Demon 625 Street Demon Carburetor 1900 Instruction Manual
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Contents
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5WARNING: In all cases where the fuel line has been cut, it is essential that it be clean to ensure that no metalparticles enter the fuel bowl after the new carburetor installation. Remove the fuel line at thepump and blow the line clean with compressed air. DO NOT use the procedure where the coilwire is disconnected, the engine cranked for a few revolutions, and the fuel collected in acontainer. This procedure is unsafe because sparking can occur either at the coil or at thedistributor end of the coil wire and ignite any fuel spilled in the engine compartment.MAINTENANCE WARNING: Fuel system components, including fuel lines and the carburetor, should beinspected periodically to assure no fuel leakage and to ensure the soundness of the hoses. Today’s cleanemissions engines provide higher temperatures in the engine compartment. These high temperatures promotefaster aging of non-metallic materials.Hoses that exhibit surface cracks, when bent to 180°, should be replaced. The presence of liquid fuel demandstightening of fittings, hose replacement, and re-torquing of the fuel system component flange nuts.Connecting the Throttle LinkageNOTE: Before connecting the linkage, operate the throttle lever to assure the correct travel (no sticking orbinding), by opening to wide-open throttle and back to closed throttle several times. Correct anysticking or binding conditions before proceeding.NOTE: If installing on a GM vehicle where the throttle cable needs to utilize the large hole in the top of thethrottle lever, a part # 1952 GM throttle linkage cable attachment bracket will be needed.With the pedal held firmly against a stop or the floorboard, pull the carburetor to its wide open position. Adjust the linkagerod or cable to the proper length, and then attach it to the baseplate linkage. Remember, the pedal should make contactwith a positive stop, just as the carburetor gets to wide open throttle. With the linkage rod or cable attached to thebaseplate, make sure the carburetor can return to its curb idle position. Install your return spring(s) to the bottom of thethrottle lever as shown in Figure 2, and check again for smooth operation to wide open throttle, and then closed again.Figure 2Connecting the Transmission LinkageGM TH350, 200R4 /700R4Attach the transmission kickdown stud (supplied) into the proper hole location on the throttle lever as seen in (Fig. 2).Attach the TV cable to the stud and adjust per transmission manufacturer’s specifications, using Chilton®, Motor®, orother repair manual designed for your specific transmission.WARNING: If you are unfamiliar with overdrive transmission TV cable adjustments, consult a qualifiedtransmission expert. Failure to properly adjust the TV cable on overdrive transmissions can leadto poor shifting and / or transmission failure. Demon Carburetion assumes no responsibility fortransmission damage or failure caused by improperly adjusted TV cables. |
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