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Old 19-09-2010, 16:41   #1
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How Do I Reassemble Lower Unit on Outboard ?

I took apart the lower unit for the first time today in order to change the water pump impeller and also clean out all the dirt. It was easy to dissassemble, but I can't seem to fit back into place. There are two rods that need to fit in. The main shaft which runs through the water pump and down to the propeller. That one seems to fit fine. But then there is the rod that run up to the gear shift. It moves up and down as you select forward, neutral, and reverse. Reverse is the gear that pushes it furthest down. In the picture it has a funny shaped cylinder on the end--this one doesn't fit no matter how hard I press. What is the trick? See the photos below. It is an 8hp Nissan marine 4-stroke engine.


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Old 19-09-2010, 20:49   #2
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The beveled end goes towards the shaft I believe.

Look at the pin holes in the other shaft and that will tell you.

If it is not in correctly, it won't match up.

Do you have the manual?

It may be available on the CF site. (online manuals)
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Old 19-09-2010, 21:09   #3
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Yes, I have the Nissan service manual. It is very poorly written and doesn't explain how to reassemble it. I didn't understand what you said about the pin holes. The cylinder with the multiple bevels has to get inserted into the lower unit on the side opposite to the propeller. There is hole there for it but the cylinder doesn't fit all the way in. There are no pinholes or anything else in or near that hole. Maybe if I removed the propeller I could see more but there doesn't seem to be anything to adjust. The beveled cylinder does not spin at all because of the spring pin holding it on the rod.
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Old 19-09-2010, 22:19   #4
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there are two holes in the connector on the upper part of the rod.

When the rod is inserted correctly you will be able to spin the prop in one direction and not the other.

It is kind of a "feel" thing.

Taking the prop off won't help.
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