How do you change fork oil on a 1971 Suzuki r250 motorcycle?

To change the fork oil on a 1971 Suzuki R250, first, remove the front wheel and brake caliper for better access. Then, loosen the top fork caps and drain the old oil by removing the lower drain screws, allowing the oil to completely flow out. Once drained, replace the drain screws, and refill the forks with the appropriate type and amount of new oil through the top caps. Finally, reassemble the forks, ensuring everything is securely tightened.