82 kz550 not shifting into second

Hey guys I have a 82 kz550 ltd and I was riding it today and noticed when I shift to first it well feel like the chain well catch to go and then nothing and then you well feel it catch on the sprocket again and then I try to shift to 2nd gear and it won't shift, feels like it's topped out on gears, would during if anyone had the same problem as me and knows the answer. Thanks

Have you cleaned, lubed and adjuster the actuator in the sprocket cover?
Steve