rc is a taller electrode plug physically so im stumped ?? and has taller and different center electrode than "QC" may interfere combustion cycles. maybe not enough tech data on these forums
rc is a taller electrode plug physically so im stumped ?? and has taller and different center electrode than "QC" may interfere combustion cycles. maybe not enough tech data on these forums
Yes
no
your dum
I found lots of replacements for the Champion rc12yc but none for the yx. Are they the same spark plug? Why wouldn't anyone carry a spark plug for a lawn mower that's two years old?
I have interchanged them and it seems to work. Everything is the same apart from the hex wrench. The hex on the RN12YC is 13/16" (20.6mm) and on the RC12YC it is 5/8" (16mm).
I was wondering the same thing this afternoon
GAP .030"
Rc12yc
A champion RC12YC spark plug is 14mm thread diameter. The torque for this size is 18-22 foot-pounds (25 to 30Neuton·meters)
Not really, but that is the only plug Sears sells as a substitute. The RC12YC plug looks like it was designed for a gap of 0.035-0.040", while the RC12YX plug was clearly designed for the recommended 0.020" gap. The RC12YC electrode is a fat cylinder like most spark plugs, while the electrode of the RC12YX is cut down to about half of the diameter. I'd guess the special RC12YX makes it easier to start the engine on a single pull.