Solex 4A-1 carburetor — design description The Solex carburetor is a dual barrel carburetor that consists of 4 main parts connected by screws to each other: carburetor cover, carburetor body, throttle bodies and...
Idle speed and CO content adjustment Warm up the engine, then turn it off, oil temperature is 75-85°C. Switch off the air conditioner, on the automatic transmission set the lever to the position "R". Switch...
Checking the idle shut-off valves Two idle shut-off valves close the idle channels when the ignition is switched off and thus prevent further engine operation. The valves remain closed until they are...
Air filter — removal and installation Removing Remove rubber tube (2) from the inlet fitting of the carburetor, after loosening the clamp. Unscrew the 3 fixing nuts for the air filter cover (10). Remove the...
Changing the air filter element The air filter element must be replaced every 60,000 km. When operating in dusty areas, replacement should be carried out more frequently. Remove air filter cover. Take...
Checking the vacuum regulator Whenever the engine is loaded more at idle and the speed drops, for example when shifting into gear or connecting the air conditioner, the vacuum regulator ensures that...
Air Piston Damper Oil Level Check Warm up the engine to operating temperature. Oil temperature -70-80°C. Unscrew the cap screw and remove together with the air piston damper. The oil level must reach the...
Tempomat adjustment Start the engine and leave at idle. Unhook the adjusting rod (21) lever, then push the lever clockwise to the idle position. Adjust the adjusting rod so that the round...
Checking the idle shutoff valve Attention: Depending on the version of the carburetor, 2 idle shutoff valves with different functions are installed. The idle shutoff valve shuts off the fuel supply to...
Checking the earth connection on the carburetor Connect a test lamp between the carburetor and the positive pole of the battery. If the lamp lights up, and the idle shutoff valve does not turn off despite the flow of...
Idle Shutoff Valve Relay Test Start the engine and let it idle. Connect a voltmeter between the removed idle valve plug and ground. Switch off the ignition. The instrument should now show the battery...
Idle shutoff valve — removal and installation Attention: Depending on the version of the carburetor, 2 different idle code shut-off valves are installed. Whereas on the CDT carburetor from 07.80 the shut-off valve...
Thermal Delay Valve / Pull-down Valve Check A cold engine receives a particularly rich hot mixture at start-up, making it easier to start. When the engine is running, the pull-down device closes the enrichment...
Automatic start device — removal and installation Removing With a warm engine, reduce excess pressure in the cooling system. Open the coolant hose on the cover of the starter, loosen the clamp and slide it back, then...
Fuel tank — general information The fuel exits the tank through a filter that is connected with a drain bolt. The pipes and filler neck in the fuel tank are used to inlet and outlet air into the fuel...
Fuel pump — check 1. Round gasket. 2. Filter. 3. Cover. 4. O-ring. Carburetor engines The fuel pump is driven by a pushrod through a cam on the oil pump drive shaft. Individual parts of...
Fuel pump — removal and installation Removing Caution: Avoid open flames, flammable! Inlet and outlet hoses (1) And (2) clamp with clamps. If there are no suitable clamps, then after removing the hoses,...
Carburetor Troubleshooting If there is a problem with the fuel supply, the system must be checked in the following sequence: Check if there is fuel in the tank. Remove the fuel hose between the...
Engine Power System Specifications Engine Power System Specifications Note: A removed pressure plate must never be actuated with a press or the like, as after a pressure ring stroke of more than 11 mm,...