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Use to run now it won't


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#16 DanP OFFLINE  

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Posted January 10, 2012 - 04:22 PM

Is there a way to check that SSI unit? The service manual tells how to check the coil but not that unit. I do have another one around but not sure if it works.

#17 MH81 ONLINE  

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Posted January 10, 2012 - 05:07 PM

I have the techumseh manual at home, it basically says to test, swap with known good unit. :wallbanging:

I would put an inline spark checker on it. Turn it over and see if you have spark.

#18 DH1 ONLINE  

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Posted January 10, 2012 - 06:37 PM

What part does the stator/coil play in the ignition and is the rectifier part of the ingition?


The Stator coil does 2 things
1 - produces AC voltage that is fed to the rectifier/regulator to power the 12volt DC circuit.
2 - Supply's power to the SSI unit so it can fire the spark.

If you look at the Stator coil you can see 1 of the coils is different from all the others, that is the one that feeds the SSi unit and that is the one that you measure your 400+ ohms at.


Is there a way to check that SSI unit? The service manual tells how to check the coil but not that unit. I do have another one around but not sure if it works.


The service manual says to test the SSI unit.
With the spark plug removed,
Hold the spark plug wire 1/4" away from the block or head,
Crank the engine over rapidly and you should see spark.

I can get a spark by turning the engine over by hand.

Try a spark plug out of another running engine.

#19 HowardsMF155 ONLINE  

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Posted January 10, 2012 - 06:41 PM

I can't remember if you have replaced your plug or not. The past six months I've rebuilt a carb and replaced ignition points because the plug "couldn't be bad, I replaced it 6 months ago".
Another tractor that was letting me down between early November and today just received a new plug, and ALL the starting issues went away. Man I hate when you get them running just to have to sell them.

So.........Put in a NEW plug regardless.
Howard

#20 olcowhand ONLINE  

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Posted January 10, 2012 - 06:42 PM

Are both trigger pins (short one & taller one) still in the flywheel?

#21 IamSherwood OFFLINE  

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Posted January 10, 2012 - 07:33 PM

Are both trigger pins (short one & taller one) still in the flywheel?



And clean



Also, have you checked the governor linkage?
Perhaps the paint is causeing a sticking problem there.

#22 DanP OFFLINE  

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Posted January 10, 2012 - 09:51 PM

IT RUNS!!!!!!
The problem is I am not sure what I did that solved the problem. The first thing I did was to make a ground wire that went from the negative battery post to the motor and the rectifier. I then put the shroud on and tried to start it no luck, I messed with the carb some more and it started to hit but not very often. I decided to try a different SSI modual and it started to fire more. My son walked in and I asked him to turn it over while I looked in the carb, good way to loose eyebrows. I could see gas flowing from the jet. One thing that still bothered me is the starter was really laboring to turn it over. My son said it might turn over better if you took it out of gear. Dumb me I had the vari speed lever in high instead of park. We took the belt off started it up and it ran fine. Some carb adjustments and it was running great. I still have a little idle problem but will play with that tomorrow night. We put the belt back on and put it in PARK and it ran fine. So we did some touch up on the paint and decided to call it a night.

I want to thank all of you that gave me suggestions and ideas, this is a great bunch of people to take as much interest in others projects and help like this. I hope I can return the favor some day.

#23 DH1 ONLINE  

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Posted January 10, 2012 - 09:57 PM

Good stuff it runs, glad you got it sorted out.
Too much load on the engine, that was the problem.

#24 MH81 ONLINE  

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Posted January 10, 2012 - 10:12 PM

Now that is some great news. :dancingbanana:

Very glad to hear it started. By the way, you're not the first guy to try to start something in gear...

#25 DanP OFFLINE  

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Posted January 10, 2012 - 10:23 PM

By the way my son will receive a gift certificate at his favorite pizza place for this one.

#26 cookiemonster OFFLINE  

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Posted January 10, 2012 - 10:50 PM

Spike the ball -you did it!

#27 IamSherwood OFFLINE  

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Posted January 11, 2012 - 02:52 AM

Whew, that's good news. After all the great work you've put into this project, it'd be a real bummer if you had to
push it around.:thumbs:

#28 ckjakline OFFLINE  

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Posted January 11, 2012 - 08:32 PM

Glad to hear it.A job well done.Now back to completing it.




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