engine YAMAHA PW50 2008 Owner's Guide

MOTORCYCLE CARE AND STORAGE
7-4
1
2
3
4
5
6
7
8
9
install the spark plug and the
spark plug cap.
WARNING

EWA10950
To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turning
the engine over.
6. Lubricate all control cables and the
pivoting points of all levers and
pedals as well as of the center-
stand.
7. Check and, if necessary, correct
the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
8. Cover the muffler outlet with a
plastic bag to prevent moisture
from entering it.
NOTE:

Make any necessary repairs before
storing the motorcycle.

8-1
2
3
4
5
6
7
89

SPECIFICATIONS
EAU2633K
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:
39.0 kg (86 lb)
Engine:
Engine type:
Air cooled 2-stroke
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
49.0 cm
3

Bore
×
stroke:
40.0
×
39.2 mm (1.57
×
1.54 in)
Compression ratio:
6.00 :1
Starting system:
KickstarterLubrication system:
Separate lubrication (Yamaha autolube)

Engine oil:
Type:
YAMALUBE 2 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 (10W30) or SAE 10W30
Oil change quantity:
0.30 L (0.32 US qt) (0.26 Imp.qt)
Air filter:
Air filter element:
Wet element
Fuel:
Recommended fuel:
Regular unleaded gasoline only
(AUT)(BEL)(CAN)(CHE)(DEU)(DNK)
(ESP)(FIN)(FRA)(GBR)(GRC)(IRL)(NLD)
(NOR)(PRT)(SWE)(ZAF)
Unleaded gasoline only (AUS)(NZL)
Fuel tank capacity:
2.0 L (0.53 US gal) (0.44 Imp.gal)
Carburetor:
Manufacturer:
MIKUNI
Type
×
quantity:
VM12SC x 1
Spark plug (s):
Manufacturer/model:
NGK/BP4HS (AUS)(NZL)
NGK/BPR4HS
(AUT)(BEL)(CAN)(CHE)(DEU)(DNK)
(ESP)(FIN)(FRA)(GBR)(GRC)(IRL)(NLD)
(NOR)(PRT)(SWE)(ZAF)
Manufacturer/model:
DENSO/W14FPL (AUS)(NZL)
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Clutch:
Clutch type:
Wet, centrifugal automatic
Transmission:
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

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