Valve clearance adjusting method

Abstract

Provided is a valve clearance adjusting method by which an accurate valve clearance adjustment can be easily performed regardless of the tolerance of pitch dimensions of an adjusting screw. The valve clearance adjusting method including: measuring a cam profile of the camshaft 50 mounted on the cylinder head 100; identifying, on the basis of a measurement result of the cam profile, a predetermined rotation angle θV of the camshaft 50 at which a predetermined lift amount corresponding to a predetermined valve clearance is obtained; rotating the camshaft 50 and allowing a pressed portion 61, 71 of the rocker arm 60, 70 to face a cam surface at the predetermined rotation angle θV; rotating an adjusting screw 90 with the pressed portion faced with the cam surface and setting a valve clearance to zero; and fastening the adjusting screw 90 with a lock nut 91.

Dependencies are inferred from the claim text.