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Discussion Forum
:

Model C Unstuck motor, and a couple of questions

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Dave from Southwest Michigan

09-17-2002 05:53:56




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Good Morning to you all:

A week or so ago, I wrote about the sudden stoppage of our little C and the subsequent "stuck" motor and ask for help. I appreciate all the responses. And I have good news: Saturday I finally had a chance to get back to the little C for a look-see (I currently commute from Houston to our home in Southwest Michigan; don't ask, long story, but hopefully it won't be that way much longer!!) and I took apart the governor as some of you suggested to check the flyweights. They were both there, but the whole assembly was really worn and will be replaced, and the motor was still "stuck".

I stood back a few minutes and review all that had happened up to the point of the motor seizing, and I began to suspect the starter.

Sure enough, when I pulled the starter, it was still engaged to the ring gear. Pulling it out freed the engine and the sun popped out from behind a very dark cloud! Thinking back over the last several times I had started the little C, there was a lot of hesitation from the starter, and I surmise that the "last time", the drive simply stayed engaged to the flywheel and the engine drove the starter till it overheated, seized, and locked up the motor. Fortunately, it appears that no damage was done to the ring gear, and the fix will be replacement of the starter. A much easier fix than having to split the tractor.

Now, my questions. In reinstalling the new governor, I will have to reset the distributor. I understand how timing works and will get #1 cylinder on TDC ready to fire. The service manual says to look for the "FIRE" timing mark on the left-hand side of the torque tube. I looked all over the left-hand side and I don't see what the manual is refering to. I don't see a plug or mark or anything.

Do any of you know what this is about? Is the distributor timed to fire AT TDC or is there a certain number of degrees BEFORE TDC where the distributor has to be set?

And one final question. Looking close at the carburetor (it's a Zenith), I noticed a broken spring on the back side of the carburetor.

Should there be a spring on the throttle shaft? If so, where would it attach to the block? Is this to aid in the operation of the governor, or has someone tried to compensate for the worn governor by installing a spring that otherwise wouldn't be there?

Thanks for all your help. Really enjoy reading the comments from y'all.

Dave

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Bob

09-18-2002 11:35:55




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 Re: Model C Unstuck motor, and a couple of questions in reply to Dave from Southwest Michigan, 09-17-2002 05:53:56  
Hi Dave,

I also have one of these "little" tractors and love it. You can count on Duey's imput. I did, and I am now mowing again with my "C". Duey should have an MD after his name. How about "Duey, AC,MD?"



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dave of southwest michigan

09-19-2002 05:17:05




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 Re: Re: Model C Unstuck motor, and a couple of questions in reply to Bob, 09-18-2002 11:35:55  
bob;

you're right there!!! it hasn't taken long for me to recognize that he is a bit of a "genius"!!

i'll be workin' on the little c this weekend when i get back to michigan. i'll keep ya posted.

good to hear from you.

dave



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Duey (IA)

09-17-2002 06:24:41




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 Re: Model C Unstuck motor, and a couple of questions in reply to Dave from Southwest Michigan, 09-17-2002 05:53:56  
Dave,
On the left side of the torque tube, just rear of where the engine bolts on, are three holes. Top and bottom holes are bolt holes for mounting equipment. The center hole is where you look in at the flywheel. The mark is on the flywheel. Set the static (engine not running) timing on the TDC mark for a distributor. The distributor has the advance mechanism that will advance the timing. When checking the timing with a timing light, engine over half throttle, the advance mark will show in the hole.
The spring is an anti-surge spring that hooks to the generator bracket or to a manifold bolt. Duey

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stihl028

10-18-2006 06:23:51




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 Re: Re: Model C Unstuck motor, and a couple of que in reply to Duey (IA), 09-17-2002 06:24:41  
Duey, I do not want to disagree with you, however I think you are getting two seperate springs in your statement. Correct me if I am wrong, the choke return spring is hooked to the generator bracket, the anti-surge spring is connected to the manifold and into the throttle linkage. There is a hole in the linkage for this spring, you may have to scrape some paint or oil to find it.

I am waiting on parts to replace my governor and will more and likely need your expertise later on.

Thanks,
Jay

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