Honda GX690 Workshop Manual page 21

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