first off, what engine are we talking about here
i will assume a 93-95 ish h22a
in my opinion, buy a new spring for the timing balancer belt tensioner, its about $3, and its better to be safe than sorry
especially when the lives of all your valves are at stake, along with dinging your pistons, and ruining any number of things in your head.
buy the spring
here
illustration #12 (spring B)
honda part# 31430
its the same spring for 92-01 h22 series engines
this is just to be safe, cause i have no idea about the history of the motor or car.
the idea is to put the cover on, and rotate the engine 3 full turns counterclockwise to set the tensioner and seat the belt. after this you can tighten the bolt that sticks out of the cover. and then somehow pin the flywheel or tranny, and torque the crankshaft bolt to 180 ft/lbs
i also assume/hope that you bought the "stopper" for installing the timing belt tensioner, i had to buy this $10 item a while back, but it insures that you install the tensioner correctly and it makes it a hell of a lot easier
stopper...
illustration #25
honda part #31441
~boomer