2005 SO Johnson 4 Stroke 9.9-15HP Outboards Service Repair Manual P/N 5005990, Page 109Get this manual

2005 SO Johnson 4 Stroke 9.9-15HP Outboards Service Repair Manual P/N 5005990, Page 109

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FUEL SYSTEM CARBURETOR OPERATION
Operation of acceleration pump
When the throttle lever is opened quiekly, the aeeelerator pump lever moves in the direetion indieated the arow with spring