Suzuki LT-A700X 2004 Service Manual page 86

VALVE SEAT WIDTH INSPECTION
Coat the valve seat uniformly with Prussian blue. Fit the valve
and tap the coated seat with the valve face in a rotating manner,
in order to obtain a clear impression of the seating contact. In
this operation, use the valve lapper to hold the valve head.
The ring-like dye impression left on the valve face must be con-
tinuous 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 W:
Standard: 0.9 – 1.1 mm (0.035 – 0.043 in)
% 09916-10911: Valve lapper set
If either requirement is not met, correct the seat by servicing is
as follows:
VALVE SEAT SERVICING
The valve seats 1 for both intake valve 2 and exhaust valve 3
are machined to four different angles. The seat contact surface
is cut 45°.
INTAKE
15°
30° N128
45° N128
60° N114
NOTE:
The valve seat contact area must be inspected after each cut.
% 09916-21111: Valve seat cutter set
09916-24210: Valve seat cutter (N-615)
09916-24450: Solid pilot (N-100-5.52)
09916-24480: Solid pilot (N-140-5.5)
09916-22420: Valve seat cutter (N-114)
09916-22430: Valve seat cutter (N-128)
EXHAUST
N615
N128
N114
60˚
60˚
30˚
45˚
ENGINE 3-35
15˚
45˚