This is a genuine OEM approved replacement part, it is specially designed for use with Craftsman gas powered lawn and garden equipment. By pressing on the purge bulb, it will force fuel into the fuel line from the fuel tank into the carburetor. Once the carburetor is full of fuel, the excess fuel will be purged back into the tank in the fuel return line. Over time the material may begin to deteriorate and crack eventually requiring replacement. It is a high-quality assembly which consists of a durable rubber primer bulb with a flexible hose and it is sold individually.
This is an OEM replacement part,it is sold individually. The Bumper Head Knob is the part of the trimmer that when struck on the ground, advances the trimmer line in the spool.
To remove the Bumper Head Knob, thread it off the spindle of the gear box assembly.
This is an authentic manufacturer sourced replacement cotter pin. It is a standard hardware commonly used on a variety of Craftsman lawn and garden equipment. Depending on the model of your equipment it will be used in different locations to secure two parts together. Please make sure to check appropriate diagrams for correct application for this part. This metal cotter pin is sold individually. It is best to use pliers to remove or install this part.
A carburetor basically consists of an open pipe through which the air passes into the inlet manifold of the engine. The pipe is in the form of a Venturi: it narrows in section and then widens again, causing the airflow to increase in speed in the narrowest part. Below the Venturi is a butterfly valve called the throttle valve — a rotating disc that can be turned end-on to the airflow, so as to hardly restrict the flow at all, or can be rotated so that it (almost) completely blocks the flow of air. This valve controls the flow of air through the carburetor throat and thus the quantity of air/fuel mixture the system will deliver, thereby regulating engine power and speed. The throttle is connected, usually through a cable or a mechanical linkage of rods and joints.
Fuel is introduced into the air stream through small holes at the narrowest part of the Venturi and at other places where pressure will be lowered when not running on full throttle.
This is a genuine OEM replacement part, it is sold individually. The purpose of the 738-04124A Shear Pin is to protect your snowblower. If the auger gets jammed or clogged, the Shear Pin is designed to snap at a certain point of pressure, so it will not damage any other part of the unit.
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