Yamaha YW50AP Service Manual page 26

Crankshaft:
Crank Width "A"
Run Out Limit "C"
Connecting Rod Big End Side
Clearance "D"
Small End Free Play "F"
Automatic centrifugal clutch:
Clutch shoe thickness
Clutch housing inside diameter
Clutch shoe spring free length
Clutch - in revolution
Clutch - stall revolution
V-belt:
V-belt width
Kick Starter:
Type
Kick Clip Tension
Carburetor:
I.D. Mark
Main Jet
Needle jet
Jet Needle-clip Position
Main Air Jet
Cutaway
Pilot Jet
Bypass
Valve Seat Size
Starter Jet
Float Height
Fuel level height
Engine Idling Speed
Reed Valve:
Thickness
Valve Stopper Height
Valve bending limit
MAINTENANCE SPECIFICATION
Item
(M.J.)
(NJ)
(J.N.)
( M.A.J.)
(C.A.)
(P.J.)
(V.S.)
(G.S.)
Standard
37.90~37.95 mm(1.49~1.49 in)
0.03 mm(0.0012 in)
0.2~0.5 mm
(0.0029~0.020 in)
0.4~0.8 mm
(0.016~0.031 in)
4.0 mm(0.16 in)
105 mm
(4.13 in)
94 mm(3.7 in)
3,300~3,700 r/min
5,500~6,500 r/min
16.6 mm(0.65 in)
Ratchet type
1.5~2.5 N (0.15~0.25 kgf)
(0.34~0.56 lb)
5DA-01
#80
2.085
3N24-3/5
2.0
3.5
#44
0.8
1.8
#48
15 ~17 mm(0.59 ~ 0.67 in)
3.0~4.0 mm(0.12 ~0.16 in)
1,750~1,850 r/min
0.150~0.154 mm(0.059~0.0060 in)
6.0~6.4 mm(0.24~0.25 in)
0.2 mm (0.0078)
2-5
SPEC
Limit
...
...
1.0 mm(0.04 in)
...
2.5 mm(0.1 in)
105.5 mm
(4.15 in)
91 mm(3.58 in)
...
...
14.6 mm(0.57 in)