there is no any timing mark in the sprocket of an injection pump..make sure the camshaft position in power stroke cylinder number 1,and let the crankshaft at TDC position,then remove the injection pump completely (note the inj pump is rotary type) tyrn the shaft clockwise until release pressure the end fit of tubing for cylinder number 1,fix the inj pump carefully and fix the sprocket and tight the torx bolt counter clockwise.
elcid padilla of liliw laguna,phils., August 2011