I have a 1975 XS650B so my clearances were inlet 0.05mm / exhaust 0.10mm
But depending on your model bike it maybe different. Here are all the different specs.
(All measurements taken with cold engine)
XS1, XS2 TX650 :
Inlet valve 0.15mm / exhaust 0.30mm
TX650A, XS650B :
Inlet 0.05mm /...