Adjusting the "fast" idle

Pierburg 2E3 carburetor

■ Connect the tachometer.

■ Measure the CO concentration and idling speed of the engine warmed up to operating temperature (oil temperature 60 .. 80 C).

■ Remove the air filter.

■ Stop the engine.

■ Adjustment screw (with a white cap) set to the second step of the stepped disc.

■ Start the engine, without touching the pedal “gas”.

■ The "fast" idle speed should be 2100 ..2500 rpm (2400.. 2800 rpm with automatic gearbox). In order to correct it, turn the adjusting screw accordingly.

Weber carburetor 32 TSP

■ The engine must be adjusted to idle speed.

■ Remove the air filter.

■ Pull out the choke control completely”. The choke lever must then rest against the bumper; if necessary, adjust the active length of the choke cable”.

■ Start the engine.

■ Pulling on the cable, open the start throttle as far as it will go.

■ ..fast idle speed should be 3600…4000 rpm. Otherwise, the adjusting rod for the throttle valve setting must be turned accordingly (located under the cam disc). Re-lock the screw after adjustment.

Work with the carburetor removed

■ Turn the choke lever as far as it will go, which must close.

■ Measure the throttle gap opposite the idle mix outlet channel. For measuring the gap, which should be 0.60…0.70 Mm. use a suitable drill bit.

■ Possible gap correction with adjusting screw.