Evinrude 6hp. E6RENM. SPARK PLUG GAP?

[wingnut1]

WHAT SHOULD THE PLUG GAP BE? i BOUGHT NGKs BZ7HS 10


THANKS.

 

[tx1961whaler]

Re: Evinrude 6hp. E6RENM. SPARK PLUG GAP?

1992 model 6 HP
The chart I have lists Champion QL77JC4 or QL86C at .030"

 

[wingnut1]

Re: Evinrude 6hp. E6RENM. SPARK PLUG GAP?

OK so should NGKs be gaped the same as the champ?

 

[tx1961whaler]

Re: Evinrude 6hp. E6RENM. SPARK PLUG GAP?

I would assume so, but I wouldn't put NGK's in my Evinrude, either. The motor was designed around the Champions, and all spark plugs aren't the same. If the NGK is at a too high heat range, then bye-bye pistons.

 

[ezeke]

Re: Evinrude 6hp. E6RENM. SPARK PLUG GAP?

Agree with tx1961whaler. The motor was built, designed and tested with QL77JC4 Champions. Set them at .030. Those plugs are available just about anywhere.

 

[Vic.S]

Re: Evinrude 6hp. E6RENM. SPARK PLUG GAP?

Champion are the approved plug but if it is any consolation for my '84 6hp I have the original QL77J4s and a set of NGK B7HS-10s. The NGK plugs are in service at the moment, gapped at 0.030". The original spec was for a gap of 0.040"

The equivalent of QL77JC4 is BZ7HS-10 these incorporating a low resistance, inductive, suppressor which is appropriate for CD ignition systems

NGK plugs seem to be more widely available than Champions in the UK, that being the reason I have them.

Changing between Champions and NGK or from 0.040" to 0.030" as made no discernible difference.

Answer to your question is 0.030" but increase it a little in the unlikely event of plug fouling