Suzuki GSR600 Service Manual page 25

2-8 PERIODIC MAINTENANCE
• Remove the valve timing inspection plug 1.
• Turn the crankshaft to bring the "Top" line on the starter clutch
to the index mark and also to bring the notches A on the left
ends of both camshafts (Ex. and In.) to the positions as
shown.
• In this condition, read the valve clearance at the valves B (In.
and Ex. of No.4 cylinder, Ex. of No.3 and In. of No.2).
• If the clearance is out of specification, adjust the clearance.
(2-9)
 09900-20803: Thickness gauge