Releasing chain tensioner
โข Unscrew left-hand end cover
โข Release M6 screw at chain tensioner in order to reduce the oil pressure in the chain tensioner
โข Turn the engine a little in counterclockwise direction in order to tension the chain
โข Alternatively, tension the chain with the aid of the camshaft
โข Fix chain tensioner in position with lock pin (M41, No. 1 13340)