Yamaha 50G Service Manual page 27

SPEC
Item
Crankshaft:
Crank width "A"
Crank width "B"
Crank width "C"
Maximum deflection
"D"
Connecting rod side
clearance "E"
Connecting rod maxi-
mum axial play "F"
Carburetor:
Stamp mark
Main jet (M.J.)
Main air jet (M.A.J.)
Pilot jet
Pilot air jet (P.A.J.)
Pilot screw (P.S.)
Float height (F.H.)
Valve seat size
Idling speed
Oil injection pump:
Stamped mark
Discharge
Reed valve:
Stopper height
Warpage limit
*1
: For C60ER, C60TR
*2
: For C75TR
*3
: Lower cylinder
MAINTENANCE SPECIFICATIONS
Unit
mm (in) 57.90 ~ 57.95 (2.280 ~ 2.281)
mm (in) 151.7 ~ 152.0 (5.972 ~ 5.984)
mm (in)
mm (in)
mm (in)
mm (in)
#
#
(P.J.) #
#
Turns out 1-3/8 ± 1/4
15.0 ± 1.0
mm (in)
ø 1.2 (0.047) 1.6 (0.063),
r/min
3
cm
(0.064 ± 0.017,
(US oz,
0.067 ± 0.018)
lmp oz)
mm (in)
mm (in)
50 hp 60 hp
245.5 ~ 246.1 (9.67 ~ 9.69) 284.2 ~ 284.8 (11.19 ~ 11.21)
0.03 (0.0012)
0.20 ~ 0.70 (0.008 ~ 0.028)
62F00 6H20A, 6H30A
*1
6H210
125 140,
*3
145 (L)
*1
170 175, 180
*1
65 65, 70
*1
70 75, 80
1-1/4 ± 1/4
1-1/2 ± 1/4,
1-3/8 ± 1/4 *1
(0.59 ±
0.04)
1.4 (0.055)
*1
1.4 (0.055)
62F00 6H302
2.20 ± 0.50
1.90 ± 0.50
(0.074 ± 0.017,
0.077 ± 0.018)
3.0 ± 0.2
(0.12 ± 0.01)
2-6
Model
70 hp 75 hp 80 hp
0.05 (0.0020)
0.12 ~ 0.26 (0.005 ~ 0.010)
2.0 (0.08)
6H007, 6H007
*2
6H015
150
160 180
*2
75 78, 80
*2
70 80, 75
1-3/8 ± 1/4
14.0 ± 1.0 (0.55 ± 0.04)
14.0 ± 2.0 (0.55 ± 0.08)
19.5 ± 3.0 (0.77 ± 0.12)
1.6 (0.063)
800 ± 50
6H102
3.10 ± 0.70
(0.105 ± 0.024,
0.109 ± 0.025)
9.9 ± 0.2 (0.39 ± 0.01)
0.2 (0.01)
E
90 hp
—
—
6H107
160
175
78 78
80 70
1-1/4 ± 1/4
*1
*2