Valve Clearance: Adjustments

HIGH OUTPUT

1. With No. 1 piston at TDC at end of compression stroke, check following valves:
a. Intake Nos. 1, 4 and 8; exhaust Nos. 1, 3 and 7.
2. Rotate crankshaft 360°. Check following valves:
a. Intake Nos. 3 and 7; exhaust Nos. 2 and 6.
3. Rotate crankshaft 90°. Check following valves:
a. Intake Nos. 2, 5 and 6; exhaust Nos. 4, 5 and 8.
4. If clearance is less than specified, install a shorter push rod.
5. If clearance is greater than specified, install a longer push rod.

NON HIGH OUTPUT

1. With No. 1 piston at TDC at end of compression stroke, check clearance of following valves:
a. Intake Nos. 1, 7 and 8; exhaust Nos. 1, 4 and 5.
2. Rotate crankshaft 360°. Check clearance of following valves:
a. Intake Nos. 4 and 5; exhaust Nos. 2 and 6.
3. Rotate crankshaft 90°. Check clearance of following valves:
a. Intake Nos. 2, 3 and 6; exhaust Nos. 3, 7 and 8.
4. If clearance is less than specified, install a shorter push rod.
5. If clearance is greater than specified, install a longer push rod.