Yamaha PW50W 2007 Service Manual page 20

Item
Automatic centrifugal clutch:
Clutch type
Clutch housing inside diameter
Wear limit
Clutch shoe thickness
Wear limit
Clutch shoe spring free length
Llimit
Clutch-in revolution
Clutch-stall revolution
Transmission:
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Kickstarter:
Kickstarter type
Kick clip friction force P
Air filter:
Air filter oil grade
Carburetor:
Type x quantity
Manufacturer
ID mark
Main jet
Air jet
Jet needle
Needle jet
Pilot outlet
Pilot jet
Valve seat size
Starter jet 1
Float height
Fuel level (using fuel level gauge)
Idling condition:
Engine idling speed
Throttle cable free play:
Reed valve:
Thickness T
Valve stopper height
Llimit
Valve bending limit
MAINTENANCE SPECIFICATIONS
Wet, centrifugal automatic
105 mm (4.13 in)
106 mm (4.17 in)
1.0 mm (0.04 in)
0.7 mm (0.03 in)
34.5 mm (1.36 in)
35.5 mm (1.40 in)
2700 r/min
3500 r/min
Spur gear
63/33 (1.909)
Shaft drive
19/15 x 54/11 (6.218)
Ratchet
1-5 N (0.34-1.33 lbf) (0.15-0.60 kgf)
Foam air-filter oil or SAE10W30SE
VM12SC x 1
MIKUNI
5PG1 10
#70
2.5
3X24-1
E-2
0.9
#40
1.2
#30
15.5-17.5 mm (0.61-0.69 in)
2.0-4.0 mm (0.08-0.16 in)
1650-1750 r/min
1.5-3.5 mm (0.06-0.14 in)
0.200 mm (0.0079 in)
4.6-5.0 mm (0.18-0.20 in)
T
7.4-7.8 mm (0.291-0.307 in)
0.2 mm (0.01 in)
2-4
SPEC
PW50