a timing light (Simply a wire with a 12v bulb in the middle and crocodile clips either end).
Unclip the distributor cap from the main body of the distributor with the flat blade screwdriver and locate the notch on the rim which should be your number 1 cylinder mark.
Using the the appropriate spanner rotate the generator pulley clockwise until the crank pulley notch/mark is lined up with the crack between the two halves of the crankcase and the rotor arm is pointing towards the notch on the distributor body.
Place the distributor cap back on the distributor body ensuring its clipped down properly and place your static timing light to same connector as the thin green wire on the coil, (or negative side of coil) the other end should connect to a good earth.
Loosen the 10mm nut on the distributor just enough so the distributor will turn, now turn on the ignition (Don't start the engine!).
Rotate the distributor until the timing light turns on, now turn it clockwise until it turns off and then slowly counter clockwise until is just turns on, keep doing this till you get it just right i.e the light just comes on, then tighten up the 10mm nut on the distributor and check the light comes on at the right place just to ensure you haven't moved it while tightening the 10mm nut.
Turn off the ignition, you have now completed statically timing your engine.
You should now finely adjust your timing with a timing gun if you haven't got one then you can measure 11mm from TDC that will give you 7.5 degrees and 46.5 mm gives you 30 degrees. Mark them with tipex and you have your rough timing marks.