Suzuki LT-A400 Service Manual page 76

3-28 ENGINE
• Rs-finish the valve guide holes in the cylinder head with the
reamer and handle .
• :&i' t .,
09916-34580 : Valve guide reamer (10.8 mm)
09916-34542: Reamer handle
• Install a ring onto each valve guide. Be sure to use new rings.
• Oil the stem hole of each valve guide and d rive the g uide into
the guide hole with the valve guide installer.
dib
09916-44310: Valve guide remover/Installer
ICAUTION I
Failure to oil the valve guide hole before driving the
new guide into place may result in a damaged guide or
head.
• After fitting atl valve guides, re-finish their guiding bores with
the reamer. Be sure to clean and oil the guide after reaming.
n'O&.l 09916-34570 : Valve guide reamer (S.D mm)
09916-34542 : Reamer handle
NOTE:
Insert the reamer from the combustion chamber and always turn
the reamer handle clockwise.
VALVE SEAT WIDTH
• Coat the valve seat with prussian bl ue uniformly. Fit the valve
and tap the coated seat with the valve face in a rotating man-
ner, in order to obtain a clear impression of the seating con-
tact. In this operation, use the valve lapper to hold the valve
head.
• The ring-like dye impression left on the valve face must be
continuous - without any break. In addition, the width of the
dye ring, which is the visualized seat "width", must be within
the following specification :
_ Valve seat width
®
Standard :
0.9 -1 .1 mm (0.035 - 0.043
in)
• .:&it.
09916-10911: Valve lapper set
If either requirement is not met, correct th e seat by servicing it
as follows:
•
•