Where are all the screws - Acer Aspire 3050-1733 Notebook

There should be three adjustments on the carb, the tick over screw, a L screw and a H screw, the tick over screw is quite simple screw it in ti increase the engine revs at idle, the L and H screws will need a special tool as they have splines and not a screw driver head, very basically the L screw will adjust the mixture from idle up to half throttle the H screw will control the maximum high revs, if the screws have not been touched then you can adjust from where the are, they are both fuel screws so unscrewing will richen the mixture, if the machine struggles to accelerate, unscrew the L screw a little and try again, try unscrewing a little at a time untill it picks up nicely, the L screw will always be the closest to the cylinder.

If the two screws are side by side, one is the high speed mixture screw and the other is the low speed mixture screw. To set the high and low adjustment screws, tighten the screws in until they stop, don't force the screw after it stops. Back each screw out 1 1/2 turns. The engine will start and run here if everything else is ok. Fine tune each adjustment screw by closing the screw off (CW) until the engine runs rough. Back the screw out (CCW) until the engine smooths out. Run the engine at full speed and adjust the high screw. Let off the trigger and adjust the low screw. Once the mixture screws are adjusted, you can turn the idle screw to adjust the idle speed. It can take some time getting it all adjusted.

Almost!
the black screw is the "common" so the hot wire or the colored wire (usually black or red) bringing power in goes on to the black screw and all white wires (neutral) get connected together. you need to verify which wire has constant power when all wires are disconnected and separated first.

*White wires all connected together separate of the switch
green screw = ground or bare wire
black screw = hot wire/ wire with constant power
silver screws = (switched terminals) black or colored wire from each device being powered (eg. light) per screw

The the two screws arew fuel screws so the more you unscrew them the richer the mixture gets, the screw nearest to the cylinder will be the L screw, this will adjust the mixture at idle and up to approx half revs, the other screw is the H screw and will adjust the mixture from half revs up to full revs, because this screw controls the max rpm you must never exceed the manufacturers permisable max rpm or the machine could seize, this should be set with a suitable tacho.

There are many different kinds of carling switches.
Generally a carling switch has 2 or more screw terminals, consisting of the center-or-middle screw, and the screw-or-screws on end of switch
The middle screw is Common screw > this is where you connect Hot wire from circuit breaker or battery.
The wire going to load (light, fan, motor) connects to screw on end of switch.
In the case where switch has 1 middle screw and 2 screws on end of switch, the Hot connects to middle, and then Load wires connect to each end screw. When the switch is toggled back and forth, one of the end screws receives power, or the other end screw receives power.

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Screw terminals are color-coded on each switch. They vary by device.

Green screw always ground
Silver screw always neutral > except some 4 ways switches
Brass screw is hot > can be hot from breaker or hot wire going to load > or in 3-way switch can be hot traveler wires from other 3-way switch
Dark screw is hot > can be hot from breaker > or in 3-way switch is hot going to load

Single-pole switch:
2 brass screws > hot and load wires connect to either screw

3-way switch:
2 brass screws connect to travelers
dark screw goes to hot from breaker and hot to load

Switch-plug combo and pilot light switches:
dark screw goes to hot from breaker
silver screw to neutral, brass screw goes to load

Double switch:
dark screw goes to hot from breaker
brass screws each go to load

Receptacles:
brass screw goes to hot from breaker and to hot going to next receptacle
silver screw goes to neutral and to neutral going to next receptacle.

You don't need a wiring diagram.
The screws tell the story.

On one side of device has 2 screws.
On other side has 2 screws.
Green screw is for bare ground wire.

1) One side will have dark screws and the other side will have brass screws. The dark screws will be connected together with a brass plate. The brass screws will be separate.
-or-
2) One side will have brass screws and the other side will have silver screws. The brass screws will be connected together with a brass plate. The silver screws will be separate.

#1 Hot from breaker connects to dark screw. Wires to Load (light,fan) connect to brass screws.
-or-
#2 Hot from breaker connects to brass screw. Wires to Load (light, fan) connect to silver screws.

I hesitate to answer question because the color of the screws is not identified. The holes are not identified which color screw they are next to. You can fill in these blanks when answering if the following information is not complete.

First of all, the green screw goes to bare ground wire and isn't discussed further

Usually a single pole switch has 2 brass-colored screws.
This tells you the wires from old single pole switch can connect to either screw.
Normally the quick-connect holes are located next to a screw >> that screw and the hole are connected. Sometimes there are two holes next to a screw >> and the same rule applies that holes are connected to screws they are next to.

If your switch has two screws and the colors are brass and silver, then that tells you something else.
It says that black-hot-wire-from-breaker connects to brass screw.
And wire-going-to-load (fan, light, motor) connects to silver screw.
If you do not know which wire is which, connect wires, if device doesn't work, then reverse the wires.
Again the quick-connect holes are located next to screw they are connected to.

If your switch has threes screws, then that switch has 2 brass screws and 1 dark screw.
You can wire this device as a single pole by connecting wires to dark screw and either brass screw

cripes I think you may have mixed your screws up?
1 it sounds like you are using a self tapping screw (it has a greater distance between each layer) rather than the tight screws which are for fitting the circuits together.
2 I believe there are three screw holes for the disc reading part of the dreamcast and you really only need two to keep the disc player in place, so also try another hole.
3 and one last thing to check you haven't put a screw underneath the board already?