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Stock accelerator pump covers permit only a 60% - 70% fuel charge in the pump chamber. Turn the throttle and air trapped in the chamber is compressed disrupting fuel delivery. All the while tuning the squirt means a complicated change of the leak jet. The Result: Hesitation, bog and a tuning headache. The Patented Boyesen Quick Shot 3's triple effect: 1. Completely fills the pump chamber with fuel 2. Eliminates troublesome air and 3. Provides an adjustable leak jet circuit for simple hand tuning. The Result: The ultimate in adjustable fuel injection. Fits All Keihin FCR Carburetors!
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