On the rear of the carb there should be a black plactic knob on a shaft with a spring. You will probably have to take the air cleaner housing off. Tightenen to idle up, loosen to idle down.
If it has a carburetor, then there should be a screw somewhere on the carburetor. If it's fuel injected, then I don't think you can adjust the idle without hacking into the computer.
To set the idle, adjust the carburetor.
With the engine running, turn the idle screw until you get the speed you want.
My engine is idling too high. How do I adjust the idle speed?
Find the carburetor and then adjust the idle screw however you like. You'll need a Philips screwdriver.
The carburetor on a Weed Eater Featherlite SST25 is adjusted by turning the screws on the side of the carburetor. They control the idle mixture and idle speed of the engine.
Honda Accord 1998-2002 model GEN 6 idle speed is control by internal computer. You need to bring it to the dealer to adjust this.
there is a little screw on the back of the carb. if you loosen it, it will idle slower, tighten it, it will idle faster.
There's a small screw on top of the carburetor turn that and it should work I'm not positive I just saw that's what the mechanic did
If you look on the foot brake side, just where the cable meets the carb, there is a screw a little further in, that will adjust the idle. Use a long screw driver.
1973 vw beetle
Start at 1 1/2 turns from seat and adjust for best idle at that point