Vehicle fuel system Volkswagen Beetle 1

Power system maintenance
The fuel system includes: fuel tank, fuel lines, fuel pump and carburetor. The fuel tank is in front of the front axle. The amount of fuel in the tank is indicated by a pointer....

Carburetor — design description
Carburetor: 1 - carburetor cover; 2 - bolt; 3 - needle valve float; 4 - float with an axis; 5 - corrective air jet with a mixing tube; 6 - idle air jet; 7 - adjusting screw for...

Carburetor adjustment
All variants of the Kafer car considered in this manual are equipped with a carburetor of the same type, in which, depending on engine power, the diameter of the diffuser and the...

Fuel supply problems
In case of violations of the fuel supply, the power supply system must be checked in the following order. Check if there is fuel in the fuel tank. Disconnect the fuel hose from...

Removal and installation of the carburetor
Removing Remove air filter. Disconnect the electrical wires from the automatic start and the air-fuel mixture cut-off valve. Disconnect the fuel and vacuum hoses from the...

Air-fuel mixture cut-off valve check
If this valve malfunctions, the engine does not start or has poor idling parameters. Turn on the ignition. Connect and disconnect the electrical wire from the valve several times;...

Accelerator drive adjustment
Install the accelerator cable on the clamping bolt so that when the accelerator pedal is fully depressed (assistant presses it) there was a gap between the throttle lever and its...

Dismantling the carburetor
The carburetor needs to be completely disassembled, as a rule, only when its overhaul is necessary. This work must be carried out in a specialized workshop. In the event that dirt...

Removing, checking and installing the float needle valve
The float needle valve controls the flow of fuel into the carburetor. With the needle valve closed, no fuel should flow into the carburetor. Removing Remove air filter. Disconnect...

Checking and adjusting idle speed
Start a warm engine and leave it running. The oil temperature should be approximately 60°C. Remove the air filter; air damper (top choke in carburetor) must be fully open. Adjust...

Checking and adjusting the CO content in the exhaust gases
Start a warm engine and leave it running. The oil temperature should be approximately 60°C. The choke in the carburetor must be fully open. Adjust the idle speed with the...

Throttle damper adjustment
From August 1975, manual transmission vehicles were equipped with a carburetor throttle closing damper. The damper provides delayed closing of the throttle during sudden "gas...

Throttle adjustment
Attention! The position of limit screw 1 is set at the factory and this setting cannot be changed. If the screw has been turned, the adjustment must be made again. Unscrew stop...

Checking and adjusting the air damper gap
Since March 1978, the choke gap can be adjusted in the carburetor of the Kafer 1200. This value must always be checked and adjusted when the warm engine runs erratically. The air...

Checking the thermal switch
From August 1975 accelerator pump supply ( see table at the end of the chapter ) adjustable depending on the intake air temperature. The supply is controlled by a thermal switch 1...

Checking and adjusting the fuel supply by the accelerator pump
The fuel supply of the accelerator pump must be checked in cases where the fuel consumption is too high, the throttle response is too poor when adding "gas", the engine does not...

Automatic start — general description
When you press the accelerator pedal before starting a cold engine, the throttle lever is pulled down by the accelerator rod; this opens the throttle valve. At the same time, the...

Removing, installing, adjusting and checking the heating coil
Removing Disconnect wire "masses" from the battery. Disconnect the electrical wire from the automatic start unit. Unscrew 3 bolts on the block cover, remove the cover together...

Replacing the accelerator cable
Accelerator pedal elements: 1 - accelerator lever; 2 - spring; 3 - accelerator pedal; 4 - carburetor cable; 5 - axle with bearings The accelerator cable connects the accelerator...

Removal and installation of the fuel pump
Removing Disconnect the fuel lines from the pump, plug them with plugs. Remove the nuts from the fuel pump flange, remove the pump. Remove pump pusher with gaskets and...

Removal, cleaning and installation of the strainer of the fuel pump
The pump can be left in place to clean the strainer. The filter must be cleaned every 15,000 km. Attention! Observe fire safety measures! 1 - from the gas tank; 2 - mesh fuel...

Air filter replacement
Depending on the vehicle variant, the engine can be equipped with either a dry or inertial oil air filter. Dry air filter Removing Disconnect the gray vacuum hose and hot air duct...

Removal and installation of the fuel tank
Removing Attention! Observe fire safety measures! Open the trunk lid. Remove the clamps from the filler pipe and from the fuel tank vent pipe. Disconnect the wire from the fuel...

Removal and installation of the fuel level sensor
All models except Kafer 1303 Removing Disconnect wire "masses" from the battery. Attention! Observe fire safety measures! Open the trunk lid. Disconnect the wire from the fuel...

Carburetor technical data
Automobile Kafer 1200 with manual transmission Kafer 1300 with manual transmission Kafer 1300 with automatic transmission Kafer 1600 with manual transmission Kafer 1600 with...

Carburetor malfunctions and solutions
Malfunction Cause Remedy Cold engine won't start Problems with automatic launch A) vacuum diaphragm does not work Eliminate obstruction or replace the top of the carburetor b)...

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Caddy 3 Beetle