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dmpilc
Master Marine Consultant

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USA
4593 Posts
Initially Posted - 10/01/2015 :  14:50:53  Show Profile
Has anyone ever had to unclog the cooling water exhaust port (nipple) on one of these motors? It sticks out of the block right behind the line from the gas tank and has a short rubber hose attached to it for the pee stream from the engine. The parts diagram shows the nipple as a separate part, and I can see that it is clogged up, probably the lost impeller key, but I cannot see how to remove the nipple. The motor came with a C22 boat we bought to race. I've already repaired the water pump, but there is no pee stream because of the blockage. I don't want to run the motor more or I'll burn up another impeller, and I am reluctant to try and push the blockage back into the block for fear it would do more damage there.
Fortunately, I have another motor to use on the boat. I've been trying to fix this one just for the educational value and fun of it.
DavidP
1975 C-22 SK #5459 "Shadowfax" Fleet 52
PO of 1984 C-25 SK/TR #4142 "Recess"
Percy Priest Yacht Club, Hamilton Creek Marina, Nashville, TN
Edited by - dmpilc on 10/01/2015 20:21:32

Voyager
Master Marine Consultant

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USA
5429 Posts
Response Posted - 10/02/2015 :  02:24:06  Show Profile
Is the engine listed on boats.net ?
They have exploded views of most popular engines where you should be able to see the parts
Bruce Ross
Passage ~ SR-FK ~ C25 #5032

Port Captain — Milford, CT
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 10/02/2015 :  07:37:33  Show Profile
I've already ordered several parts from then for this motor, impeller & key, gaskets, etc., some of which I hope I can return if not needed. And yes, the parts manual does show the nipple, which I'm probably going to have to also buy. I just can't figure out how to remove the current nipple. There are no flat sides at the base to place a wrench.
DavidP
1975 C-22 SK #5459 "Shadowfax" Fleet 52
PO of 1984 C-25 SK/TR #4142 "Recess"
Percy Priest Yacht Club, Hamilton Creek Marina, Nashville, TN
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Kim Luckner
Navigator

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USA
101 Posts
Response Posted - 10/02/2015 :  12:30:55  Show Profile
Vice Grips, Channel Locks, Pipe Wrench or even an "easy-out" extractor. All should/might work.
Seeadler
'79 C25 SR/FK #1432
Mentor Lagoons
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bigelowp
Master Marine Consultant

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USA
1800 Posts
Response Posted - 10/03/2015 :  19:47:10  Show Profile
You also may want to reach out to Outboard Motors Direct, who offers members a discount, as they sell the Tohatsu made Tohatsu, Nissan and Mercury branded outboards.
Peter Bigelow
PO - C-25 TR/FK #2092 Limerick
Rowayton, Ct
Port Captain: Rowayton/Norwalk/Darien CT
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islander
Master Marine Consultant

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USA
4029 Posts
Response Posted - 10/04/2015 :  07:50:43  Show Profile
A photo would be nice, Worth a thousand words.
Scott-"IMPULSE"87'C25/SR/WK/Din.#5688
Sailing out of Glen Cove,L.I Sound


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Stinkpotter
Master Marine Consultant

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Djibouti
9089 Posts
Response Posted - 10/04/2015 :  08:18:51  Show Profile
Another resource: Nissan/Tohatsu/Honda outboard forum
Dave Bristle
Association "Port Captain" for Mystic/Stonington CT
PO of 1985 C-25 SR/FK #5032 Passage before going over to the Dark Side (2007-2025); now boatless for the first time since 1970 (on a Sunfish).
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Akenumber
Navigator

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USA
247 Posts
Response Posted - 10/14/2015 :  17:28:51  Show Profile
I might be thinking of something dfferent, but I have used a little compressed air in the past. Usually a few short blasts has worked well for me.
Ken
San Diego
84 C25 SR/FK 4116
The KRAKEN
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 10/14/2015 :  18:09:26  Show Profile
Next week I hope to have some time to get back to the motor. Have had to deal with other matters, including a 5-day trip to Michigan and a little last minute tax work. Will try compressed air again and attempt to force water through the system. I'll try to push the obstruction out enough to grab it with needle nose pliers. If that doesn't work, I'll likely have to do more dis-assembly.
DavidP
1975 C-22 SK #5459 "Shadowfax" Fleet 52
PO of 1984 C-25 SK/TR #4142 "Recess"
Percy Priest Yacht Club, Hamilton Creek Marina, Nashville, TN
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 11/12/2015 :  07:05:40  Show Profile
I got the exhaust port unclogged, but there is still no pee stream. Beyond my skills, I suspect there is a clog in the engine block, so I took it to the shop. Bummer!
DavidP
1975 C-22 SK #5459 "Shadowfax" Fleet 52
PO of 1984 C-25 SK/TR #4142 "Recess"
Percy Priest Yacht Club, Hamilton Creek Marina, Nashville, TN
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bigelowp
Master Marine Consultant

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USA
1800 Posts
Response Posted - 11/12/2015 :  14:13:20  Show Profile
Yes, that has happened on a friend's Tohatsu ( have one too so I payed special interest). Outboard motors.com has the part - easy to remove and use a lube to put back over the fittings.
Peter Bigelow
PO - C-25 TR/FK #2092 Limerick
Rowayton, Ct
Port Captain: Rowayton/Norwalk/Darien CT
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 11/15/2015 :  07:08:02  Show Profile
I tried to pull the water exit port from the block and could not get it to budge. Have to wait and see. Took it to Cumberland Watersports (aka Online Outboards). They are only about 30 miles from my home.
DavidP
1975 C-22 SK #5459 "Shadowfax" Fleet 52
PO of 1984 C-25 SK/TR #4142 "Recess"
Percy Priest Yacht Club, Hamilton Creek Marina, Nashville, TN
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.