If u r sure u jumped a tooth, then hold up the leading side of the chain - the side going into the engine. Make sure u hold it up tight !

Use a vice grip on the camshaft and turn it clockwise one tooth. U can do this by taking the leading side of the chain and use it as a guide on how much to turn the camshaft.

Once u r done feeding the chain, check the mark on the flywheel and camshaft markers to see if u r good to go. Make sure the flywheel is correctly aligned. Otherwise use the above method to correct the camshaft marks.

Good luck