4 - 19ENGCAMSHAFT, ROCKER ARMS AND VALVES2.Remove: Valve cottersNOTE:Attach a valve spring compressor 1 betweenthe valve spring retainer and the cylinder headto remove the valve cotters.CHECKING THE CAMSHAFT1.Check: Cam lobesPitting/scratches/blue discoloration →Replace.2.Measure: Cam lobes length a and b.Out of specification → Replace.Valve spring compressor:P/N. YM-04019, 90890-04019Camshaft lobe limit:Intake:a 40.52 mm (1.595 in)b 32.08 mm (1.263 in)Exhaust:a 40.52 mm (1.595 in)b 32.08 mm (1.263 in)CHECKING THE ROCKER ARMS ANDCAMSHAFT1.Check: Camshaft lobe contact surface 1 Valve adjusters 2Blue discoloration/pitting/scratches →Replace.
