Thanks for both your replies. The engine is a
Tecumseh engine VAN 148 E-36142D. I don't know what the coil is - probably not a Victa but it is just the coil that is supplied with this engine - no info about it in the manual. I google searched as I thought there must be a method of...
I have taken the coil off the engine and tested the resistance using a multimeter and following instructions on you tube video
PushMowerRepair.com - Testing a Victa Ignition Coil which seemed quite similar to my coil. I get readings of 4.19 K ohms but I don't know what the resistance...