How do you tighten the chain on a jr 80?

To tighten the chain on a Suzuki JR 80, first, place the bike on a flat surface and ensure it's in neutral. Locate the rear axle nut and loosen it slightly. Then, adjust the chain tension by turning the adjusting bolts on either side of the swingarm until the chain has about 1 to 1.5 inches of slack. Finally, re-tighten the rear axle nut to secure the adjustment.