The accelerator pump only works from closed to open throttle - literally just a single shot of fuel to stop it from stumbling on a lean fuel mix. Don't go messing with the screws on the linkages. There are fast idle adjustments and choke settings affected by them and not knowing when or how to adjust them can turn ugly. Resetting the choke butterfly spring tension on the thermal wax pellet choke takes near superhuman strength to override the main loading spring and can crush a finger lol (and that is only IF you are able to get the anti-tamper screws off it to make the necessary adjustments). The actual wax pellet 'is' still available but you will have nearly zero chance of successfully installing one. *extra tip on the wax pellet choke - if you see a thick looking grease built up around the actuator rod on the choke assembly, that is the wax that is meant to be inside it and it has failed. Yes - the Mikuni is a BIATCH