Cylinder Head Measurement

Inspect the cylinder head sealing surface for flatness.

Use a straightedge (1). Refer to Engine Mechanical Specifications  to find the permitted values. If the measurement does not show the permitted values, replace the cylinder head. Machining is NOT allowed.

Prepare the gauge for valve stem to guide clearance measurement. Assemble the EN-6216  gauge and the EN-6216-200  gauge instrument as followed:

1. Install the extension (5) to the support (4).
2. Install the inside caliper (2) to the extension (5).
3. Install the gauge (3) to the support (4) and pretension to 1 mm (0.0394 in).
4. Install the calibration washer (1) as shown to justify the gauge.
5. Adjust the gauge to 0 mm (0 in) by rotating the instrument dial.
6. Cautious remove the calibration washer (1).

Measure the valve guide inner diameter (2) as shown in different areas (3). Use EN-6216  gauge (1) and gauge instruments. Note the measurement results. Refer to Engine Mechanical Specifications  to find the permitted values.

Loosely install one valve to the cylinder head (3).