Briggs Spark Plug Help

[dennis]

I have a Briggs and Stratton twin cylinder Mod. 446777 Type 0246-E1 Code 021212YG01545 engine on a Craftsman lawn tractor.

The Craftsman owners manual says it takes a Champion QC12YC spark plug. Supposedly, the Champion RC12YC plug is an acceptable substitute because it crosses with the Briggs 491055S plug that is shown in the IPL for this engine. I have heard that the QC plug should be used so as not to cause problems with the ignition system. I just called Briggs and when I told them what engine I had, they said the RC plug was ok to use. There is a big difference in the price of a OC plug vs an RC plug. I am confused, because I could have sworn that at one time Briggs said only to use the OC plug. What do you folks think about this????

[KE4AVB]

Your engine doesn't appear to EFI fuel injection so the RC12YC should be fine. It is EFI systems that they worried about electro-magnetic pulses affecting.

[dennis]

Thanks, KE4AVB....you are right...it does not have fuel injection. Thanks for information.