Suzuki AN650 2002 Service Manual page 26

2-8 PERIODIC MAINTENANCE
The tappet clearance specification is different for intake and
exhaust valves. Tappet clearance must be checked and
adjusted, 1) at the time of periodic inspection, 2) when the valve
mechanism is serviced, and 3) when the camshafts are removed
for servicing.
Tappet clearance (when cold):
Standard: IN. : 0.10 – 0.20 mm (0.004 – 0.008 in)
EX.: 0.20 – 0.30 mm (0.008 – 0.012 in)
NOTE:
* The clearance specification is for COLD state.
* To turn the crankshaft for clearance checking, be sure to use a
wrench, and rotate in the normal running direction. All spark
plugs should be removed.
• Remove the valve timing inspection cap 2.
• Turn the crankshaft to bring the "Top" line on the starter clutch
to the index mark and also to align the notches A on the both
ends of each camshaft with "1" mark B on the exhaust
sprocket to the positions as shown.