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Small Air Cooled Gasoline Engines

Montgomery Ward Engine


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  #1  
Old 02-10-2011, 09:08:17 PM
ronny p 148 ronny p 148 is offline
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Default Montgomery Ward Engine

I thought it was a Clinton i still think it is . It's a model B700AOL Serial # M2096918B Any one 1 1/2 - 2 HP . Anyone know year. I posted it as a Clinton and posted about cleaning carb and getting float bowl gasket. I cleaned carb put it back together and it runs same on full choke only and constant governed Governor just surges and goes to stall I open and close back choke and it will run. I ran for two years good but this year it won't run. I set carb low speed at 1 turn and height 1 1/2 I can adjust all way out almost all way in on high it will stall. What is the problem ? Didn't change float gasket it doesn't leak.

Ronny
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  #2  
Old 02-10-2011, 10:15:09 PM
ronny p 148 ronny p 148 is offline
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Default Montgomery ward post

What happened to my thread ?

Ronny

---------- Post added at 09:08 PM ---------- Previous post was at 09:03 PM ----------

Andrew i found it it's in antique engine discussion . I put it there by mistake can you move it here ?

Ronny

---------- Post added at 09:15 PM ---------- Previous post was at 09:08 PM ----------

Thanks Andrew

Ronny
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  #3  
Old 02-11-2011, 08:57:43 AM
ronny p 148 ronny p 148 is offline
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Default Re: Montgomery Ward Engine

I need help here . I looked for rebuilt kits and theres a black round gasket like a diaphram gasket I can't spell it and theres a kinda square hole in it i know it doesn't go to this carb . Also I have aluminum plates 3 of them with gasket in between them that go between carb flange ears and the head . I don't know what this if for i think keep heat from carb coming from head. .All kits I find don't have enough gaskets that go between carb and head. Mine has 4 gaskets that fit over carb mounting studs and carb. Kits only have 2. But anyway this engine runs same as before I took it apart. By the way didn't use the real strong carb cleaner that eats everything except metal.

Ronny
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  #4  
Old 02-11-2011, 10:33:21 PM
ronny p 148 ronny p 148 is offline
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Default Re: Montgomery Ward Engine

I cleaned carb 2 times I only took float bowl off float off needle adjustments .soaked in spray carb cleaner blowed out with compressed air. Will run but governor surges no adjustment at all on high speed and low. I called bobs small eng repair he will rebuild carb fo $ 80.00 He said engine only worth 25 bucks or so Not really worth it. nice little engine though. the carb is a Carter N 705 s

Ronny

---------- Post added at 09:33 PM ---------- Previous post was at 09:30 PM ----------

By the way it's a model B700AOL serial # M2096918B

Ronny
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Old 02-11-2011, 10:58:57 PM
gvasale gvasale is offline
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Default Re: Montgomery Ward Engine

I have a diaphragm carb, if i didn't forget, I think it was for tecumseh. You have a needle valve which is actuated by the diaphragm. It should have a pin sticking out towards the diaphragm, and if it is too short, its not going to work. The diaphragm needs to be put in the right way too, with most likely a spacer gasket. I love to take things apart, but my note keeping leaves a lot to be disired sometimes.
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Old 02-11-2011, 11:00:26 PM
ronny p 148 ronny p 148 is offline
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Default Re: Montgomery Ward Engine

I think I'm not going to fix this one I don't think I am Knowledgeable enough to tackle it. Hate to spend $80 to rebuild it Cheap enough but not worth it seeing eng is only worth 25 or so dollars.

Ronny
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  #7  
Old 02-12-2011, 08:42:19 AM
ronny p 148 ronny p 148 is offline
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Default Re: Montgomery Ward Engine

Theres no diaphragm in this carb .

Ronny
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  #8  
Old 02-12-2011, 04:03:29 PM
K D Redd K D Redd is offline
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Default Re: Montgomery Ward Engine

Pictures Please!

Kent
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  #9  
Old 02-12-2011, 05:01:13 PM
ronny p 148 ronny p 148 is offline
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Default Re: Montgomery Ward Engine

Some pics not the most clear . No diaphragm needle and seat look good but what do I know . if i send it out to be rebuilt with out engine How can we tell all ports will be clean and engine will run any better or at all ?

Ronny
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  #10  
Old 02-12-2011, 05:04:12 PM
ronny p 148 ronny p 148 is offline
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Default Re: Montgomery Ward Engine

If you notice choke is almost closed. it will run in this position but governor surges I fooled high speed adj and got it to run choke open but still surged .

Ronny
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  #11  
Old 02-12-2011, 05:12:57 PM
gvasale gvasale is offline
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Default Re: Montgomery Ward Engine

somewhere on this board did someone mention tightening the governor spring as a cure for surging? Sorry for being off the mark thinking it was a diaphragm carb.
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  #12  
Old 02-12-2011, 05:16:37 PM
RSCurtis RSCurtis is offline
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Default Re: Montgomery Ward Engine

I wouldn't mess with the governor, it is the symptom, not the cause. Odds are the idle circuit in the carburetor is clogged.
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Old 02-12-2011, 05:25:35 PM
gvasale gvasale is offline
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Default Re: Montgomery Ward Engine

I'm fighting with a similar carb on a 7hp Tecumseh. I has a resilient seat and these were made long before the crap gas we have now. Your carb should have a resilient seat too. I'm also wondering about the float because there is an impression of the back end of the needle valve worn into the adjusting tab.
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Old 02-12-2011, 06:50:24 PM
ronny p 148 ronny p 148 is offline
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Default Re: Montgomery Ward Engine

I really would like to get this eng to run i paid 50 dollars for it from friend he's now past but 80 bucks is not bad if it would run when installed back on eng. Most kits don't include complete rebuild parts only few o rings and needle seat float bowl gasket. no new needles.I see no need to replace seat without new needles. I have same problem as with the partner K 12 saw not enough knowledge to accomplish a rebuild. How do you soak a carb and not destroy it in the process and still get all internal ports clean like the idle port mentioned here.

Ronny

Ronny
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Old 02-12-2011, 07:09:45 PM
gvasale gvasale is offline
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Default Re: Montgomery Ward Engine

I'm pretty sure NAPA has a needle & seat for this carb for about 3 bucks. I'll be heading to my local store next week.

---------- Post added at 06:09 PM ---------- Previous post was at 05:57 PM ----------

looking at the pictures of the carb, it sure looks different than a ton of other small engine carbs, many of which are Walbro.

Pretty sure the ones for the Tecumseh are Walbro. The small engine book I'm looking in is from 1985, and your engine is much older than that.
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Old 02-12-2011, 08:00:14 PM
Bill Sherlock Bill Sherlock is offline
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Default Re: Montgomery Ward Engine

ronny,

I believe most of these carb problems are caused by the ethanol sh*t they try to pass off as gas. Normal carb cleaners don't touch the mineral like deposits left behind, at least not to my experience. You need to spray or soak the carb with something like CLR and use a small bristle brush to work it if heavily coated. You might have to do this several times. Rinse out with water and blow dry with compressed air. Then you can use the regular carb cleaner for follow up for any petroleum based residue.

As far as replacing the high speed and low speed needles, are the tips damaged? If not I wouldn't worry about replacing them. Ditto with the float needle and seat. If the carb doesn't flood out with a full gas tank I would say that the valve is seating adequately.

According to my Clinton parts manual your carburetor is a Carter, Clinton part #4446. I don't know if that would help with finding repair parts or not.

Bill
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  #17  
Old 02-12-2011, 08:31:25 PM
ronny p 148 ronny p 148 is offline
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Default Re: Montgomery Ward Engine

Bill: How do you get the small passages the ones inside that I can't see only been told of clean. I have no adjustment at all the idle speed needle you can close or open it nothing changes. The high speed adjustment you can screw it all way out engine will still run but rough screw it all way in it will stall. What do you suggest ? Any suggestions on the rebuild. You say regular carb cleaner. Isn't the stuff in parts store too strong ? I talked to Bob at Bobs small engine and he more or less said not to use the strong stuff. I'm just really confused on what to do with this carb. Why change needle seats if needles look good ? And soaking carb in cleaner won't it destroy rubber parts I can't get and don't know how to get at with out breaking something ?

Ronny

---------- Post added at 07:31 PM ---------- Previous post was at 07:29 PM ----------

This eng is late 40's early 50's I was told would like to have exact year if anyone knows.

Ronny
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Old 02-12-2011, 09:10:25 PM
Bill Sherlock Bill Sherlock is offline
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Default Re: Montgomery Ward Engine

ronny,

I would strip the carburetor down to every removeable part, excepting the throttle and choke shafts with the butterflys. Then you need to soak everything in CLR, or vinegar if you don't have access to CLR. CLR or vinegar shouldn't damage any rubber or plastic parts. If you don't want to take a chance on the rubber parts, set them aside or just leave them in the solution for a few minutes at a time until any white or greenish residue is gone.

As for the small passages, hopefully the CLR (or vinegar) should eventually disolve any corrosion/mineral buildup and rinse out with clear water and blowing through with compressed air.

I've had to do this on an annual basis for the last 8 years with a carb on a Briggs engine on a community banjo pump used by farmers to fill their water tanks. They just need to check the oil and refill the gas tank. Unfortunately the tank in most cases is filled with ethanol gas, hence the problem.

I found a specification sheet/service manual and parts breakdown for your carburetor but it's too big a file (PDF) to attach here. If you would like me to email them to you, send me your email address via the private message.

Bill
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  #19  
Old 02-17-2011, 01:44:22 PM
ronny p 148 ronny p 148 is offline
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Default Re: Montgomery Ward Engine

Bill : Got a quart of CLR $5.59 not bad do I need to take out the needle seats hate to mess with them don't have the gaskets that go under the seat ?

Ronny
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  #20  
Old 02-19-2011, 10:38:49 AM
ronny p 148 ronny p 148 is offline
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Default Re: Montgomery Ward Engine

Bill's on Vacation and anyone have additional info on using the CLR. I don't want to remove the needle seat don't have kit to replace the gaskets under the seat.

Ronny
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