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Valve & Seat Refacing Measurements

CAUTION: After grinding valves or valve seats, check valve clearance.
  1. Check the valve head and seat.
    1. Check valve angles.
    2. Check margin width.
    3. Be sure margin width is within specification. Refer to SPECIFICATIONS .
    Fig 1: Checking Valve Head & Seat
    G01151233Courtesy of MAZDA MOTORS CORP.
  2. Inspect for abnormalities on the valve face and seat.
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