Service and Maintenance 6.6 Adjustments 26262 1 Adjust valve clearance if necessary: Release locknut 4. Use screwdriver 7 to turn setscrew 5 so that the correct clearance is attained after locknut 4 has been tightened. Check and adjust valve clearance on all remaining cylinders. Replace rocker cover (use new gasket if needed). Swing breather valve back into position and secure. 19691 2 Slacken off breather valve and swing to one side. Position crankshaft as per schematic 6.6.1.1 Before adjusting valve clearance, allow engine to cool down for at least 30 minutes. The oil temperature should be below 80 °C / 176 °F.
Check valve clearance between rocker arm / tappet contact face 2 and valve stem 3 with feeler gauge 6 (there should be only slight resistance when feeler blade is inserted). For permissible valve clearance, see 9.1. 6.6.1 Checking / Adjusting Valve Clearances Remove rocker cover. © 2002 6 19691 2 19691 2 26262 1 26262 1