Correct Spark Plug for a KG-7H Huricane?

[jimi]

I have been told champion L77JCS sparkplugs and CHA823(J6C). But there is a big difference in length?

 

[Chinewalker]

Re: Correct Spark Plug for a KG-7H Huricane?

Do NOT use a long reach plug in that motor - they WILL hit the piston! I run Champion J6C plugs in all my Merc racing motors.