Whale Gusher 10 mk2

The Whale Gusher 10 Mk 2 is a heavy-duty, manual marine bilge pump constructed from anodized die-cast alloy. It is highly regarded for its reliability and a high-volume output of up to 17 US gallons (65 liters) per minute. 

Because the Mk 2 and Mk 3 generations share overlapping part numbers, maintaining or rebuilding this pump requires knowing a few specific mechanical details.