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  #31  
Old 09-14-2012
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Re: Yamaha outboard no water through tell tail

Typically 90w lower gear unit oil. if you look on the side of the leg, just above the prop, you should see two screws. You open the top to allow air to enter as it drains from the bottom. Then you refill by pumping oil into the bottom until you see it at the top. The pump fits onto any 1qt oil container and costs about 10 dollars.




Is there no way you could just fill the oil from the top screw?

Thanks again
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  #32  
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Re: Yamaha outboard no water through tell tail

minnewaska,

Thanks for your reply, is there anyway you could just fill the oil up from the top screw rather than using the pump?

Thanks again
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  #33  
Old 09-14-2012
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Re: Yamaha outboard no water through tell tail

Not impossible, maybe, but air can be trapped indicating it is full when not. Take out both screws, pump from the bottom, when it flows out the top, put the top screw in while holding the pump in place, then remove the pump and replace the bottom screw. Very little oil will be lost while re-installing the bottom screw.

Paul T
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Re: Yamaha outboard no water through tell tail

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Originally Posted by sgjfrods View Post
minnewaska,

Thanks for your reply, is there anyway you could just fill the oil up from the top screw rather than using the pump?

Thanks again
90w oil is very thick and hard to pour into a small hole. As mentioned, it could easily form an air pocket below and make you think you've filled it when you haven't.

Some quart bottles come with a tapered cap, so you can theoretically squeeze it in from below. We've all probably done it when we forgot or lost the pump. It's a real pain. First, it only squeezes well when the quart is full. Second, you'll never fill it on one squeeze, so you'll need to pull it out, put a finger over the hole so it won't leak, allow the bottle to expand, shove it back in and squeeze again.

Do it once and you'll gladly buy the pump. Of course, if you don't get the right amont of oil in there, you'll buy a new lower unit instead.
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  #35  
Old 09-15-2012
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Re: Yamaha outboard no water through tell tail

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Originally Posted by sgjfrods View Post
minnewaska,

Thanks for your reply, is there anyway you could just fill the oil up from the top screw rather than using the pump?

Thanks again
NO! It is just not worth the hassle.

The manual says, on pages 34 and 35, 10W30 or 10W40 engine oil.

Gear oil is hypoid gear oil SAE#90. That is 90 weight.

It says it holds 100cc / 3.38 US oz. / 3.53 Imp oz.

Hypoid oil comes in less than a quart. It comes in a tube like a big tooth paste tube. 10-15 oz or so. It could go bad before you ever use it up! You don't need to buy the pump till you start working on bigger motors.

You cut the tip off the tube and stick it into the lower hole. Pushing it in a little and "screwing" it in a quarter or half turn will help seal it. Slowly squeeze oil into the gear case till it flows out the top hole. While still holding the same pressure on the tube (so as not to relax and let the tube suck the oil back) put in the top screw. Remove tube and insert lower screw.

Once you look closely and have tools and rags ready beside you and do the job you will be amazed at how easy it is.

Trust me. You can do this.

Last edited by therapy23; 09-15-2012 at 04:53 PM.
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  #36  
Old 10-18-2012
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Red face Re: Yamaha outboard no water through tell tail

Ken the obvious was right in front of me and i didnt see it thanks, have changed the gear oil on my 2hp yami but for some reason didnt connect the 100:1 oil mix with engine lubrication
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Phil
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  #37  
Old 10-19-2012
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Re: Yamaha outboard no water through tell tail

Glad I could help.
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  #38  
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Re: Yamaha outboard no water through tell tail

Hi,

I have replaced the impeller.

I have poked wire up the tell tale.

I have had the cooling system blasted with the garden hose, but even with mains pressure running there was still no running water through the tell tale.

I have poked wire up through the pipe running from the water inlet at the bottom to the main box at the top.

None of the above have cured the problem. Has anyone got any ideas?

Any help would be so much appreciated!!
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Re: Yamaha outboard no water through tell tail

Garden hose water pressure alone won't necessarily come out the tell tales. It needs to get past the impeller. I would check to see if something was undone inside the motor. If not, I would suspect the impeller itself is the problem.
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  #40  
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Re: Yamaha outboard no water through tell tail

I removed the impeller housing and flushed directly up the tube that runs up the outboard.... And still no flow.

I'm at a complete loss with this one.

Is there anywhere in the engine compartment which is blocked that may of caused this?

If so where? Thanks very much for any help.
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