17mm or 0.016" both intake and exhaust. Valves closed.
.16 inches both intake and exhaust valves
.004 inches for both intake and exhaust valves.
From the front of the head it's EIIEEIIE. This is the same on both sides - (I=Intake, E=Exhaust) With the valve covers off the rocker that aligns with the exhaust port is the exhaust the other will align with the intake manifold runner this would be your intake
Both the intake and the exhaust valve are closed.
Valve overlap.
0.016" cold both intake and exhaust. valves closed
During the power or combustion stage of a piston cycle, both valves are necessarily closed, because the expansion of gases is driving the piston down.
the valve clearance should be set at .002 for the intake and the exhaust
Intake valves run cooler than exhaust valves and they are made of different material, so their thermal expansion is less than the exhaust valves. Therefore, they can have a smaller valve lash clearance, since they won't 'grow' as much due to thermal expansion, and won't present the problem of slamming into the top of the piston as readily as exhaust valves with too-small valve lash clearances will. But, not all engines have dissimilar valve lash clearances on intake and exhaust. Many small single-cylinder engines have exactly the same clearance on both intake and exhaust valves.
.16 inches both intake and exhaust valves
Valves should be adjusted cold (70ºF ) at .016" for both intake and exhaust valves. As usual, make sure cylinder is at TDC when adjusting.