Usage:
(1) Valve clearance adjusting screw.
(2) Valve clearance with engine stopped:
Intake valve ... .008 in.(0.2 mm)
(To make adjustment, turn adjusting screw 4 clicks counterclockwise from zero)
Exhaust valve ... .020 in.(0.5 mm)
(To make adjustment, turn adjusting screw 10 clicks counterclockwise from zero)
(3) 2S7339 Spring for valve:
Length under test force ... 1.894 in.(48.11 mm)
Test force ... 50.0 ± 2.5 lb.(22.7 ± 1.1 kg)
Free length after test ... 2.12 in.(53.9 mm)
Outside diameter ... 1.023 in.(25.98 mm)
(4) Diameter of valve stem:
2S8143 Intake Valve ... .3100 ± .0005 in.(7.874 ± 0.013 mm)
1S2903 Exhaust Valve ... .3100 ± .0005 in.(7.874 ± 0.013 mm)
Clearance between stem and guide:
2S8143 Intake Valve ... .0027 ± .0051 in.(0.06 ± 0.13 mm)
1S2903 Exhaust Valve ... .0027 ± .0051 in.(0.06 ± 0.13 mm)
(5) Thickness of valve lip:
Intake valve minimum permissible ... .069 in.(1.75 mm)
Exhaust valve minimum permissible ... .069 in.(1.75 mm)
(6) Angle of valve face ... 441/4°
(7) Diameter of valve head:
Intake valve ... 1.430 ± .005 in.(36.32 ± 0.13 mm)
Exhaust valve ... 1.370 ± .005 in.(34.79 ± 0.13 mm)