Ignition System: Service Precautions
Caution!Because of the damage that may result from flashover at the ignition coil, HT leads, distributor and the amplifier, the following must be observed:
^ Never disconnect an HT lead when the engine is running.
^ Never attempt to start the engine if any HT lead has been disconnected or if the distributor cap has been removed.
^ Before carrying out a compression test or the like, always disconnect the amplifier.
To check the ignition spark, proceed as follows:
^ Unscrew the spark plug or use a separate plug.
^ Connect the HT lead to the plug.
^ Hold the plug against the engine so that it is well earthed.
^ Check the spark.