Alfa Romeo 33 owners manual page 77

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. Accelerator pump adjustment @ : Tightening Torque 2. Throttle valve opening (gas To check and adjust accelerator valve) with volet inserted. Carburetor retaining nuts pump refer to: Weber TwinCarbure- To adjust throttle valve@ opening 19 + 23.5Narn tor: Checks and Inspections- Accel- proceed as folltiws: (1.9 f 2.4 kg-m erator Pump). 13.74 + 17.35ft.lb) (1) Fully engage choke as shown in figure. Volume of petrol“VS” correspond- OVERHAULING (2) Insert a gauged wire between ing to 20 strokes of pump control throttle valve edge and the first body Carburetor should be overhauled lever: duct making sure dimension“GS2” only if encountered defects cannot is within specified value. be corrected neither through opera- “GQ” Dimension Twin carburetor SolexC32 EIES 45 tions. described in Checks and Inspec- 1st. barrelcm3 tions above nor through cleaning of 0.9 + 1 mm (0.035+ 0.039 in) 8+ 10 (in) (0.49 + 0.61) fuel filter, float chamber or jets. 2nd barrelcm3 s+ 10 When overhauling, keep following (in) (0.49-e 0.61) items in mind: Total cm3 16+20 a. Remove carburetor from engine (in) (0.97 + 1.22) and disassemble it on bench. Twin carburetor Solex C32EIES 44 1st barrelcm3 8+ 10 All disassembled parts must be (in) (0.49 + 0.61) thoroughly cleaned. 2nd barrelcm3 9+11 (in) (0.55 + 0.67) b. Thoroughly and carefully check Total cm3 17,: 21 most delicate parts such as (in) (1.04 + 1.28) needle valve, throttlevalve Twin carburetor Solex C32EIES 43 shafts, diaphragms, accelerator 1st barrelcm3 8+10 pump and fuel filter. (in) (0.49 + 0.61) C. Replace defective parts only 2nd barrelcm3 with original ones and always 10+12 replace a I I gaskets. (in) (0.61 + 0.77) d. Use special care in cleaning jets Total cm’ 18+22 so as not to damage relevant 1 Throttle valve (in) (1.10+1.34) ratings; if possible blow them 2 Starting control lever with a jet of compressed air. (3) If“GS2” Fit carburetor back to engine (refer dimension is not to Group 01- Engine Assembly - within specified valve loose nut and CAUTION: Engine Unit) tightening relevant. operate on control lever adjustment Once carburetor has been over- screw of throttle valve (see nextnuts according to specified torque hauled, it is advisable to perform figure) . and performing idle adjustment (re- adjustments described in preceding fer to: Group 00- Engine Mainte- (4) Having completed adjusting op- paragraph “Checks and Inspections”. erations, tighten the nut. nance). ACCELERATOR CABLE ADJUSTMENT 3. If required, adjust as follows: 1. Verify that throttle valve control (1) Loosen adjusting screw@ ’s cable can freely slide inside sheath. lock nut 0. 2. Verify that clearance between @ till specified (2) Turn screw clevis slot@ and pin @ on clearance is reached. carburetor throttle valve opening shaft is within specifiedG1 limit. (3) Tighten,lock nut. Clevis slot to pin clearance CAUTION: To easy adjustment buck action of G, = 1 mm (0.039 in) return spring by manually partially 3 Pin opening the throttle valve. 1 Adjusting screw 4 Clevis 2 Lock nut May 1983 04-12

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