Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  
rockfangd

Simplicity 4211 Wont Run

Recommended Posts

rockfangd

Hi All.

Just before winter I acquired a simplicity 4000 series tractor. with a briggs 11hp engine

I put my 36" snowblower attachment on it. 

The original engine would not run so the previous owner swapped it out for a 13.5 hp Briggs which ran good.

He was mowing with it and the brake locked up at the transmission and long story short ended up with a hole in the block.

He was done with it so I took it over.

I reinstalled the original engine. Rebuilt the Carbeurator, It was pretty bad in the bowl.

I was able to get it running a few times but not enough to even be able to drive it far. It would cut right off like someone shut the key off. 

Last week I pulled the coil and found it has the points and condenser system. It was all rusted. So I decided to try swapping to the 13.5s coil. (bolted on but not sure if it is compatible), sanded the flywheel up nicely. I wanted to pull the plug but of course I grabbed the wrong size socket

When the engine cranks over it starts to drip fuel from the overflow on the carbeurator. It will not fire on aid either.

I intend to get my spark checker to find out for sure but I don't get much free time between jobs.

I am curious how I could find the correct conversion coil to do away with the points system as I have a feeling they are shot.

And what might the spark plug be? The one currently installed is likely contaminated if it has not been firing and may still not fire with the replacement coil until I clean it, but would just rather replace it.

I would like to try this tractor before winter is over if I can. I will say that when I heard it run that it seemed to run good once it got past the cold start.

Any insight is highly appreciated. Thanks all

Share this post


Link to post
Share on other sites
dhoadley

I'd get a Nova II module to replace the points and condenser. Cheap and simple, then see about spark. If still no spark, then coil. That's how I'd go at it, But I really don"t know what I'm doing. dz

  • Haha 1

Share this post


Link to post
Share on other sites
rockfangd

So tonight I managed to pull the spark plug. It was all wet.

The only number I could get off was a 4 and the fact it says made in china (reassuring)

I then plugged the plug into the coil and let it hang. The battery was low but I did manage to see it spark.

Looked white when it sparked. So at least I know there is some spark now.

Any idea what the compression should be? Maybe I need to check that as well

Share this post


Link to post
Share on other sites
kwt
On 2/2/2019 at 8:18 PM, rockfangd said:

I reinstalled the original engine. Rebuilt the Carbeurator, It was pretty bad in the bowl.

 

When the engine cranks over it starts to drip fuel from the overflow on the carbeurator. It will not fire on aid either.

 

Any insight is highly appreciated. Thanks all

You still have carb troubles. Obviously the float needle isn't seating. Bad float or valve or float adjustment.

Share this post


Link to post
Share on other sites
kwt
On 2/3/2019 at 7:49 AM, dhoadley said:

I'd get a Nova II module to replace the points and condenser. Cheap and simple, then see about spark. If still no spark, then coil. That's how I'd go at it, But I really don"t know what I'm doing. dz

And if you use the nova module, you need to use a points/condenser/OEM type coil. Don't let someone tell you that you need an electronic ignition coil. They are not compatible.

Share this post


Link to post
Share on other sites
rockfangd

Thank you for the replies.

So when I rebuilt the carb I verified the float was level when the needle was seated.

I also blew air through the inlet while I manipulated the float. It worked fine when tested. 

But yes it does seem odd that it does drip fuel while it is cranking but not starting

Share this post


Link to post
Share on other sites
MrSteele

If you have spark, then you do not have ignition problems. Personally, I would install a new set of points and a condenser, a new flywheel key and put it back together. I have an 11 HP engine on a Dixon mower that has been running well on the points I put in it on a rebuild over 10 years ago. You could also install the Nova module, but, again, if you have a spark at all, it is not likely a coil issue. With a sheared key, you will have spark, but at the wrong time. A sheared key does not imply that the key is sheared in two pieces, just a small amount of indentation on the key is enough to make it out of time.

When you put the bowl back on the carburetor, did you leave the fiber washer/gasket off? Without that gasket, the adjustment needle bottoms out in the jet, there will be no fuel flow into the system, and the bowl will leak.

If the float is too high, your fuel leak will be around the top of the bowl, with or without the gasket at the top of the bowl. Those gaskets are famous for tearing apart when removing the bowl. Float level is: level the top of the float with the bottom of the housing when the carburetor is turned upside down, with the float installed. I always set my floats a little low to level, never high, to prevent those leaks.

Add those problems to a bad plug, and you have an engine that will not run. Solve them, and use til something else pops up

Share this post


Link to post
Share on other sites
rockfangd

So float is level, if not just a hair under.

Gasket is new. Replaced it with the rebuild.

Fuel does not leak from the bowl but rather the porous brass at the end of the carb. (prevents pooling in the carb)

Maybe when spring comes I may find a little more time to get it running.

I have had it running a few times, once it starts warming up it runs fine.

But this last time I could not get it to run

Share this post


Link to post
Share on other sites
MrSteele
On 2/20/2019 at 8:49 PM, rockfangd said:

I have had it running a few times, once it starts warming up it runs fine.

But this last time I could not get it to run

Did you check under the cover and clean the flywheel because it would not start, or when you first got it, BEFORE the current problem of not starting? Has it ran since you checked under the cover and found rust, etc?

Share this post


Link to post
Share on other sites
rockfangd

I pulled the cover off for the no start issue.

I swapped the coil out , gapped it, lightly sanded the flywheel. 

I have not pulled the flywheel. I would like to find out if it did slip. Because it is possible.

Share this post


Link to post
Share on other sites
rockfangd

Hi all. 

I finally took a little time to look at this tractor today.

I pulled the dust cover off the flywheel to inspect the flywheel key, surprisingly it was completely intact.

I reassembled it. I then turned the fuel supply all the way in and backed it out about 1.5 turns.

I checked the fuel filter and it was full of debris.

Strangely enough it fired right up and ran good. First time in almost a year. I have no idea why it fired right up.

I let it run for awhile and tweaked the carb, The governor just shutters a little bit, I bet the spring is broke.

I have another issue though, the snowblower still spins even when disengaged. I think there is still tension on the belt but I cannot figure out how to back it off more. I had issues when I installed the carriage, MAybe I will post a picture. If I idle it down the pulley starts to squeal. I would like to get it up and going to try to use it this winter.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this  

  • Who's Online (See full list)

    • GrincheyOne
  • Today's Birthdays

    1. Nuzzy
      Nuzzy
      (39 years old)
  • Recent Status Updates

    • Paul M.Murphy

      Paul M.Murphy

      Hello glad I got on this site. I hope to upload a couple of photos of my Simplicity Broadmoor 
      Model 707 Tractor. I have replaced all the belts on it and installed a new ignition switch.
      Have a mower deck which was in poor shape , repaced a couple of bushings and welded the
      deck where there was some holes. The tractor and mower deck came from a friend and the 
      mower deck metal was getting pretty thin. Some new metal was put in it and we also undercoated the underside of the deck. This was done by my friend Greg Toulman.
      I have not put the mower deck on the tractor yet, waiting for Greg to come home and give me a hand. Can you please tell me if there is a manual for the mower deck and where I could get one.
      I would also like to get some moon wheel discs as well.
      I will try and down load some photos of the tractor when my wife shows me how to. 
      I really love driving this tractor and also how well it is made compare today's tractors, especially the flexible rear end and the rollers.
      Tell the next time 
      Paul
       
      · 9 replies
    • jbrooks

      jbrooks  »  Talntedmrgreen

      Josh
       
      folowing  this from a link at the downloads.  I just rescued an AC 920 with the lambodini diesel. I can' t download  yet .  Where did you find the PDF copy you posted. . I would like to figure out how to adjust the injection pump. 
      I assume it's a bosche, correct
      · 0 replies
  • Adverts

×