Is this pump incorrectly connected?

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exp2000

Petty Officer 2nd Class
Joined
Dec 10, 2009
Messages
148
Ok, so I am looking at the way the pump was connected to the engine and the diagrams from the book, as well as markings on the pump and this does not add up. Something is incorrect. Take a look how "IN" line is connected to the "OUT" but there is no way to connect the pump other way around. Also "OUT" has to be lower than "IN" yet the markings are wrong, and the pulse connection is down, not up. What is going on here? And filter seem to be pointed to the wrong direction.

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Frank Acampora

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Re: Is this pump incorrectly connected?

Your photos don't show enough. However, the filter should be on the outlet side, between the pump and carb and fuel flow should be in that direction through the filter. SO: if the fuel supply hose is connected to the top of the filter, just change it to the inlet nipple and connect the carb line to the filter.

The pump and diaphragms have points cast into them to show correct orientation. You also need to check behind the pump to be certain that the impulse hole is correctly aligned with the hole in the bypass cover.
 
E

exp2000

Petty Officer 2nd Class
Joined
Dec 10, 2009
Messages
148
Re: Is this pump incorrectly connected?

Ah ok, filter goes in between pump and the carb, not before the pump. So hoses were switched than. I am confused why first image shows outlet on the right, and lower than "IN" side. Maybe it was incorrectly oriented in the book?
 
P

pnwboat

Rear Admiral
Joined
Oct 8, 2007
Messages
4,251
Re: Is this pump incorrectly connected?

The pump on my motor is mounted exactly the same as yours. The picture in the manual is upside down compared to the way my pump is mounted.
 
E

exp2000

Petty Officer 2nd Class
Joined
Dec 10, 2009
Messages
148
Re: Is this pump incorrectly connected?

Thank you guys, I switched the hoses and it works fine now.
 
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