Choke jet -DELLORTO (type: 7746) PHBH, PHBL- 55

The choke nozzle is mainly responsible for the amount of fuel delivered during the starting process. If it is too small, the engine does not respond well to the throttle during the cold start phase, if it is too large, it can quickly lead to defective spark plugs due to a mixture that is too rich, in addition the engine running is very uneven.