How do you tighten chain on a 1982 Yamaha seca xj550?

To tighten the chain on a 1982 Yamaha Seca XJ550, first, locate the rear axle adjustment bolts on both sides of the swingarm. Loosen the axle nut and then turn the adjustment bolts evenly to tighten the chain to the appropriate tension, which is usually around 1 to 1.5 inches of slack. After adjusting, recheck the chain tension, ensuring it is even on both sides, and then securely tighten the axle nut. Finally, spin the rear wheel to ensure smooth operation before riding.