SPEC
Specification
2-17
67C3K11
Fuel system
Crankshaft
Crankshaft journal diameter
mm (in)
42.984–43.000 (1.6923–1.6929)
Crankpin diameter
mm (in)
32.984–33.000 (1.2986–1.2992)
Crankpin width
mm (in)
21.000–21.070 (0.8268–0.8295)
Crankshaft runout limit
mm (in)
0.05 (0.0020)
Crankcase
Crankshaft journal oil
clearance
(*1)
mm (in)
0.012–0.044 (0.0005–0.0017)
Upper and lower crankcase
main journal bearing thickness
A - (Blue)
mm (in)
1.498–1.502 (0.0590–0.0591)
B - (Black)
mm (in)
1.494–1.498 (0.0588–0.0590)
C - (Brown)
mm (in)
1.490–1.494 (0.0587–0.0588)
Oil pump
Type
Trochoid
Relief valve opening pressure
kPa
(kgf/cm
2
, psi)
389–451 (3.89–4.51, 56.4–65.4)
Thermostat
Opening temperature
at 0.05 mm (0.0020 in)
°C (°F)
58–62 (136–144)
Fully open temperature
°C (°F)
70 (158)
Valve open lower limit
mm (in)
3.0 (0.12)
Manual starter
Starter rope length
mm (in)
—
1,750
(68.9)
—
Starter rope extended length
mm (in)
—
1,400–
1,600
(55.12–
62.99)
—
(*1)
The figures are for reference only.
Item
Unit
Model
F30AEHT
F30AET
F40BWHT
F40BET
Carburetor
ID mark
(For Europe)
—
69H22
—
67C23
(For Oceania)
69H02
67C03
Float height
mm (in)
12.0–16.0 (0.47–0.63)
Valve seat size
mm (in)
1.4 (0.06)
Main jet (M.J.)
#88
#95
Main nozzle (M.N.)
mm (in)
2.4 (0.09)
2.8 (0.11)
Item
Unit
Model
F30AEHT
F30AET
F40BWHT
F40BET
Summary of Contents for F30A
Page 1: ...F30A F40B SERVICE MANUAL 67C 28197 3K 11 ...
Page 4: ......
Page 26: ...GEN INFO General information 1 21 67C3K11 MEMO ...
Page 150: ...POWR Power unit 5 55 67C3K11 MEMO ...
Page 236: ...BRKT Bracket unit 7 55 67C3K11 MEMO ...
Page 282: ......
Page 283: ...YAMAHA MOTOR CO LTD Printed in China Aug 2007 1 2 1 CR E ...