Carburetor - Inspection and Adjustment (Automatic Choke Cont'd)

EF & EC-651prose procedure

Automatic Choke (Cont'd)

3
Check bimetal cover mark and choke housing mark. When bimetal cover is replaced, set bimetal cover mark so that it will be aligned with choke housing mark.
SMA855A

1
Check automatic choke heater source wiring for proper connection, then start engine.
SEF110C
2
After warming up the engine, ensure that choke valve is fully open.
3
If choke valve does not operate after warm-up, check choke heater circuit, choke heater and choke relay.

Check continuity of circuit.

Refer to "Circuit Diagram" and "Wiring Diagram" in "ENGINE ELECTRICAL SYSTEM".

Check for continuity between choke heater connector and choke housing.

Continuity should exist.

Automatic choke relay is installed in the engine room.

Check relay for proper operation. Refer to "STANDARDIZED RELAY" in EL section.