UAZ UAZ-31512, Инструкция по эксплуатации

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Maintenance of the carburettor includes periodic checks and
adjustment of fuel level in the float chamber, adjustment of the
crankshaft slow idling setting, check of the acceleration pump
and economizer for functioning, cleaning, blowing and washing
of the carburettor parts to remove gum residue, capacity checks
of jets.
Check fuel level in the carburettor with the automobile
placed on a level ground and the engine stopped.
The fuel level in the carburettor float chamber should be
within 20-23 mm from joint plane of the float chamber. Adjust
the fuel level by bending lip 3 (Fig. 31). The float should be in
the horizontal position. The valve 5 stroke is adjusted by means
of the lip 2 and should be 1.5 - 2.0 mm.
Slow idling speed of the crankshaft at 700-750 min
-1
is to be
adjusted by means of the screw 1 (Fig. 32) when the engine is
warmed up. The screw 2 is used for adjusting the CO content.
Fig. 30. Fuel Pumps of Á9Â type*:
à -inspection hole
1 - casing; 2 - pull rod; 3 - seal; 4 - washer; 5, 14 -springs; 6 - diaphragm; 7 -
discharge valve; 8 - gauze strainer; 9 - gasket; 10 - cover; 11 - screw; 12 - exhaust
valve; 13 -upper casing; 15 - rocker arm; 16 - camshaft eccentric; 17 - rocker arm
shaft; 18 - hand primer lever shaft; 19 - hand primer lever
* The pumps 2105-1106010-50 or 900-1106010 could be also installed