Full Electric Choke System: Description
All Omni & Horizon engines require electric power to heat the automatic choke system. An electric heater and switch are sealed within the choke housing. Electric current is supplied to this unit from the oil pressure switch. Above 4 psi oil pressure, the oil sending unit contacts close and power is available to the choke control switch.
At winter temperatures, the choke switch is open to reduce heater output until choke area temperature is relatively warm. It then closes to provide full electric assist to open the choke. In summer temperatures, switch provides maximum choke heater output for a shortened choke on time.