Hi there, please see starting steps below and references to dealing with choke:
STARTING
Open fuel tap.
Set the speed control lever to the starting position.
Close the choke lever of the carburettor (leave the choke lever half-open position during
warming up the engine – petrol engine only).
Pull the recoil starter strongly.
After the engine has started open the choke lever fully and warm up the engine for 2-3 minutes in the low speed position.