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  5. 712 .005" Inlet Spring Shim (Pack of 10)
712 .005
712 .005" Inlet Spring Shim (Pack of 10)
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712 .005" Inlet Spring Shim (Pack of 10)

Part Number: 712
Your Price: $3.75
Availability: In Stock.

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.005" Inlet Spring Shims for Diaphragm Carburetors

Inlet spring shims allow micro adjustments to pop-off pressure. Shims are installed under the inlet tension springs to change the spring install height. The change in install height will increase the spring pressure and pop-off pressure of the carburetor. Pop-Off Pressure is not a fuel pressure adjustment but does affect fuel volume primarily at low speeds. Pop-Off Pressure will also affect how easily the engine can cold start. 

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