Need to adjust timing chain on a 1980 KZ440 Kawasaki motorcycle

Ok ,under the carbs there is an adjustment tha can be made. It stands out about 2 in. just below and centers the carbs. It has a bolt head that you can turn to change the tention. If this does not fix the problem then you need to remove the valve cover and check the guides and top tesioner slide for wear. Hope this helps

There should be a spring loaded pressure bar with a external set bolt you loosen a little to let the spring push the bea against the chain.