OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Walk Behind Lawn Mower Frames Reel Lawn Mowers, Atco & Villiers etc. Ransomes 51 with Kubota engine

The Kubota engine is very fussy about its plug. It has to be the correct resistor plug (BR5ES NGK) or it will give you all sorts of problems. The correct gap is 0.7 to 0.8mm (0.025 to 0.031in)Clearance for the rotor to ignition core is 0.5mm (0.020in) Coil resistance is: primary approx 0.6Ohms, secondary approximately 12.6kOhms. The manual states there is no allowable limit deviation from the gap settings. Also check the HT lead from the coil as I had one once that had a faulty lead.