Wards 3.5 Seaking Clinton

[Dexta]

Got a Wards Seaking with a 3.5 Clinton engine. I have to guess it is a mid seventies. It's an air cooled job with exhaust through the water. I've been reading some the posts about fuel oil mix and I'm just trying to do the right thing. Right on the engine cowl it reads fuel oil mix 50:1, yet I see posts advising 16 24 or 40 to one. Took it out the other day and she runs like a top using the 50 mix. I used regular two cycle oil as I heard the TCW 3 stuff is for water jobs.

Can anyone straighten me out here?

Also looking for a manual.

Model CED 50504B

28X-2955203



Ron

Dexta

 

[Tom @ Buzzard Bluff]

Re: Wards 3.5 Seaking Clinton

<I've been reading some the posts about fuel oil mix and I'm just trying to do the right thing. Right on the engine cowl it reads fuel oil mix 50:1, yet I see posts advising 16 24 or 40 to one. Took it out the other day and she runs like a top using the 50 mix.>


Are you 100% certain that it has the original cowl on it? If your honest answer to that is "No" then running 50/1 hardly amounts to "the right thing'. Until you can pin it down exactly 24/1 would be the course of caution. They'll ALL run great on 50/1-----until they wear out prematurely or fail catastrophically.

I couldn't find the #s you listed either on the Brix Ent. website or in my Intertec manuals. The Sea King link was dead on Brix and the manuals simply had nothing resembling them.

 

[Dexta]

Re: Wards 3.5 Seaking Clinton

Tom,

Thanks for your reply. Got to be the original cowl - everything fits nicely, exterior decals in good shape and no evidence of cobbling anywhere. Further to the mix instructions they say use a " BIA oil (3 oz to gal)".

Can't find any identical images on my searches excepting one for a seven horse that has similar styling and decals that was posted as being a mid to upper seventies job.

Any other information or advice is appreciated because as I stated before it runs so good that I want it to be around for a long time.

Thanks

Ron

 

[Tom @ Buzzard Bluff]

Re: Wards 3.5 Seaking Clinton

<Model CED 505048

28X-2955203>

Just spotted a one year only '81 Sea King 3 1/2 HP in my Intertec manual with 52003 as the model #. That's awfully close to the last 4 digits in the quote above---easily close enough to be transcribed wrong by a copy writer or misread from a dirty data plate in bad light.;o) Take a look at your data plate again.

<---the mix instructions--say use a " BIA oil (3 oz to gal)".>

'BIA oil' would be the TCW series, currently in the 3rd iteration as TCW-3. The fuel/oil mix for the Mod# 52003 I mentioned above was "1/6th pint per gallon'.
So it appears that 50/1 using TCW-3 was the recommended mix.

That said you insisted you'd like to keep it healthy into an extended old age so I must observe that I've NEVER seen a 2 stroke engine ruined by too MUCH oil but the reverse is NOT true!
So "let your conscience be your guide". But I'd feed it a steady diet of 32/1 and expect it to outlast me!;o) Tom

 

[Dexta]

Re: Wards 3.5 Seaking Clinton

Tom,

Thanks so much for your help and information. I checked the plate again and the the charactors are clear, however the last one of the model # was a "B" not an eight.

I'm going to post some pictures to see if that stirs anyones memory banks.


Ron

 

[Dexta]

Re: Wards 3.5 Seaking Clinton

Gee guess it isn't Clinton after all. Wasn't getting spark and had to pull the flywheel. Right there in in front of me was the old familar Tecumseh.

Got some pictures too.

 

[mrcrabs]

Re: Wards 3.5 Seaking Clinton

look for the engine model tag attached to the reed box. If you got that we can tell you what oil ratio you should run...heck I may even go into a ditribe about how and why things changed concerning oil ratios...then again maybe not

 

[Tom @ Buzzard Bluff]

Re: Wards 3.5 Seaking Clinton

Gee guess it isn't Clinton after all. Wasn't getting spark and had to pull the flywheel. Right there in in front of me was the old familar Tecumseh.

Depending on my memory is like playing Russian Roulette with only one empty chamber but IIRC some of the last Clinton outboards actually used Tecumseh engines. But as mrcrabs pointed out it should have the familiar Tecumseh tag on it if a Tecumseh product no matter who bolted it on an outboard leg.

Using it on a side-mount puts you in a great position to easily monitor the coolant output. Bear in mind that coolant flow to that lower bearing and seal inside the exhaust collector is 'only critical' to the life of the engine!

 

[Dexta]

Re: Wards 3.5 Seaking Clinton (Not Clinton - Tecumseh)

Re: Wards 3.5 Seaking Clinton (Not Clinton - Tecumseh)

Don't see any markings on the reed box. It's vertically mounted and air cooled.

I'm going to post some pictures of it with the cowl off so that somebody can help me with the ratios.

 

[Tom @ Buzzard Bluff]

Re: Wards 3.5 Seaking Clinton (Not Clinton - Tecumseh)

Re: Wards 3.5 Seaking Clinton (Not Clinton - Tecumseh)

Don't see any markings on the reed box. It's vertically mounted and air cooled.

The Top end (cylinder & head) is air-cooled. The lower bearing and seal is water-cooled whether by actual waterpump or ram tube. From thread below:
'Does anyone know what motor this is'?

<You should also be aware that the primary purpose of the waterpump on the air-cooled motors is to keep the critical lower bearing and seal cool. Due to the basic design required by converting the Clinton & Tecumseh engines to marine use the bottom part of the crankcase that contains the lower bearing and seal serves as the exhaust collector. Without the cooling effect of the water the seal would soon fail followed shortly thereafter by the bearing.>

<The 'ram tube' that FR referred to is a method of getting cooling water to the critical area. It consists of a 5/16" tube with a 180 degree bend in the end of it that protrudes from the exhaust outlet in a position that forward motion of the boat in combination with propwash forces water up the tube when underway. They work very well as designed but insects just LOVE to build nests in them so they must be checked for operation every time you use them. They were used mainly on the smaller engines (3 1/2 or less) having been tried on larger motors and---presumably---been found wanting.
Motors so equipped shouldn't be run in a testank---only on a boat underway.>

 

[Dexta]

Re: Wards 3.5 Seaking Clinton

Tom, thanks for the valuable information. Never knew that about the cooling of the lower unit. Guess another trip out to the garage to do some more sleuthing. Find some pictures attached.

 

[Dexta]

Re: Wards 3.5 Seaking Clinton

And some more pictues.

 

[Tom @ Buzzard Bluff]

Re: Wards 3.5 Seaking Clinton

And some more pictues.

Good pics. Glad to see all of the cylinder shrouding still in place. A lot of people dispensed with the lower shrouds and they are needed to cool as designed. Wish you'd included a pic of the exhaust outlet to see if it uses a ram tube. If it doesn't you'll find the waterpump sitting on top of the anti-cavitation plate when you drop the L/U.

 

[mrcrabs]

Re: Wards 3.5 Seaking Clinton

I recognize the leg components, same as my 77 eska so I would bet on a water pump. The engine however is AV 600 block with a aluminium rod with 31 needles, so yeah its a 50:1 motor. Alot of internal parts are NLA for that block so take good care of it and if nothing else use no less than 40:1 mix.

http://www.partstree.com/parts/?lc=tecumseh&mn=AV600-643-01&dn=1031EN1031643-01-EN

 

[Dexta]

Re: Wards 3.5 Seaking Clinton

Thanks for your replies and advise fellas, I missed putting the LU photo on so here it is.

 

[mrcrabs]

Re: Wards 3.5 Seaking Clinton

I'm wrong again...not exactly like my eska. I guess Eska had to make some defining deferences between sears and monkey wards to keep people from switching parts between the two...definitly has a water pump,you can tell because of the 3 water inlet ports but my question is whats behind the little inspection plate on the lower leg? normally that would be for the shift rod but no way is there a shiftable gear in the foot of that 3.5

 

[Dexta]

Re: Wards 3.5 Seaking Clinton

Krabs,

Funny I was wondering about that inspection plate too, thinking it was for alignment of a driveshaft or other. Took it off and ??? nothing in the immediate area. The driveshaft is too far off to the side for it to be of any help. I guess it was part of standardization. Doing research this morning I found a Sears Gamefisher 3.5 on Ebay that was very similar to my unit.

Finally I have determined it to be an Eska made for Wards. Found out they made 'em for Wards from '69 - '83.

Guess it does have a waterpump. What's the best way to break it down to check the impeller?

 

[Sea King Rob]

Re: Wards 3.5 Seaking Clinton

I know this is a late post but just posting for anyone doing any additional research for their old Sea King.No water pump, it uses a siphon type cooling tube to cool the lower bearing and seal. I have the same motor maybe a year or two younger or older right on the cowling/housing is says as far as the mixture goes(Use 1/2 pint of TC-W per gallon of fuel).

 

[mrcrabs]

Re: Wards 3.5 Seaking Clinton

3.5

 

[THE BESTEVER]

Re: Wards 3.5 Seaking Clinton

I always run 16 to 1 but some times and a little extra