Alfa Romeo 33 owners manual page 73

text version of content this owner's manual page from owners manual to the vehicle Alfa Romeo 33, year of production 1983 - 1995:

FUEL SYSTEM (3) In case the verified dimension (3) If“GW2” dimension is not “GW,” is not within specified value, within specifiedvalue,.loosen the nut remove cap and operate on traveland operate on control lever adjust- adjustment ment screw of throttle valve (see screw of economiser diaphragm (see following figure).next figure). (4) At the end of adjustment (4) Having completed adjusting op- operation, refit cap0. erations, tighten the nut. 1 Petrol delivery 2 Connecting hose Pipe 3 Cam Remove carburetor from car in oder to. carry out the following checks (refer to: Group 01 Engine Disas- 1 Nut sembly - Engine Unit). 2 Economiser body 1. Choke opening (air valve) by1 Cap economiser 3. Accelerator pump adjustment choke 0 opening To adjust Adjust accelerator pump as follows: proceed as follows: 2. Throttle valve opening (gas (1) Secure carburetor to support valve) with choke inserted. (1) Fully engage choke by moving C.4.0103 (fitted with gasket) of the starting control lever@ as shown in To adjust throttle valve@ opening pump test instrumentC.4.0101. proceed as follows: relevant figure and at the same time (2) Supply the carburetor with (1) Fully engage choke by moving the economiser control act on petrol by connecting it to the tool’s starting control lever@ as shown in lever pushing it all theway back. reservoir. relevant figure. (2) Insert gauged point between (3) Set the graduated measuring (2)-- Insert a gauged wire between choke edge and duct making sure tubes C.4.0105 under the foreseen throttle valve edge and first body dimension “GWl ” is within specified exhaust pipe -on support itself. value. duct making sure dimension“G,,,,2” (4) Carry out twenty strokes corre- is within specified value. sponding to as many complete “GW,” Dimension openings and closings of throttle 5.5 + 6.5mm (0216 + 0.256 in) “GW2” Dimension valve, operating on control lever0. 0.9 + 1 mm (0.035+ 0.039 in) (5) Check if volume of petrol collected in the measuring tube corresponds to specified “VW” value. When pumping, briefly stop bothin throttle valve fully open and fully closed positions. Volume of petrol“VW” correspond- ing to 20 strokes of pump control lever: “VW” = 17 + 20 -cm3 (1.03 f 1.22cu.inJ (6) If “VW” value is not within specified limit, check diaphragm of acceleration pump and the pump jet. 1 Ckoke air valve 1 Throttle valve 2 Srarting confrol lever 2 Ckoke control lever May 1983 04-6

owners manual Alfa Romeo 33

owners manual Alfa Romeo 33 - year of production: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 - Alfa Romeo 33 owners manual EN