624-21650 Thermostat, DWS Lister Petter engine.
624-20930 Thermostat, used in the DWS Lister Petter engines. Same part for Turbo and Non-turbo engines. The DWS model engine was also used in the SDMO T25C2M, T30U, and the TM30 line of generators, and in the Armstrong ALPW 30 generators. This will be item number 10 in the Lister Petter drawing.