Carburetor Installation - Husqvarna 50 Workshop Manual

Carburetor Installation

Check the fuel pump pulse passage in the intake
manifold to ensure that it is open and clean.
Check the pulse passage seal and rubber intake tube on
the cylinder. Exchange the seal and tube if the material
has hardened or is damaged.
Apply a very thin coat of grease around the tip of the
pulse passage tube on the manifold and install the
manifold.