I need the timing marks for belt replacement on the 1.6L SOHC 1990 Geo Prizm

1.6 engine, timing belt. 4A not 4AF. F = twin cam.
V.I.N. code 6 not 5, the 5is twin cam 4AFE twin.
the car is a Corolla, and as such info is easy to find on toys,
so that the engine real name is.
http://en.wikipedia.org/wiki/Toyota_A_engine#4A

so you dont want all the facts? marks and how to set tension correctly? really? at #12 and 18?
getting all this right, makes it GO 60k more miles, (a fact)

the words.

1. Remove the timing belt covers using procedures described earlier in this section.
2. If not done as part of the cover removal, rotate the crankshaft clockwise to the TDC/compression position for No. 1 cylinder.
3. Loosen the timing belt idler pulley to relieve the tension on the belt, move the pulley away from the belt and temporarily tighten the bolt to hold it in the loose position.
4. Make matchmarks on the belt and both pulleys showing the exact placement of the belt. Mark an arrow on the belt showing its direction of rotation.
5. Carefully slip the timing belt off the pulleys.
6. dont move cam, with belt off it warns.
7. Remove the idler pulley bolt, pulley and return spring.
8. Use an adjustable wrench mounted on the flats of the camshaft to hold the cam from moving. Loosen the center bolt in the camshaft timing pulley and remove the pulley.
9. Check the timing belt carefully for any signs of cracking or deterioration. Pay particular attention to the area where each tooth or cog attaches to the backing of the belt. If the belt shows signs of damage, check the contact faces of the pulleys for possible burrs or scratches.
10. Check the idler pulley by holding it in your hand and spinning it. It should rotate freely and quietly. Any sign of grinding or abnormal noise indicates replacement of the pulley.
11. Check the free length of the tension spring. Correct length is 38.5mm measured at the inside faces of the hooks. A spring which has stretched during use will not apply the correct tension to the pulley; replace the spring.
12. If you can test the tension of the spring, look for 8.4 lbs. of tension at 50mm of length. If in doubt, replace the spring.
13. Reinstall the camshaft timing belt pulley, making sure the pulley fits properly on the shaft and that the timing marks align correctly. Tighten the center bolt to 43 ft. lbs.
14. Before reinstalling the belt, double check that the crank and camshafts are exactly in their correct positions. The alignment mark on the end of the camshaft bearing cap should show through the small hole in the camshaft pulley and the small mark on the crankshaft timing belt pulley should align with the mark on the oil pump.
15. Reinstall the timing belt idler pulley and the tension spring. Pry the pulley to the left as far as it will go and temporarily tighten the retaining bolt. This will hold the pulley in its loosest position.
16. Install the timing belt, observing the matchmarks made earlier. Make sure the belt is fully and squarely seated on the upper and lower pulleys.
17. Loosen the retaining bolt for the timing belt idler pulley and allow it to tension the belt.
18. Temporarily install the crankshaft pulley bolt and turn the crank clockwise 2 full revolutions from TDC to TDC. Insure that each timing mark realigns exactly.
19. Tighten the timing belt idler pulley retaining bolt to 27 ft. lbs.
20. Measure the timing belt deflection (Tool 23600 B or similar), looking for 5-6mm of deflection at 4.4 pounds of pressure. If the deflection is not correct, readjust the idler pulley by repeating steps 15 through 18.
21. Remove the bolt from the end of the crankshaft.
22. Install the timing belt guide onto the crankshaft and install the lower timing belt cover.
23. Continue reassembly of the timing belt covers as outlined previously in this section.