0301hpp Triresto15 Zoom
. . . A screwdriver is showing the arm in a position that sends vacuum to a diaphragm that holds the secondary carbs closed. The next photo shows that when that arm comes down, it cuts off the vacuum to the spring-over-vacuum secondaries actuating diaphragm, allowing the spring in the vacuum diaphragm to open the secondary carbs. Jim will convert this system over to actuate the secondary carbs mechanically. He will also have to change the accelerator pump arm to a mechanical-type arm and then attach the mechanical linkage.
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