Mariner 15 spark plugs

[gittygoat]

Can anyone help? <br />found one NGK BR8HS and one NGK BR9HS fitted to second hand motor. Which is correct (if at all)<br />as I want to renew. <br />Motor is 15hp two stroke Mariner 15 E. serial 684CS 250842<br />1980 I think<br />Made in Japan.<br />Thanks

 

[Fouled Plug]

Re: Mariner 15 spark plugs

If running NGK's, your plug should be B7HS-10 gapped at .038

 

[gittygoat]

Re: Mariner 15 spark plugs

So it looks like I shouldn't have had resistor plugs fitted anyway. Thanks for the advice, much appreciated.