recommend .030 "
ngk BPMR4A
Champion RCJ8Y. Very common plug for smaller 2 cycle engines. Champion RCJ8Y. Very common plug for smaller 2 cycle engines.
3/4
The correct spark plug is a Champion RCJ8Y.
3/4 inch socket - .030 gap
Tecumseh Part #611049 - Champion Spark Plug #RCJ8Y
I found it in Champion spark plugs as "RCJ8Y"
check specs
The appropriate Champion spark plug for an Ariens snowblower typically depends on the specific model and engine type. However, many Ariens snowblowers commonly use the Champion RCJ8Y spark plug. It's advisable to consult the owner's manual or check with a dealer to ensure the correct spark plug for your particular model.
rcj8y has a built in resistor to protect electronic ignitions from spurious signals also to reduce interference to TVs etc. i.e. the R in the plug designation indicates resistor.
Champion RZ7C or NGK CMR7H are listed as equivalents but check thread length and porcelain length.