Service Manual (KLZ1000C) — page 202 of 762

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5-34 ENGINE TOP END
Valves
 If the outside diameter [A] of the seating surface is too
 large, make the 32° [B] grind described below.
 If the outside diameter of the seating surface is within the
 specified range, measure the seat width as described be-
 low.
•Grind the seat at a 32° angle until the seat outside diam-
 eter is within the specified range.
○To make the 32° grind, fit a 32° cutter into the holder, and
 slide it into the valve guide.
○Turn the holder one turn at a time while pressing down
 very lightly. Check the seat after each turn.
                           NOTICE
    The 32° cutter removes material very quickly.
    Check the seat outside diameter frequently to pre-
    vent overgrinding.
○After making the 32° grind, return to the seat outside di-
    ameter measurement step above.
•   To measure the seat width, use a vernier caliper to mea-
    sure the width of the 45° angle portion of the seat at sev-
    eral places around the seat.
    If the seat width is too narrow, repeat the 45° grind until
    the seat is slightly too wide, and then return to the seat
    outside diameter measurement step above.
 If the seat width is too wide, make the 60° [A] grind de-
 scribed below.
 If the seat width is within the specified range, lap the valve
 to the seat as described below.
•Grind the seat at a 60° angle until the seat width is within
 the specified range.
○To make the 60° grind, fit 60° cutter into the holder, and
 slide it into the valve guide.
○Turn the holder, while pressing down lightly.
○After making the 60° grind, return to the seat width mea-
 surement step above.
   Correct Width [B]