Suzuki GSX1400 Service Manual page 70

3-30 ENGINE
VALVE SEAT WIDTH INSPECTION
• Visually check for valve seat width on each valve face.
• If the valve face has worn abnormally, replace the valve.
• Coat the valve seat with Prussian Blue and set the valve in
place. Rotate the valve with light pressure.
• Check that the transferred blue on the valve face is uniform all
around and in center of the valve face.
09916-10911: Valve rapper set
• If the seat width W measured exceeds the standard value, or
seat width is not uniform reface the seat using the seat cutter.
Valve seat width W:
Standard: 0.9 – 1.1 mm (0.035 – 0.043 in)
If the valve seat is out of specification, recut the seat.
VALVE SEAT SERVICING
• The valve seats for both the intake and exhaust valves are ma-
chined to four different angles. The seat contact surface is cut
at 45°.
15°
30°
45°
60°
09916-21111: Valve seat cutter set
09916-20630: Valve seat cutter (N-126)
09916-20640: Solid pilot (N-100-4.5)
NOTE:
The valve seat cutters (N-121), (N-122) and (N-111) are included
in the valve seat cutter set (09916-21111).
The valve seat contact area must be inspected after each
cut.
• When installing the solid pilot 1, rotate it slightly.
www.GSX1400FE.com
INTAKE EXHAUST
N-121
N-126
N-122 N-122
N-111
EXHAUST
INTAKE