Spark Plug Help???
 

The spark plug that came with my Chinese engine is marked 'A7TC'. I believe this is the standard spark plug that come with all Honda clone scooter engines of similar 125cc size. I want to purchase an NGK iridium equivalent but I am getting conflicting information of if I need a CR6HIX or a CR7HIX and I am also seeing it is offered in resistor and non resistor. Can someone in the know of all worldly spark plug knowledge help me with this? Thanks


/

Ok further research tells me I need NGK CR7HIX but I would still appreciate if anyone can confirm. Thanks

http://chinariders.net/showthread.php?t=14251
Denso IUF22 also quite good.

Thanks human, I have now learned the difference between the 6 and 7 is heat range. The 7 is the recommended plug for my temperature range here in Florida. The 6 is for colder climates.


/

Exactly right, and that language applies to other NGK plug sizes as well, including the B and D.