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Nissan 5 HP 4 stroke

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dmgolub

New member
I got a deal on a 5HP Nissan NSF5A2. I just ordered a water flushing attachment hose connector from Boats.net, and need to know where this attachment fits. There are 5 or 6 bolts near where the motor pees water. Which one is for the water connection? Thanks.
 
That info is listed in the Factory service manual, available from any dealer.
Part #: 003-21034-2
List Price (MSRP): $41.67

There is only one 8mm plug on the underside of the motor. Item 24 in this diagram:
002-21046-3_FIG04.jpg
 
Incidentally, the MFS 4/5/6 are all the same except for the carburetor. You can add 20% power by installing a 6 hp carb.
 
The owners manual says to run the motor at idle speed while being flushed through the water inlet, but guys at the ramp think that would burn the water pump/impeller. Run the motor or not?
 
If you are in salt, it should be flushed. Using garden hose pressure fills the water pump (in fact, some water will come out the water inlet), so idling while flushing is fine. I bet the ramp boys believe in voo doo, too.
 
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