Yamaha QT50 Service Manual page 99

Crankshaft:
Crankshaft Assembly W idth (FJ
Crankshaft Deflection (A)
Connecting Rod Big End Side Clearance (C)
Connecting Rod Small End Deflection IS)
Crank Bearing Type
Crank Bearing Type
Crank Oil Seal Type
Crank Oil Seal Type
Clutch:
Clutch Type
s
(Left)
(Right)
(Left)
(Right)
Primary Reduction Ratio & Method
Clutch Shoe - Thickness
Clutch Shoe Spring - Free Length
Clutch Shoe Spring - Set Weight
Clutch-in Revolution
Clutch-stall Revolution
Transmission:
Secondary Reduction Ratio & Method
Transmission Gear Oil Quantity & Type
Reduction Ratio & Method
Kick Starter:
Type
Intake:
Air cleaner type
Reed Valve
Bending Limit
Valve Lift
Tightening Torque
Carburetor:
Type & Manufacturer
1.0. Mark
Main Jet
Air Jet
Jet Needle-clip Position
Needle Jet
Cutaway
Pilot Jet
Air Screw (turns out)
Starter Jet
Fuel Level
Engine Idling Speed
(M .J.)
(A.J.)
(J .N.)
(N.J.)
(C.A.J
(P.J.)
(A.S.)
(G.S.J
(F.L.)
7-2
38
_g.OS
mm (1.50
_g. 0 02
in)
0 .03 mm (0.0012 in)
0 .35,..., 0 .55 mm (0.014 ,...., 0 .021 in)
0 .4 ,...., 0 .8 mm (0.016,...., 0 .031 in)
6203-C3
6203- C3
5017- 35- 7
5023- 35- 7
Wet. Centrifugal automatic
63/33 ( 1.909). gear
1.0 mm (0.040 in)
34.5 mm (1.36 in)
3 .6 kg (7.94 lb)
2.700 r/min
3.500 r/min
19/15 (1.266). bevel wheel gear
Exchange:
300 cm 3 (0-26
IMP.qt)
Total:
350cm 3 (0.31 IMP.qt)
Yamalube 4-cycle oil or SAE 1 OW/30 motor oil
57/10 (5.700). bevel wheel gear
Ratchet type
Oiled foam rubber
0 .8 mm (0.031 in)
4 .8
±
0 .2 mm (0.19
±
0.008 in)
0 .8 Nm (0.08 m-kg. 0 .6 ft-lb)
VM12SC. MIKUNI
3L500 (3L501)
#75 (#70)
2.5
303-3 (3T3-2)
E-0
1.0(4.0)
#45 (#40)
1-3/ 4 (1-1/2)
#35
22.0 mm
±
1.0 mm (0.87
±
0 .04 in)
1,700 r/min