Yamaha XVS650 Service Manual page 28

MAINTENANCE SPECIFICATIONS
ISPECI
0-1
Item Standard Limit
Timing chain:
Timing chain type / No. of links SILENT CHAIN / 118
----
Timing chain adjustment method
Automatic
----
Rocker arm / rocker arm shaft:
Bearing inside diameter 14.000 mm
N
14.018 mm
----
(0.5512
N
0.5519 in)
Shaft outside diameter 13.980 mm
N
13.991 mm
-_
.....
-
(0.5504
N
0.5508 in)
Arm-to-shaft clearance 0.009 mm .... 0.038 mm
----
(0.0004
N
0.0015 in)
Valve, valve seat, valve guide:
Valve clearance (cold) IN
0.07 .... 0.12 mm (0.0028
N
0.0047 in)
--
......
EX
0.12
N
0.17 mm (0.0047 ... 0.0067 in)
----
Valve dimensions:
~
~~ ~
~l'D'
F-A-===1
I
Head Dia Face Width Seat Width Margin Thickness
II
A" head diameter IN 36.9,." 37.1 mm (1.4528
N
1.4606 in)
----
EX
31.9,." 32.1 mm (1.2559,." 1.2638 in)
----
"B" face width
IN
2.3 mm (0.09 in)
----
EX 2.3 mm (0.09 in)
....
_--
flC" seat width
IN 1.0 ... 1.2 mm (0.039 .... 0.047 in) 1.8mm
(0.07 in)
EX 1.0 ... 1.2 mm (0.039 ,." 0.047 in) 1.8mm
(0.07 in)
IJD" margin thickness
IN
1.0", 1.4 mm (0.039 .... 0.055 in)
0.8mm
(0.03 in)
EX 1.0 ... 1.4 mm (0.039 .... 0.055 in)
0.8mm
(0.03 in)
Stem outside diameter IN 6.975 ,.., 6.990 mm (0.2746
N
0.2752 in)
6.955 mm
(0.2738 in)
EX 6.960 .... 6.975 mm (0.2740 .... 0.2746 in)
6.935 mm
(0.2730 in)
Guide inside diameter IN
7.000,." 7.012 mm (0.2756 .... 0.2761 in)
7.042 mm
(0.2772 in)
EX
7.000,." 7.012 mm (0.2756 ... 0.2761 in)
7.042 mm
(0.2772 in)
Stem-to-guide clearance
IN 0.010,." 0.037 mm (0.0004 ... 0.0015 in)
0.08 mm
(0.03 in)
EX 0.025 ,." 0.052 mm (0.001 ,." 0.002 in)
0.10 mm
(0.004 in)