Suzuki LT-Z400 2003 - Page 69

INITIAL SEAT CUT
• Deseale and clean up the seat using the 45 ° cutter. Rotate the
cutter one or two turns.
• Measure the va lve seat width ® after every cut.
• If the valve seat is pitted or burned, use the 45° cutter to con-
dition the seat some more.
NOTE:
Cut only the minimum amount necessary from the seat to pre-
vent the possibility of the tappet shim replacement.
TOP NARROWING CUT
• If the contact area is too high on the va lve, or if it is 100 wide,
use the 3~ '' cutter ( for the intake side) and the 15° cutter (for
the exhaust side) to lower and narrow the contact area.
Contact area too high and
too wide on face of
valve
ENGINE 3, 25
",[ \",
30'