New configuration of S1R wire coils assembly from 2008 turns out to really be electromagnet providing extension of timing for mower engine running on
water to hydrogen from spark plug electrolysis. It also provides required magnetic field over plug wire , down to plug electrodes. Special wind of 3 wires as - #14 , 7t 90degrees over 5 turns Hi V cable, 13 turns #14 over steel core and Hi V cable. See photos on Internet. The original S1R9A9M9 (2 )You tube videos showed Inverter box in background, not hooked up. That green 400Watt box was the same one normally used with the several earlier car engine conversions. Statement said it could not be used with 4 cycle mower engine. The real reason of this, was that the SiZE of box could not be hidden in hole of cement block with engine shaft. (A smaller 300Watt unit was used.) This smaller box fits cement block hole. The other plastic deli tub of parts, hanging on side of engine, was also painted over so we could not see in. Therefore the 3 technicians did not want to reveal all their technology from 2005-2019. Part of DC current , supplies the primary side of inverter , while several amps dc runs the electromagnet. Battery start. Battery fully removed. The circuit then ran on the dual type alternators with max 15 amps output DC, after rectification. The high resistance of salt water at plug tips requires about 100 volts to get current to push through.The cars used 6-7 Peak amps at low duty cycle. Nathren used 10 amps PEAK DC as about 1 amp average current. See videos with Briggs 18HP riding lawnmower engine on cement block running on water flow to carb. Self running using Hydrogen gas + water vapor pressure. Low power of
course but works.