Need to know the year of the vehicle as this is important to know if it is a manual or electric choke. If it is manual, just buy a can of carb cleaner at your local parts store and spray the butterflys and entire carb until the gunk comes off then spray all linkages with a white lithium grease or WD40. If it's electronic, a little more work needs to be preformed. Essentially the same though. Oh yeah, make sure the vehicle is NOT RUNNING when you do this!
Unscrew the current choke and screw in the required choke. Making sure to clean the threads before hand.
Clean and adjust the carburetor. Also clean the air filter.
clean the carb
Clean, adjust, and lucbricate
A common cause for an automatic choke to stick in a 318 Dodge truck is a dirty carburetor. A spray can be used to clean the carburetor to stop the choke from sticking.
If you have to turn the choke on a little, the motor is starving for fuel. need to clean the carburetor
The pilot jet is clogged, get a new one or clean it very well, add fresh gas and go...but you might need to clean the carb some.
NO
If it runs with the choke on, Then it will not do any good to adjust them. It is running lean/ not getting fuel. The carburetors have dirt in the fuel jets and that is why it won't run when choke is off. When choke is on that richins the fuel up and it try's to run. Need to clean the carbs out.
They could make you choke, if there really dry.... And some might not be too clean.
Sounds like the main jet inside the bowl of your carb may be plugged, there is no adjustment on that choke of that bike it is either full open or half open. take the carb off the bike and clean the carb fully outside and remove the bowl and clean the passage ways of the jet or order new one, reattach and try it again.
did you clean the air filter? is there enough petrol? is the string or attached spring broken? do you have a choke?