I was told by a Makita service center tech in 2006 that the makita cutoff saws use a resistor plug. Using a non- resistor plug burns up the electronic ignition. He showed me 7 saws from a large contractor that all had bad ignitions. All caused by the well intentioned contractors mechanic putting in non-resistor plugs. He said if it calls for a resistor plug then use only a resistor plug.