Glow Plugs

During cold starts, glow plugs are used to preheat swirl chambers. When current is applied, glow plugs become red hot. A temperature sensor connected to a time circuit in glow plug relay controls pre-heating time.

To start a cold engine on all models except 5000, pull out cold start knob to left of steering column. Turn ignition switch to glow plug position (No. 2). When light goes out, crank the engine. At below freezing temperatures, depress accelerator pedal while cranking. About 2 minutes after engine starts, push cold start knob in fully.

The cold starting device of 5000 is automatically controlled by engine coolant passing over a thermostat. When engine is cold, thermostat pulls on advance lever advancing injection timing.