Mechanical device

After some experiences of smooth motor control of NCP10 TOYOTA Vitz, that's fully computer controlled nowadays automobile, Bocar 34PICT3 carburetor in VW 1302 Super Beetle shows defects on earth. It's impossible to compare each other in any phase.
The transients from low to middle and from middle to high is not so smooth as Vitz, so I felt this morning.

Much more precise adjustment and firm setting must be done.
The key to success on the mechanical carburetor is the mixture setting on the very initial stage, idling mixture setting!
The lower the atmospheric temperature fall down, the richer fuel mixture is required.
1/8 clockwise rotation on air volume control screw would improve all the responses that had been caused because of leaner fuel mixture.