Gyrobob
Serious Thumper
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Posers ain't motorcyclists
Posts: 2571
Newnan, GA
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Taking the carb off the bike is no big deal. Take the tank off,.. 10 min. Take the carb off,.. another 10 min.
When you try to do stuff on a carb and you have trouble getting to various places/fasteners on it (by leaving in on the bike), you end up making compromises that will make you growl at yourself later. Carbs need to be out in the open.
Impact drivers are very necessary tools, and they do work in some desperate situations like getting these fasteners loose,.. but unfortunately the phillips head screws on these carbs are kind of soft, so you still might wipe out the slots in the head of the screw. Been there, done that. Usually then you have to dremel a crude slot in the head of the screw and use a big fat blade screwdriver to get it out, assuming you don't bust the head off the screw with this additional act of desperation.
What worked for us was to tap the heads of the screws from side to side with a punch and a light hammer while the carb was mounted in a vise. Be gentle and patient and at some point you will actually notice the screw moving a tiny bit sideways when tapped. At that point it really will be loose enough to just use a screwdriver and back it out of the hole. Please see the pics dealing with the carb rebuilds in reply #62 of the thread here, "Double Ryca Build."
Also, another good suggestion from someone here is to take one each of your carb screws (diaphragm, float bowl, transient enrichment valve cover) and go someplace that has a good selection of this stuff and replace them all with socket head screws. Life will be so much better the next time you have to get intimate with your carb. You'll need 4, 4, and 3, respectively.
Arteacher's suggestion to tighten just a bit before trying to loosen is also a time-honored and useful technique.
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