- Adjust valves 0.013 in cold
- No. 1 TDC: Adjust valves 1,2,3,5 (counting from front of engine)
- No. 4 TDC: Adjust valves 4,6,7,8
From the 1973 Nissan Factory Service Manual:
- COLD: 0.25 mm (13 thousands inch)
- HOT: 0.35 mm (14 thousands inch)
NOTE: The 1971 manual has the cold specification incorrect.