Spark plugs?

[Keller1490]

Does everyone agree on the ngk plugs? What plug does everyone recommend and the gap?

 

[racerxxx]

I wouldn't run anything but an NGK in a 2 stroke. As far as the gap, there "should" be a Engine Emission placard in on the fiberglass under the hatch area that should list the exact plug and gap. It is at least on my Rotax powered boat and I would assume that it needs to be there for the "emissions police" when it was built.

I think the NGK BPZ8HS-10 is the plug for the Merc's with a gap or 0.040" or 1.0mm

 

[Keller1490]

Thank you. There isn't a placard in this dinosaur.

 

[racerxxx]

Um, my boat is a year older and it has one. Wait, I think it has 2 since it's a twin engine. Either way, I think that is the correct info you needed.

 

[Tomfrmnh]

Thank you. There isn't a placard in this dinosaur.

Which engine do you have? 210hp calls for surface gap and 240hp .040.

 

[Keller1490]

I have the Mercury 240. I looked through the forum but couldn't find anything.

 

[Tomfrmnh]

Those at the numbers from the service manual.

 

[Keller1490]

Thanks for the quick responses. Runs like a champ now. I think 3 seasons on the plugs were too much. That and the new impeller and stainless wear ring from impros, this boat is fun again.

 

[Tomfrmnh]

Awesome. I am a new owner and have some work ahead of me so I upgraded to premium member to get he manuals. Definitely worth it for those alone.

 

[Keller1490]

I really eed to do that as well