firstly, its a bit more complex than gonzo might suggest, unless you are fully competent, and knowing how these engines are prone to cambelt failure i would not attempt it yourself. here is a brief description, not full.
firstly the crank is timed by pin which is screwed into the front side of the block where you first remove a small bung,
second the camshaft is timed by inserting a flat plate into a slot on the rear end of the cam after first removing the rocker cover,
third the fuel pump is timed by inserting a pin through the pulley,
to set the tension on these belts is complex and involved and would take pages to explain, beware cambelt failure will be expensive on this engine