Place the snowblower on a flat surface. Remove plastic trim pieces from the engine housing. Some models have trim plates around the primer bulb and key areas. These plates are held on with nuts on either side. Once this plate is removed, it will be easier to remove the other pieces. The slot for the choke knob is smaller than the knob itself, so that piece cannot be removed fully until the knob is removed.
Follow the arm of the choke knob back to the carburetor once the housing is out of the way. The choke is connected by a linkage to the carburetor.
Disconnect the choke knob arm from the carburetor linkage using the screwdriver. Once the arm is disconnected from the carburetor, slide it out through the opening in the housing.
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