I just picked up a used Sportster that has Mikuni carb. My only experience is with CVs and i'm trying to figure out if this thing is adjusted correctly. Can someone tell me how to adjust the acc pump correctly? I've reseached posts here and looked at the Mikuni web site but can't find anything specific.

the pump is adjusted by the screw on the upper right corner of the carb. facing the back of the air cleaner.
the factory sets the gap between the pushrod and the white nylon lever just above it at 2 mm
you can close it alittle for a little more responce off idle.

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HQ 95 ci, .575 Firestorm cams
DTT ignition
Stage eleventeen HVP heads.
10.2 to 1 comp.
Miknui 42mm
D&D fat cat

Mikuni has some pretty good manuals on their website, including a tuning manual that describes how to adjust the accelerator pump. http://mikuni.com/pdf/hsr_tuningmanual_021003.pdf
Go here http://mikuni.com/fs-carburetor.htmlto find installation guides, exploded views, tuning guide, performance guide, etc.

Mikuni carbs are more difficult to adjust, but after you have done a few it's probably a better carb for throttle response. I think Mentor gave you a good description. I have a bike in now with dual Mikuni's and the last shop had it all missed up. We sinked it with a tool used to tune multi-carbs and the fine tuned it on the dyno.

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2007 Ultra Classic
Zipper Red shift 575 cams
TMax
Zippers air cleaner
Rhinehardt Tru duals
Zippers oil pump shim kit (nice)

just picked my 1st harley, big red dekker, came with thunderheader, and re jetted to suit, ran great. installed a hyper charger to combat oil in breather problem,no more oil,. is a hypercharger a bolt on process, or is fine tuning required, it has lower idle seems good top end, air fuel mixture adj . needed ? bought some new plugs to try, please help

oh yeah its a 1988 with a mikuni, sorry i dont have any specs , on jetting, any ideas?