Suzuki GSF650S Service Manual page 68

3-32 ENGINE
• Re-finish the valve guide holes in the cylinder head using the
reamer and handle.
) 09916-34580: Valve guide reamer
09916-34542: Valve guide reamer handle
• Install a ring onto each valve guide. Be sure to use new rings.
• Oil the stem hole of each valve guide and drive the guide into
the guide hole using the valve guide installer.
2 Valve guide
3 Cylinder head
) 09916-44310: Valve guide remover/installer
$
Failure to oil the valve guide hole before driving the
new guide into place may result in a damaged guide or
head.
• After installing the valve guides, re-finish their guiding bores
using the reamer. Be sure to clean and oil the guides after
reaming.
) 09916-34570: Valve guide reamer
09916-34542: Valve guide reamer handle
NOTE:
Insert the reamer from the combustion chamber and always turn
the reamer handle clockwise.
VALVE SEAT WIDTH
• Coat the valve seat uniformly with Prussian blue. Install the
valve and attach a valve lapper onto it. Tap the coated seat
with the valve face in a rotating manner, in order to obtain a
clear impression of the seating contact.
) 09916-10911: Valve lapper set