Looking to change the spark plug on a yz ...

Sure??. You should have a long spark plug spanner in your tool kit.Remove the plug cap in the middle of the valve/rocker cover.Blow down hole with compressed air.Insert the large end of spark plug spanner down hole and turn until it engages around hex . Use the spanner from your tool kit,turn anti-clockwise untill loose then use your fingers to turn the tool and WWWWWWHHHHAAAALLLLAAAA. 1 removed spark plug...Most important to blow and foreign material outta da hole as we don't want any nasties falling into our nice new engine . glad to help.please leave feedback.