I have a Johnson 200 HP (200TLCTS) - 83? outboard. Trying to find out what the proper spark plug. Bought used. Plug in it differers from plug shop wants to use.<br />Looking for spark plug chart or an answer.<br />Tks, jimf
Welcome!!<br /><br />In addition you can use the (Q)L77JC4. It works quite well on todays fuel. Its really best to stick with Champions in that motor.<br /><br />good luck!