TM 5-4240-501-14&PIdling Device and Throttle Control(Two Piece Flo-Jet)A manual friction control may be used to limit throttlemovement, to any pre-set position. It is commonly usedfor two purposes. 1. To return the throttle to a "no-load"position on a pump, generator, etc.; 2. For cold weatherstarting on governed idle engines. The throttle can easilybe kept in a "near closed" position, while starting, whichis most favorable for cold weather starts. Fig. 97.Fig. 97 - Idling Device and Throttle ControlRemote Throttle Control(Two Piece Flo-Jet)The remote throttle control opens the carburetor throttleuntil the full governed speed is obtained, at which pointthe governor takes over control of the throttle. At anypoint below the governed speed, the throttle is held in afixed position and the engine speed will vary with theload. Fig. 98.Fig. 98 - Remote Throttle ControlCARBURETIONCross-Over Flo-JetCROSS-OVER FLO-JETThe cross-over Flo-Jet carburetor is used on ModelSeries 253400 engines and is a float type carburetor withidle and high speed adjustment needles. This carburetoralso has an integral fuel pump. All adjustments can bemade from the top of the carburetor, Figs. 99 and 100.Fig. 99Fig. 100Disassembly, Cross-Over FIo-JetRemove idle and high speed needle adjustment valves.Remove float bowl mounting screw, washer and floatbowl. Using a large blunt screw driver, remove nozzlescrew. Remove float hinge pin, float and float inletneedle. Use screw driver to remove two (2) screws fromchoke shaft. Then remove choke plate and choke shaft.Use screw driver to remove screw from throttle shaft.Then remove throttle plate and throttle shaft. Use screwdriver to remove three (3) screws from fuel pump body.Remove fuel pump from carburetor taking care not tolose the pump valve springs.27
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
