1984 evinrude 115 commercial or regular?

[2770]

I have an evinrude 115 1984 and the sparkplugs in it are ngk bz7hs10 they work fine but I want to replace them and they are a fortune.About 7 bucks each.I can use ngk br7hs according to the ngk book.the bz is for a commercial motor and the br is for the regular motor.How do I know which I have?My motor is light blue from top to bottom. (

 

[Joe Reeves]

Re: 1984 evinrude 115 commercial or regular?

2770..... A 1984 Evinrude 115hp would be better suited using Champion QL77JC4 or L77JC4 plugs gapped at .040. The "Q" indicates a resistor plug to help quiet electrical interference in any electronics.<br /><br />If you're going to use NGK plugs, use B7HS-10 plugs, also gapped at .040.

 

[DJ]

Re: 1984 evinrude 115 commercial or regular?

Ditto Joe.<br /><br />You can pick up the Champions at Wal Mart for around $2.00 a piece, They work great.

 

[2770]

Re: 1984 evinrude 115 commercial or regular?

Thanks,I will try the champs.Would you happen to know how I can tell if my motor is a commercial or just a regular old motor???Charles