I just bought a 71 starcraft jupiter with an 85HP johnson motor model V4AL-20A, the owner gave me some used spark plugs in case I needed then and they were L76V, I went to the auto part store to pickup some new plugs today and when I went to put them in I noticed the plugs in the motor are QL77JC4. What are the correct plugs for this motor?
Thanks in advance
Thanks in advance