SERVICE INFORMATION
2-3
Valves
Valve clearance
IN
0.08 ± 0.02
–
EX
0.10 ± 0.02
–
Valve stem O.D.
IN
5.475 – 5.490 (0.2156 – 0.2161)
5.400
(0.2126)
EX
5.435 – 5.450 (0.2140 – 0.2146)
5.300
(0.2087)
Valve guide I.D.
IN/EX
5.500 – 5.512 (0.2165 – 0.2170)
5.560
(0.2189)
Guide-to-stem clear-
ance
IN
0.010 – 0.037 (0.0004 – 0.0015)
0.110
(0.0043)
EX
0.050 – 0.077 (0.0020 – 0.0030)
0.130
(0.0051)
Valve seat width
1.0 – 1.2 (0.04 – 0.05)
2.1 (0.08)
Valve spring free length
38.3 (1.51)
36.8 (1.45)
Valve spring perpendicularity
2° max.
–
Camshaft
Cam height
IN
29.506 – 29.706 (1.1617 – 1.1695)
29.36
(1.156)
EX
29.410 – 29.610 (1.1579 – 1.1657)
29.26
(1.152)
Camshaft O.D.
16.982 – 17.000 (0.6686 – 0.6693)
17.100
(0.6732)
Valve lifter
Valve lifter I.D.
6.010 – 6.040 (0.2366 – 0.2378)
6.070
(0.2390)
Valve lifter shaft O.D.
5.970 – 6.000 (0.2350 – 0.2362)
5.940
(0.2339)
Rocker arm
Rocker arm I.D.
6.000 – 6.018 (0.050 – 0.077)
6.043
(0.2379)
Rocker arm shaft O.D.
5.960 – 5.990 (0.2346 – 0.2358)
5.953
(0.2344)
Rocker arm shaft bearing I.D.
6.000 – 6.018 (0.050 – 0.077)
6.043
(0.2379)
Oil pump
Oil pressure
2.8 kgf/cm
2
(39.8 psi) /
2,000 min
-1
(rpm) and more
–
Tip clearance
0.15 (0.006)
0.30 (0.012)
Outer rotor-to-housing clearance
0.150 – 0.210 (0.0059 – 0.0083)
0.30 (0.012)
Outer rotor-to-pump cover clearance
0.04 – 0.09 (0.002 – 0.004)
0.11 (0.004)
Carburetor
Main jet
GX630/630R: #102 (No.1 cylinder)
#105 (No.2 cylinder)
GX660/660R: #112
(No.1 / No.2 cylinder)
GX690/690R: #118
(No.1 / No.2 cylinder)
–
Pilot screw opening
GX630/630R: 2 turns out
(No.1 cylinder)
1 - 7/8 turns out
(No.2 cylinder)
GX660/660R: 1 - 3/4 turns out
(No.1 cylinder)
1 - 7/8 turns out
(No.2 cylinder)
GX690/690R: 1 - 7/8 turns out
(No.1 cylinder)
1 - 3/4 turns out
(No.2 cylinder)
–
Float height
15.5 (0.61)
–
Spark plug
Gap
0.7 – 0.8 (0.028 – 0.031)
–
Ignition Coil
Air gap
0.2 – 0.6 (0.01 – 0.02)
–
Starter motor
Brush length
10 (0.4)
6 (0.2)
Mica depth
–
0.2 (0.01)
Charge coil
Resistance
2.7A
1.95 - 2.93
Ω
–
17A
0.18 - 0.28
Ω
–
26A
0.17 - 0.25
Ω
–
Part
Item
Standard
Service limit
62Z6N000.book 3 ページ 2009年6月16日 火曜日 午後6時17分