’s tool kit ................................ 6-1
Periodic maintenance chart for the
emission control system .............. 6-2
General maintenance and lubrication
chart ............................................. 6-3
Checking the spark plug .................. 6-5
Removing the power reduction
plate ............................................. 6-6
Transmission oil .............................. 6-7
Middle and final gear cases ............ 6-8
Cleaning the air filter element ......... 6-8
Cleaning the spark arrester ............. 6-9
Adjusting the carburetor ................ 6-10
Adjusting the engine idling
speed ......................................... 6-10
Checking the throttle cable free
play ............................................ 6-11
Tires .............................................. 6-11Panel wheels ................................. 6-13
Accessories and replacement
parts ........................................... 6-13
Adjusting the front and rear brake
lever free play ............................ 6-14
Checking the front and rear brake
shoes ......................................... 6-15
Checking and lubricating the
cables ........................................ 6-15
Checking and lubricating the throttle
grip and cable ............................ 6-16
Adjusting the Autolube pump ........ 6-16
Lubricating the front and rear brake
levers ......................................... 6-16
Checking and lubricating the
centerstand ................................ 6-17
Checking the front fork .................. 6-17
Checking the steering ................... 6-18
Checking the wheel bearings ........ 6-18
Front wheel ................................... 6-19
Rear wheel .................................... 6-20
Troubleshooting ............................ 6-23
Troubleshooting chart ................... 6-24
MOTORCYCLE CARE AND
STORAGE
........................................... 7-1
Matte color caution .......................... 7-1
Care ................................................ 7-1
Storage ........................................... 7-3
SPECIFICATIONS
............................. 8-1

PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
2
3
4
5
67
8
9

EAU40891
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 oil filler cap and drain
bolt to drain the oil from the trans-
mission.4. Install the transmission oil drain
bolt, and then tighten it to the spec-
ified torque.
5. Add the specified amount of the
recommended transmission oil,
and then install and tighten the oil
filler cap.
CAUTION:

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
Tightening torque:
Transmission oil drain bolt:
14 Nm (1.4 m·kgf, 10.1 ft·lbf)
Recommended transmission oil:
See page 8-1.
Oil change quantity:
0.30 L (0.32 US qt) (0.26 Imp.qt)
1

PERIODIC MAINTENANCE AND MINOR REPAIR
6-15
2
3
4
5
67
8
9

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.
NOTE:

The wheels must be removed to check
brake shoe lining thickness.

To remove the front wheel: See
page 6-19.

To remove the rear wheel: See
page 6-20.
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.
NOTE:

Be sure to measure the brake lining at
the thinnest portion.
EAU41840
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

EWA10710
Damage to the outer housing of ca-
bles may result in internal rusting
and cause interference with cable
movement. Replace damaged ca-
bles as soon as possible to prevent
unsafe conditions.
Recommended lubricant:
Yamaha Chain and Cable Lube or
engine oil SAE 10W-30 (API SE)

PERIODIC MAINTENANCE AND MINOR REPAIR
6-17
2
3
4
5
67
8
9

EAU23191
Checking and lubricating the
centerstand
The operation of the centerstand
should be checked before each ride,
and the pivots and metal-to-metal con-
tact surfaces should be lubricated if
necessary.
WARNING

EWA11300
If the centerstand does not move up
and down smoothly, have a Yamaha
dealer check or repair it.
EAU23271
Checking the front fork
The condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main-
tenance and lubrication chart.
To check the condition
WARNING

EWA10750
Securely support the vehicle so that
there is no danger of it falling over.
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.
2. While applying the front brake,
push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
CAUTION:

ECA10590
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it.
1. Centerstand
Recommended lubricant:
Lithium-soap-based grease (all-pur-
pose grease)

INDEX
A
Acceleration and deceleration................... 5-2
Accessories and replacement parts ........ 6-13
Air filter element, cleaning......................... 6-8
Autolube pump, adjusting ....................... 6-16
B
Brake lever, front....................................... 3-2
Brake lever, rear ....................................... 3-3
Brake levers, lubricating.......................... 6-16
Brake shoes, checking ............................ 6-15
Braking ...................................................... 5-2
C
Cables, checking and lubricating ............ 6-15
Carburetor, adjusting .............................. 6-10
Care .......................................................... 7-1
Centerstand, checking and lubricating .... 6-17
E
Engine break-in ......................................... 5-3
Engine idling speed................................. 6-10
Engine oil .................................................. 3-5
Engine, starting a warm ............................ 5-1
Engine stop switch .................................... 3-1
F
Front and rear brake lever free play,
adjusting ............................................... 6-14
Front fork, checking ................................ 6-17
Fuel ........................................................... 3-3
Fuel cock................................................... 3-5
Fuel tank breather hose ............................ 3-5
Fuel tank cap ............................................ 3-3
H
Handlebar switch ...................................... 3-1
I
Identification numbers ............................... 9-1
K
Kickstarter ..................................................3-6
L
Labels, location of ......................................1-4
M
Maintenance and lubrication, periodic .......6-3
Maintenance, emission control system ......6-2
Matte color, caution ...................................7-1
Middle and final gear cases .......................6-8
Model label ................................................9-1
P
Parking.......................................................5-4
Part locations .............................................2-1
Power reduction plate, removing ...............6-6
Pre-operation check list .............................4-2
S
Safety information ......................................1-1
Seat ...........................................................3-7
Spark arrester, cleaning.............................6-9
Spark plug, checking .................................6-5
Specifications.............................................8-1
Speed limiter and power reduction plate ...3-1
Starter (choke) lever ..................................3-6
Starting and warming up a cold engine .....5-1
Starting off .................................................5-2
Steering, checking ...................................6-18
Storage ......................................................7-3
T
Throttle cable free play, checking ............6-11
Throttle grip and cable, checking and
lubricating ..............................................6-16
Tires .........................................................6-11
Tool kit .......................................................6-1
Transmission oil .........................................6-7Troubleshooting....................................... 6-23
Troubleshooting chart.............................. 6-24
V
Vehicle identification number .................... 9-1
W
Wheel bearings, checking ....................... 6-18
Wheel (front)............................................ 6-19
Wheel (rear) ............................................ 6-20
Wheels .................................................... 6-13