those carbs are pretty easy to remove after you've done it a few times using the tilt down method. it involves removing the two forward bolts holding the motor and loosen the rear bolt so the motor tilts down.
First you have to remove the rear bolt holding the exhaust, loosen the rear wheel and slide it forward so there is slack in the chain, put a couple wood blocks on the floor underneath so the motor won't tilt down too far and rip out ur wires.
Then remove the two engine bolts, loosen the rear one and lower the front end down gently to make sure your wood blocks are high enough to support the motor
i'm sure there's threads on this that may explain it better if you do a search
but that's the jist of it