Man, I hate that too. Rule number 1, never let someone tune your stuff till they PROVE they can tune their stuff better than you tune yours.
Here's my 2 cents on getting things back to normal. First, pull the filter and reset the idle adjustment screw so that there is a 1mm (roughly) opening when the throttle barrel is all the way in. This is what makes it "idle" so high. Most engines will idle slobbering rich on the low end and the HSN almost all the way out. Once you get the idle screw set, but the filter back on and zip tie it.
Returning the needles to "factory" will achieve this, but you can run the HSN out another couple of turns and it will still idle, though high end most likely won't run due to over rich settings, but this is to get it back in tune.
Once you get it so it idles ok, start tuning the HSN. I hope your engine doesn't have a 3rd needle (stock 21BB does, don't know about the 25). If it does, make sure the top of the MRN is flush with the carb body. Use a razor blade to make sure. Anyway, don't worry about the LSN right now, just adjust the HSN till it will move under it's own power and keep leaning it till it will run at almost max RPM. Then start tuning the LSN so that it will idle for about 5 to 10 seconds and not bog down when you nail the gas. When you're tuning the LSN, be sure to richen the HSN a tad if you lean the LSN, and vice versa. Once you get it so that there is very little hesitation when you nail it, start fine tuning the HSN with a temp gun, and do not touch the LSN or the MRN again. For that matter, NEVER touch the MRN, EVER. The LSN will need some tweaking from time to time, and the HSN will all the time (day to day), but you should be back to where ya were before the "expert" got a hold of it.
Don't let this get you down, the above procedure should take a tank or two and it's not that big of a deal, just a pain in the rear.
Whitt...
Originally posted by SkyMaxx
The idle set screw should only be adjusted if the engine fails to idle properly.
I think he said that it doesn't idle. One speed only, WOT as soon as it fires up.
:whack: UGH! I could smack my boss around! Took the new savage to work today and after getting the 4th tank of fuel ran thru the boss decided he was going to "fine tune" things abit.......needless to say he did a lousy job, as soon as it starts it up to full throttle, he said he adjusted the high and low settings, and messed with the idle screw also.........so after I got home I took the high and low settings to bottom and 4 full turns out which according to the book is what factory seetings should be, but it didn't get any better, so looks like we are going to go see the LHS tomorrow so he can give it a propper tune up. Man I am depressed now lol!
