CYLINDER HEAD
Page 4A-30 90-857046R1 NOVEMBER 2001
Cylinder Head
1. Inspect the cylinder head for the following conditions:
• Mineral deposits/corrosion in water passage ways.
• Carbon deposits in combustion chamber (use round scraper to clean away depos-
its). Be careful not to scratch or remove material.
2. Using a straight edge and a thickness gauge inspect cylinder head for warpage. Re-
place cylinder head if out of specification. Measure in locations illustrated.
56899
Cylinder Head Warpage Limit
0.004 in. (0.1 mm)
Valve Guide inspection
1. Measure the valve guide bore (a). If valve guide wear is out of specification, replace the
valve guide.
a
58257
Valve Guide Inside Diameter
Intake Valve
0.2165 - 0.2170 in.
Exhaust Valve
(5.500 - 5.512 mm)
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