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The thread goes back a lot longer than I thought it had .If I didn't say it before I had sent one carb to Eddie Anderson who at the time worked at Stihl Va Beach .They ran it through the carb lab and found internal leaks but could not determine exactly where it was .Eddie sent new a new carb...

As I said neither of my two 200's have that praticular carb with the accel pump .I'm not certain if the one I sent to Edie at Stihl did or not . If I have time tommorrow I'll run the super bee to see if my fix on the bearings/seals fixed the problem .If not I'll change the carb out from the...

Well I did seal that carb and it did start and run okay or so I thought . So today I was at c 4 Funs and we were going to do timed cuts testing a standard Stihl semi chisel in comparrison to the new full chisel they came out with .That little rascal made one cut then on a restart fell dead on...

More,rambling on .Since I'm intrigued with this thing I did a little research on Tillotsons site specifically the model HS .I have no idea what carb it actually is but an HS is pretty common . Under the trouble shooting section it mentions the fact that possibley a welch plug could be leaking...

Let me give an example I'm familiar with .C4 Fun once had a hopped up 166 Sachs alkie burner with the largest carb of any saw I'd ever seen .If you opened the butterfly and looked though it it was looking down a hole clear to the piston big enough to drop a golf ball though .The intake had been...

It's not the amount of air available on the atmospheric side of the carb but rather the area of the intake channel.Theoretically say for simplicity sake of explaination say you had a 1" venturi connected to a half inch intake tunnel .It would only pass 1/4 of the amount of air were it a full 1...

Now depending on the carb the actual jets sometimes can be changed but it would be a monumental pain in the butt .I've never done it on a saw carb but I have on a auto carb which screw out .The little saw carbs are pressed in place excepting some older models such as a Tilley HL .Where you...

You kind of have a catch 22 Jay .It's obviously from you've said is getting plenty of fuel but can't move enough air to support the charge . It sounds like the same scenario as hanging an 850 cfm carb on a stock small block Chevy 327 .With stock valves and a stock cam the thing would need...

I'd imagine possibley the high speed is not passing fuel .They will run on just the low speed but not as well as with both jets working . If you richen up the high speed does it act like it's running rich ?If it's leaning out it seems somehow it's just leaking or sucking air rather then getting...

I took some time a little while ago and pulled the carb on the super bee only to find out it wasn't the model with the acel pump . Evidently at some time I had swaped carbs with the stocker which at that time I found a crack in the fuel chamber of the super and repaired it with red loctite or...

I'm about to do the same myself .The hot rod super dooper moded 200T isn't getting it done .Sucks when I get outrun by a Poulan---long story but it will never happen again by George .:)

Well actually I might have to delve into that fix myself .It seems on my souped 200T the carb is giving me fits once again after working on the stupid thing 3 or 4 times .Leans out ,not bad but enough not to be able to get enough fuel to sustain a high speed run very long . About drives me nuts...

Yes I see what you mean .That thing is all wrong from a design stand point .With the thrust exerted by the flat on the butterfly shaft it can only put side stress on the pump piston .No easy remedy for that with the way it's built .

After seeing this thing in pictures it appears that the pump is very similar to a piston oil pump used on old McCulloch saws with the o-ring seal .I wonder if just replacing the o-ring would be cure too ? After thought : aha ,the o-ring is made of buna-n material no doubt .Real tollerant of...

I just reviewed what info I have on these little Zama's The drawings I have are pertaining to the 16 a and 32 models of this carb but they don't show that accelerater pump as being a part of the carb . Now I can't help but wonder if in fact these problems are related to just the model mentioned...

Real good info .I for one had no idea all that stuff was in there .Thanks .