correct spark plugs?

[patrick4266]

I cannot find the spark plug info I need in my manual. Can some one please tell me the correct plugs for a 1972-85 hp rude?

 

[rickdb1boat]

Re: correct spark plugs?

I don't see a 1972 85 HP. But the 1973 - 1980 used QL77JC4 Champion..

EDIT: 1968-1980 source also shows the same QL77JC4 plug...

 

[ezeke]

Re: correct spark plugs?

Minority opinion: I would use the Champion L76V.

 

[patrick4266]

Re: correct spark plugs?

thank you