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I've used that tool on my two engines and it makes chain replacement almost idiot-proof (well, I was sucessful).
The manual says 50nm (mult by ~0.75 for ft-lb) for the M8 bolts (I think those front two are). I go back and forth slowly between the two and get up to the final value. You do not want to "screw" this up. Double-check your torque wrench and make sure you are looking on the right side of it whil adjusting if you have dual metric/english markings. There would be no worse feeling in the world to find the torque suddenly getting easier as you approach the final value. Tap (tap only) the top of the bearing with a rubber mallet as you go to relieve stress.
The bolt heads and washers should be lubricated and the threads clean but not "dry", and make sure that nothing has gotten under between the bearing and the head. It doesn't take much to bind the camshaft (replaced one of those too, and it was touchy, getting the bearings all in line while tightening).
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