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4.
Set valves to top dead center
Place screwdriver into spark plug hole to help determine the
position of the piston, then slowly pull the recoil rope until
the piston rises to the top position and both valves are closed
(compression step).
5.
Check intake valve clearance
The intake valve is on the right side of the cylinder head. Slide
a 0.005" ± 0.001" (0.125 ± 0.025 mm) feeler gauge in-between
the valve head and rocker arm. If the feeler gauge is too loose,
then tighten the rocker nut until the feeler fits firmly in the gap;
but not too tight that you can't remove it. If the feeler doesn't
fit in the gap, then loosen the rocker nut until feeler gauge fits
firmly inside the gap.
6.
Check exhaust valve clearance
The exhaust valve is on the left side of the cylinder head. Slide
a 0.007" ± 0.001" (0.175 ± 0.025 mm) feeler gauge in-between
the valve head and rocker arm. If the feeler gauge is too loose,
then tighten the rocker nut until the feeler fits firmly in the gap;
but not too tight that you can't remove it. If the feeler doesn't
fit in the gap, then loosen the rocker nut until feeler gauge fits
firmly inside the gap.
7.
Reinstall parts
Reinstall the valve cover, spark plug, and ignition coil wire. The
valve cover should be tightened to 7.4 ft/lbs ± 1.5 ft/lbs (10 ±
2 N·m). The spark plug should be tightened to 16.2 ft/lbs ± 1.5
ft/lbs (22±2 N·m).
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