cw242,
i did my timing change a few weeks ago. hold the tensioner in your hand. use a small screwdriver to "wind up" the tension spring. now get a third hand, your wife works well. holding the screwdriver to prevent the spring from unwinding, insert the assembly into the tensioner hole. obey the "up" wording on the tensioner housing so you don't put it on upside down. now finger tighten the two retaining bolts (this is where the third hand comes in, you are still holding the screwdriver tension). with the bolts finger tight, slowly relax the screwdriver pressure and let things come to equilibrium by letting the screwdriver slowly spin back a bit. pull the compression release, and using the kickstarter spin the engine over to ensure that nothing is bound up. if OK, then torque the two bolts to spec.
the wrooster