what are the numbers both engine and frame? That will help us decipher what you are asking. Or look here;
http://www.xs650.org.au/general%20info.HTM
It's down the page aways.
[FONT=Verdana, Arial, Helvetica]Model[/FONT] [FONT=Verdana, Arial, Helvetica]Serial Number[/FONT] [FONT=Verdana, Arial, Helvetica]Year[/FONT] [FONT=Verdana, Arial, Helvetica]Colour(s)[/FONT]
[FONT=Verdana, Arial, Helvetica]
XS1[/FONT] [FONT=Verdana, Arial, Helvetica]
S650-000101[/FONT] [FONT=Verdana, Arial, Helvetica]
1970[/FONT] [FONT=Verdana, Arial, Helvetica]
Candy Green[/FONT] [FONT=Verdana, Arial, Helvetica]
XS1B[/FONT] [FONT=Verdana, Arial, Helvetica]
S650-007101[/FONT] [FONT=Verdana, Arial, Helvetica]
1971[/FONT] [FONT=Verdana, Arial, Helvetica]
Candy Orange[/FONT] [FONT=Verdana, Arial, Helvetica]
XS2[/FONT] [FONT=Verdana, Arial, Helvetica]
S650-100101[/FONT] [FONT=Verdana, Arial, Helvetica]
1972[/FONT] [FONT=Verdana, Arial, Helvetica]
Brilliant Red[/FONT] [FONT=Verdana, Arial, Helvetica]
TX650[/FONT] [FONT=Verdana, Arial, Helvetica]
S650-200101[/FONT] [FONT=Verdana, Arial, Helvetica]
1973[/FONT] [FONT=Verdana, Arial, Helvetica]
Metallic Flake Blue, Pearl Yellow Gold[/FONT] [FONT=Verdana, Arial, Helvetica]
TX650A[/FONT] [FONT=Verdana, Arial, Helvetica]
447-000101[/FONT] [FONT=Verdana, Arial, Helvetica]
1974[/FONT] [FONT=Verdana, Arial, Helvetica]
Cinnamon Brown, Vegas Green[/FONT]
[FONT=Verdana, Arial, Helvetica]
XS650B[/FONT] [FONT=Verdana, Arial, Helvetica]
447-100101[/FONT] [FONT=Verdana, Arial, Helvetica]
1975[/FONT] [FONT=Verdana, Arial, Helvetica]
Star Black, Baja Brown[/FONT] [FONT=Verdana, Arial, Helvetica]
XS650C[/FONT] [FONT=Verdana, Arial, Helvetica]
447-200101[/FONT] [FONT=Verdana, Arial, Helvetica]
1976[/FONT] [FONT=Verdana, Arial, Helvetica]
French Blue/Red[/FONT]
[FONT=Verdana, Arial, Helvetica]
XS650D[/FONT] [FONT=Verdana, Arial, Helvetica]
447-700101[/FONT] [FONT=Verdana, Arial, Helvetica]
1977[/FONT] [FONT=Verdana, Arial, Helvetica]
Maxi Maroon, Bountiful Blue[/FONT]
[FONT=Verdana, Arial, Helvetica]
XS650E[/FONT] [FONT=Verdana, Arial, Helvetica]
2F0-000101[/FONT] [FONT=Verdana, Arial, Helvetica]
1978[/FONT] [FONT=Verdana, Arial, Helvetica]
Star Black, Spruce Metallic Green[/FONT]
[FONT=Verdana, Arial, Helvetica]
XS650SE[/FONT] [FONT=Verdana, Arial, Helvetica]
2F0-100101[/FONT] [FONT=Verdana, Arial, Helvetica]
1978[/FONT] [FONT=Verdana, Arial, Helvetica]
Vintage Burgandy, New Midnight Black[/FONT]
[FONT=Verdana, Arial, Helvetica]
XS650F[/FONT] [FONT=Verdana, Arial, Helvetica]
2F0-150101[/FONT] [FONT=Verdana, Arial, Helvetica]
1979[/FONT] [FONT=Verdana, Arial, Helvetica]
Cobalt Blue[/FONT] [FONT=Verdana, Arial, Helvetica]
XS650SF[/FONT] [FONT=Verdana, Arial, Helvetica]
447-910101 (Aus) 2F0-250101[/FONT][FONT=Verdana, Arial, Helvetica]
1979[/FONT] [FONT=Verdana, Arial, Helvetica]
Carmine Red, Black Gold[/FONT]
[FONT=Verdana, Arial, Helvetica]
XS6502F[/FONT] [FONT=Verdana, Arial, Helvetica]
4F0-250101[/FONT] [FONT=Verdana, Arial, Helvetica]
1979[/FONT] [FONT=Verdana, Arial, Helvetica]
New Yamaha Black[/FONT] [FONT=Verdana, Arial, Helvetica]
XS650G[/FONT] [FONT=Verdana, Arial, Helvetica]
3G0-000101[/FONT] [FONT=Verdana, Arial, Helvetica]
1980[/FONT] [FONT=Verdana, Arial, Helvetica]
Black Gold[/FONT]
[FONT=Verdana, Arial, Helvetica]
XS650SG[/FONT] [FONT=Verdana, Arial, Helvetica]
3W6 (Aus.) 2F0-200101[/FONT][FONT=Verdana, Arial, Helvetica]
1980[/FONT] [FONT=Verdana, Arial, Helvetica]
Cardinal Red, New Yamaha Black[/FONT]
[FONT=Verdana, Arial, Helvetica]
XS650H[/FONT] [FONT=Verdana, Arial, Helvetica]
4N9-000101[/FONT] [FONT=Verdana, Arial, Helvetica]
1981[/FONT] [FONT=Verdana, Arial, Helvetica]
Indigo Blue, New Ruby Red[/FONT]
[FONT=Verdana, Arial, Helvetica]
XS650SH[/FONT] [FONT=Verdana, Arial, Helvetica]
5A9 (Aus.) 4M4-000101[/FONT][FONT=Verdana, Arial, Helvetica]
1981[/FONT] [FONT=Verdana, Arial, Helvetica]
New Yamaha Black, Frost Silver[/FONT] [FONT=Verdana, Arial, Helvetica]
XS650J[/FONT] [FONT=Verdana, Arial, Helvetica]
5V4-000101[/FONT] [FONT=Verdana, Arial, Helvetica]
1982[/FONT] [FONT=Verdana, Arial, Helvetica]
New Yamaha Black[/FONT] [FONT=Verdana, Arial, Helvetica]
XS650SJ[/FONT] [FONT=Verdana, Arial, Helvetica]
5V4-100101[/FONT] [FONT=Verdana, Arial, Helvetica]
1982[/FONT] [FONT=Verdana, Arial, Helvetica]
New Yamaha Black, New Ruby Red[/FONT]