How do you tighten a Polaris trailblazer 250 chain?

how do you tighten the chain on a 1999 polaris trailblazer 250

if the brake assy. is on the rear end then u need to loosen the 2 - 1/2 bolts on the bottom of the brake assy. and the to 5/8 bolts on the rear end then turn the part between the 2 5/8 bolt with a pipe wrench.