When converting an existing electric ignition petrol engine to use this CDI unit the required magnet should already be mounted on the engine. When converting a non electric ignition petrol engine, or a glow engine a magnet will need to be purchased (see below) and fitted.
When converting glow engines to run on petrol the compression ratio often needs to be reduced, this can be done by fitting extra head shims to the engine. These can be purchased for all the engines we sell here: Engine Spares.
Click the image to see a moving image showing TDC and where to set the timing for magnet installation.