VALVE SEAT INSPECTION/REPAIR

1. Measure the seat contact width.

• If not as specified, resurface the valve seat using a 45° valve seat cutter and/or resurface the valve face.

IN: 1.1-1.4 mm {0.043-0.055 in}

EX: 1.4-1.7 mm {0.056-0.066 in}

2. Verify that the valve seating position is at the center of the valve face.

• If the seating position is too high, correct the valve seat using a 70° cutter, and then 45° cutter.

• If the seating position is too low, correct the valve seat using 30° cutter, and then 45° cutter.