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The 130 has a rotary style carb, so the only adjustment is down through the top of the throttle spindle, you will need a very small flat blade screw driver, the screw down here will lift or raise the needle in the carb, there may well be a plastic plug to remove before you can get deep enough to adjust it.
Regarding the adjustment procedure you generally start your low and high mixture screws at one turn from seat, or slowly turn them in all the way until they bottom out and then back them out one full turn. You will adjust the high speed mixture screw at full throttle and get the median point between too rich (loads up) and too lean (dies out). You will want to do the same thing with the idle mixture screw, just adjust at idle rpm. You will also adjust the low idle mixture screw to give you a smooth transition from idle to throttle up. Once this is obtained, you adjust the third or idle speed screw low enough so the chain does not turn at idle rpm but high enough so the saw doesn't cut off. Hope this gets you going.
See if there is a Philips-head set screw on top of the carburetor (it is the idle speed adjusting screw) that you can turn counterclockwise backing off the idle (and possibly the wide-open throttle) speed. This is the simplest solution for you unless you wish to remove, disassemble and inspect the carb. Also, check the throttle cable to the carb, make sure it is not hanging up or binding near the engine where it connects onto the throttle plate shaft of the carb.
Turn both screws CW to stops (lightly), then back out each CCW 1-1/2 turns. This should get the engine running if it will. If it does not, check the lower diaphragm on the carburetor for hardness or cracking. You appear to be running on prime only--the carburetor doesn't seem to be pumping in fresh fuel. You may need to do a carburetor clean and re-kit. Check the fuel line condition and the fuel filter in the tank for plugging. Make sure the muffler and air cleaner are not plugged. Once you get the engine to continue running, warm the engine up. Open the throttle and adjust the H needle CW--the engine should start to speed up, but still 4-stroking. The proper setting is 4-stroking, but immediately 2-stroke when cutting. Release the throttle and adjust L needle CW so that the engine runs fairly smoothly, yet will allow the engine to 'follow the throttle'. Set idle speed screw so that the chain stops turning, but the engine continues to run. Hope this helps!
That may be to keep dirt out. One of the screws should be for the richness setting and the other for the idle speed.
Adjust the richness setting so the tool runs the best (fast) then turn the idle speed down to normal.
Make sure you always keep the air filter cleaned or dirt will get into the carb and cause you to have to clean out the jets in the carb.
You have found the HI and LOW settings. The idle wouls be set by starting and warming the unit up. After warm up, take your screwdriver and turn the LOW screw OUT until the engine starts to lose RPM's. Turn the screw IN until it starts to lose RPM's. Once you have those two points, back the screw about halfway between. You can do the same for the HI setting if you need to. Good luck...Lee
On the bottom of the carb. there is a plate held on by one screw, take that plate off and very lightly clean the screen on the carb with a bread tie wire, this worked very well for me. Mine runs great now:)