Spark plug

[Kirch76]

What spark plug would you run for a tecumseh ohh60 with a header, cold air intake and an adjustable hs50 carb?

 

[David wulf]

What ever fits it stock .

 

[thcowboy]

Do a stock one first, get a spark plug a heat range or two higher and see if you get a bit more
power

 

[Kirch76]

How do I tell what a higher heat range plug is? The info I found on the factory plug is RN4C CHAMPION SPARK PLUG,Replaces Autolite 403, NGK BR6ES, tecumseh 34645

 

[bikebudy]

With a NGK BR6ES , you would need a 5,4, or 3 to get a hotter plug.

The higher the # the colder, 7,8,9 etc.

6 is a pretty hot plug, going hotter is not needed, unless your running in the winter?

 

[bikebudy]

Optional spark plugs
Champion RN4C - Alternative spark plugs

 

[Kirch76]

Thanks appreciate the info