For DG-400, DG-500M, DG-500MB, DG-800B, DG-808C, DG-1000M Service Info 100-2018 is published handling exchange of sparkplugs and sparkplug-connectors when applicable.
You can find the Service Info here
For DG-400, DG-500M, DG-500MB, DG-800B, DG-808C, DG-1000M Service Info 100-2018 is published handling exchange of sparkplugs and sparkplug-connectors when applicable.
You can find the Service Info here