Sparkplug for HF 79cc 2.5 hP

[Elmo]

Can anyone tell me what domestic sparkplug will work in my HF engine?

 

[Dan]

Was wondering also Elmo. Will find out.

 

[Elmo]

Thanks Dan, I just bought two HF 2.5 hp engines from dirt cheap and one needs a plug. I paid $42 for the first one and $32 for the second one. I just couldn't walk away from that one. Looks like i have some bike building to do.

 

[Dan]

OH MAN, score!

 

[Dan]

Still looking Elmo, but found these, Scooter Spark Plug E6TC The scary part is these are said to be for 2 smokes? Does it matter? The plug off my HF is a E6TC

Found it. NGK would be BKUR6ET and champion would be; KY7YKJCR. HF manual says gap is 0.027” to 0.031

(sources; Nanjing Huade Spark Plug Co.,(NHSP) and http://manuals.harborfreight.com/manuals/97000-97999/97964.pdf )