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The engine continues to idle at high rpm unless I manually close the primary or pretension the accelerator rod in a closed direction as found prior to the carburetor rebuild. Taking the accelerator rod out of the equation the only closing force beyond the overtravel spring is provided by the diaphragm from the accelerator pump linkage. Neither close the primary side fully. The two accelerator pedal return springs provide enough pressure to pull the linkage against the bump stop behind the engine but that's all they appear to be capable of doing. The shop manual describes adjusting pedal height by turning the accelerator rod attached to the carburetor in or out. If I follow these directions I lose the pretension necessary to bring the engine to idle. I must be misinterpreting the shop manual or I'm missing a component? Any clarification will be appreciated.
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