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Impeller tube length??

ScottyB1970

New member
Hi everyone,
I pulled apart my 1978 Mercury 20HP (Model 200) lower unit and inspected the impeller. I see that most impeller kits come with a 4-6" rubber tube on top of the pump housing. However, my motor has a long 12-15"?? copper tube. Is this just because the motor is a long shaft? Does that long tube need to fit into a boot at the top of the shaft? I ask because when I put it back together there is no water flowing out the tell tail.
Thanks
 
Tube MUST be installed in the midsection FIRST.----Then the lower unit is installed.----A short guide tube is often used to get the copper tube into the pump.
 
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