Checking The Valve Seats

The following procedure applies to all of the valves and valve seats.

1. Eliminate:

• carbon deposits

(from the valve face and valve seat)

Pitting/wear ^ Replace the cylinder head.

3. Measure: • valve seat width @ Out of specification head.

Replace the cylinder

Valve seat width 0.9 - 1.1 mm (0.0354 - 0.0433 in) <Limit>: 1.6 mm (0.06 in)

a. Apply Mechanic's blueing dye (Dykem) © onto the valve face.

b. Install the valve into the cylinder head.

c. Press the valve through the valve guide and onto the valve seat to make a clear impression.

d. Measure the valve seat width.

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