Suzuki Katana 1100 Service Manual page 54

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ENGINE 3-24
If the contact area is too high on the valve, or if it is too wide,
Contact area too high
use the 15° cutter to lower and narrow the contact area.
and too wide on face of
valve
If the contact area is too low or too narrow, use the 45° cutter
to raise and widen the contact area.
• After the desired seat position and width is achieved, use
the 45° cutter very lightly to clean up any burrs caused by
the previous cutting operations. DO NOT use lapping com ­
pound after the final cut is made. The finished valve seat
should have a velvety smooth finish and not a highly polished
or shiny finish. This will provide a soft surface for the final
seating of the valve which will occur during the first few
seconds of engine operation .
• Clean and assemble the head and valve components. Fill the
intake and exhaust ports with gasoline to check for leaks. If
any leaks occur, inspect the valve seat and face for burrs or
other things that could prevent the valve from sealing.
WARNING:
Always use extreme caution when handling gasoline.
NOTE:
After servicing the valve seats, be sure to adjust the valve
clearance after the cylinder head has been reinstalled. (see
page 2-6)
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Contact area too low
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and too narrow on face I
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of valve
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