Carburetor condition

Still now the smell of fuel remains like lacquer thinner, probably naphtha. All the vent hoses connected with fuel tank were checked and reconfirmed lust time, why still now?
Inlet hole for window washer manual pump has already closed with plastic cap, where does it come from? Some fuel of the residue must be saturated by capillary action.

VW AD air-cooled motor works well this morning without causing any strange reactions like stumbling, hesitating nor coughing.
Idling mixture ratio has much to do with the motor condition, requiring very precise and fine adjustment with actual test driving must be repeated before fixing the volume control adequate angular position on Solex 34PICT3 carburetor.
2 plus 1/2 opened position of the volume control screw from the closed condition was the adequate information as an initial terminal point.

Also inviting high octane fuel make it easy to adjust the carburetor, because the heated phase is reduced that sometimes makes a precise mixture control adjustment difficult.