Make sure you always use a new seat for the replacement purpose and never reuse an old seat. This job can also be performed efficiently using the TecumsehPower tool Float and the inlet needle needs to be reinstalled into the carburetor.
It is also important that the long end on the inlet needle of the clip should be pointing toward the air intake choke side of the carburetor. By carefully placing the detent portion in a direction opposite of the hinge pin the float bowl can be installed. The deepest end of the bowl needs to be placed in a position exactly opposite to the inlet needle. Located in the deepest part there is a dimple in the bowl. The dimple serves the purpose of minimizing the chances of the float that may at times stick to the bottom of the bowl that is mainy caused by stale fuel.
For float removal purpose, using a needle nose pliers carefully grasp the cross piece lying somewhere between the center leg as well as the pivotal point on the float. It is very important to pull out the float straight out in such a manner that it does not break.
While installing the float, into the hinge slot present on the float place the float hinge pin and slowly press into place in the bowl. In order to hold the seat in the place, there may be few types of bowls that may also contain a clip or retaining ring.
This feature may come pre-installed as needed for the manufacturing process. In order to make the process of assembly easy, on the gasket and the bowl an alignment notch is also placed that would guarantee a proper location for the gasket.
All the welch plugs must be removed in order to expose the drilled passages to facilitate proper cleaning. Sharpen to wedge point a small chisel in order to remove the welch plug.
Carefully drive chisel inside the welch plug and then push down on chisel to out of the position. As illustrated, a new welch plug must be installed bell-up. Tap down on to the plug using a punch that is equal or greater than actual size of the plug. Make sure that the dent must not drive to the center of the plug below or to the top surface of the carburetor.
Since the nail polish offers resistance towards the fuel, nail polish can be used to seal the outside edge of the plug with nail polish after installation of the welch plug, in order to ensure that no air would enter the mixing well, as a result leakage of the fuel can be avoided.
For the purpose of identification, you can use different colors so that the work of the previous repair person can easily be identified. Make sure that you install it in the same position as that of the original one. As an integral part of the fitting strainer might be a part of some diaphragm carburetors. Replace the fittings if the strainer is not possible to be cleaned or lacquered. Carefully insert the tip inside the carburetor body while installing a fitting. Using a Loctite grade A coat the exposed portion of the shank and press it in until the shoulders come in contact with the carburetor body.
To successfully remove plastic part of inlet fitting, a plier or vise can efficiently be used. First of all on the air horn of the carburetor, place the choke plate. It is very important that the flat surface must face downwards.
Each carburetor as designed to operate, can operate only in one way, however the choke plates can operate in both directions also. Make sure these choke plates are assembled properly to operate in right direction for your engine.
NOTE: While reinstallation of choke or a throttle shutter, always use a new screw s. Old screw s must never be reused. NOTE: One thing that needs to be taken care of is that the binding must not occur. In case if there is no designation mentioned, then the general sequence of installation is the gasket, diaphragm and cover in the end.
There rings on the emulsion need to be removed while servicing these carburetors. The tube bends a 90o hook in a paper clip or stiff wire to remove. Reach inside the venturi and try to push out the main nozzle emulsion tube as far as possible. Try to Hook the wire inside the air bleeding hole and carefully pull out to remove. To put tension on the tube in order to force it towards the gasket, an emulsion tube spring in the Vector as well as Series 7 carburetor can successfully be used.
This can be efficiently used to seal the tubes thereby to prevent inflow of any unmetered air into the center leg. The proper series can be firstly float bowl then the spring, the tube, gasket and towards end is the carburetor body. The emulson tube can be removed by gently grabbing the tube with a needle nose plier and pulling it out straight. Replace the tube in case if it is distorted or damaged. Occasionally, on the dual system carburetor equipped engines, some rich starting conditions may have occurred at times when the engine is warm.
Using the white plastic spacer this can efficiently be corrected as shown and at the same time inserted in to the center leg of the carburetor. Service To reduce considerably the amount of prime charge into main nozzle area this spacer has been designed for a better starting under the warm engine conditions. One must replace carburetor primer bulbs with care. Hard starting or non-starting problems can be caused on the usage of the wrong primer bulb. Currently, TecumsehPower makes use of four different carburetor mounted primer bulbs.
Use the Master Parts Manual to avoid problems during the correct application. The primer bulbs five in number currently makes use to feature two different shapes; derby and stepped or hourglass and similarly two different venting types; internal as well as external.
In order to force easily a charge of air directly into the bowl through the atmospheric vent chamber stepped primer bulb can efficiently be used. The sealing surfaces as pictured prevent this air from going back into the air filter.
NOTE: A Bowl prime system needs a great gasket seal on the bowl or otherwise a low prime charge might be generated. Caution: While removing retainer, in order to avoid serious eye injuries, it is important to wear safety glasses or goggles. Grasp the bulb with a plier to remove the primer bulb by twisting and pulling it out of the body. The retaining ring must be removed out after after removing the primer bulb.
A screwdriver must be used to carefully pry the retainer out of the body. Old primer bulb or retainer must not be reused. It is necessary to clean the primer passages thoroughly once the primer bulb has been removed.
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