Memorandum

”It's important to set the valves, points, timing and check the choke (in this order) before setting the carburetor, they all work together for a smooth running engine.”, so written in the web site for the adjustment of Solex 34 PICT3 carburator on VW 1302 Super Beetle.

Thickness on throttle valve positioner screw and lowest step of the auto choke system is 0,003inch feeler gage and screw in 1/2 turn resulting 0,004 opening throttle valve, fixed idle throttle position never to be touched whatever may happen.

Never move the fixed throttle positioner screw as idle speed control as mentioned above, it's the task for volume screw and bypass screw.

Initial opening on bypass screw is adjusted on 850-900 rpm.

Initial opening on volume screw smaller than bypass screw is 2 plus 1/2 and adjust range is plus minus 1/2 turn.

And meaning volume is air mass, so closing the volume screw invites richer mixture condition.

Any adjustment on carburator must be performed while engine is warm and hot enough keeping idle speed at 850-900 rpm.

Too slow idling invites overheating.

Idling ignition timing is at ATDC 5 degree.

Plug gap is 0,70mm.

In and out valve clearances are all 0,15mm.