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post #1 of 21 (permalink) Old 08-25-2018, 08:03 PM Thread Starter
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New Acquisition...

I've recently acquired an older Simplicity Sovereign 716 Hydro (not running) that I was hoping to use for tilling the garden and snow blowing. There are a couple of problems with it and I would like to ask for opinions as I know nothing about Simplicity tractors.

So far, I've found that the carb float has been sinking and/or the inlet valve is not seating and it floods the engine. Also, there is spark but it's very weak. So weak in fact that it will not jump the spark plug gap.

I would like to ask if it would be worth the expense and bother to put an old Simplicity tractor like this back into serviceable running condition? Are these tractors hard to find parts for? Are they easy or difficult to work on? It looks like I'd have to do a partial engine tear down just to access the ignition coil.

All opinions are welcome...
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post #2 of 21 (permalink) Old 08-26-2018, 03:06 PM Thread Starter
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Since my initial post, I now have the engine running. I was just a matter of removing-cleaning-replacing the ignition points. Now I have plenty of spark.

The carburetor is still a problem. I removed and disassembled the carb. The float is definitely 'sinking'. The float leaks. I can hear a liquid inside it when I shake it.

The engine I think is a B&S. Can anyone tell me the model of carburetor that is on this engine? If I can't drain or replace the leaky float, I might need to get a new carburetor...
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File Type: jpg Carb 001.jpg (103.6 KB, 2 views)
File Type: jpg Carb 002.jpg (119.2 KB, 2 views)
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File Type: jpg Leaky Float 002.jpg (50.0 KB, 1 views)
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Last edited by Autolite; 08-26-2018 at 03:34 PM.
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post #3 of 21 (permalink) Old 08-27-2018, 01:02 AM
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Good job on getting it back running. There are probably numbers stamped into the cooling shroud around the area of the cylinder head if it is a Briggs.

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post #4 of 21 (permalink) Old 08-27-2018, 07:30 AM
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Nice find! The carb is one you might need the numbers off it if able to see and look them up online. Those carbs are rare to find it seems, I have a similar on my Bolens.


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post #5 of 21 (permalink) Old 08-27-2018, 08:13 AM Thread Starter
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Originally Posted by Mark / Ohio View Post
Good job on getting it back running. There are probably numbers stamped into the cooling shroud around the area of the cylinder head if it is a Briggs.
Okay. Thanks for that. I'll have a look on the cooling shroud. There's nothing else that indicates that it's a B&S engine that I can see...
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post #6 of 21 (permalink) Old 08-27-2018, 08:19 AM Thread Starter
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Nice find! The carb is one you might need the numbers off it if able to see and look them up online. Those carbs are rare to find it seems, I have a similar on my Bolens.
There doesn't seem to be any numbers or anything on the carb. I should get a new float for this carb if I can find one. The original float was full of water (the whole carb was full of water). I drained the float and replaced it. There is a microscopic crack in this float. I imagine that it will start sinking again if I don't replace it with a new one.

Evidently it is indeed a B&S carburetor and they're still available...
http://isavetractors.com/carburetors...n-carburetors/

Last edited by Autolite; 08-27-2018 at 08:51 AM.
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post #7 of 21 (permalink) Old 08-27-2018, 09:37 AM Thread Starter
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Also, I just found out that a new float is also available for this carburetor. Oregon Part Number 49-362...



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post #8 of 21 (permalink) Old 08-27-2018, 06:48 PM
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Your carb is a " large two piece flo-jet".
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post #9 of 21 (permalink) Old 08-27-2018, 08:38 PM Thread Starter
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Your carb is a " large two piece flo-jet".
Yes, thanks. That much I have figured out. I've ordered a new float for the carb also. The leaky float seems to be working okay for now anyway.

The engine on this machine runs very well. However, I've found out today that the hydro-static drive isn't working. There's no power going to the wheels. The clutch engages/disengages fine, but the wheels won't drive. I drained and refilled the hydraulic oil but that made no difference.

This was an 'unknown' when I acquired this tractor. I am not familiar with hydro-static drives or Simplicity tractors.I think that I just might cut my losses and bail on this one...
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post #10 of 21 (permalink) Old 08-27-2018, 08:49 PM
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Quote:
Originally Posted by Autolite View Post
Yes, thanks. That much I have figured out. I've ordered a new float for the carb also. The leaky float seems to be working okay for now anyway.

The engine on this machine runs very well. However, I've found out today that the hydro-static drive isn't working. There's no power going to the wheels. The clutch engages/disengages fine, but the wheels won't drive. I drained and refilled the hydraulic oil but that made no difference.

This was an 'unknown' when I acquired this tractor. I am not familiar with hydro-static drives or Simplicity tractors.I think that I just might cut my losses and bail on this one...


Donít fret yet. Check the hydro release on the trans. We had a similar model and the hydro release stayed engaged when I tried to move it. Had to live and work lever to loosen it.


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John Deere LX172 bagger
John Deere 180 yard tug
1997 John Deere 345
1967 Sears Suburban SS10
1971 Bolens 1256
Craftsman 9HP snow blower
Honda HRB215SDA mower
Change is the normal with my tractor list!
John 3:16 Psalm 28:7 1 Corinthians 15:57
"Complain and remain, praise and be raised! "

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