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Massey Ferguson Mf7 New Project


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#31 redcarkids OFFLINE  

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Posted May 22, 2012 - 10:15 PM

Any one got a good photo of the linkage to the carb? I feel I have a spring missing or a rod bent more or less then it should. I am having a devil of a time trying to get this thing to run smooth. This carb is very sensitive. Any pointers as to how to tune a mf7 in would be appreceiated. Are the carbs the same on a mf8?

#32 MH81 ONLINE  

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Posted May 22, 2012 - 10:17 PM

I believe the linkage is the same. A lot of time with the Tec engines, a sensitive response is actually an over or under adjustment on the governor. I'm pretty sure the manual for that engine is in the engines section, see if it covers the gov adjust.
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#33 redcarkids OFFLINE  

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Posted June 01, 2012 - 02:54 PM

Messed with the massey today. Put on a new throttle cable, it works better. I still am having problems dialing in the motor. I have played with the govener adjustment, hi to low end. can not seem to find a happy spot. I still believe I have a spring missing. I went on another sight and found photos of a mf7 linkage. It did not match mine. Here are some photos of what I got. Can anyone verify this set up? Am I working on a h70 and is the carb correct for this model? Some h70 show the gas line hose going thru the shroud and the throttle cable going to the top of the carb area. My cable comes up from the bottom and attaches to the side of the shroud. Check out the photos and if anyone can confirm that what I have is original, let me know. When the motor runs it is up and down up and down. I have played with the governer linkage and had it running fast and consistant, but then I loose throttle control. When its running fast and consistant I cannot slow it down with the fast idler. I have put in a new spark plug set to .30 and bought a new air filter also. Is this a tecumseh carb or a walbro? The only number I can find on the carb is 2872413.
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#34 JDBrian OFFLINE  

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Posted June 01, 2012 - 03:57 PM

That's not the same as what's on my 8 at all. Different engine though.
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#35 redcarkids OFFLINE  

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Posted June 01, 2012 - 10:24 PM

That's not the same as what's on my 8 at all. Different engine though.

Well then this may be most of my problem. I have been tring to tune this thing to a mf 7, h70 manual. Where do I find model numbers on these tecumseh engines? Since the mf7 was manufactured, what 5 years?, did they have a set up change late in life or did someone else do a set up change on this mower?. Lets go back to the drawing board and see what I have under the hood. Can anyone give me a idea on the carb by the photos? Does the carb numbers mean anything to anyone?

#36 redcarkids OFFLINE  

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Posted June 01, 2012 - 10:26 PM

That's not the same as what's on my 8 at all. Different engine though.

Thanks brian, Are you saying your carb is different on the 8? or the engine looks totally different?

#37 Amigatec OFFLINE  

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Posted June 02, 2012 - 05:27 AM

I have a Tecumseh 8hp of my RotoHoe Tiller that looks like the same setup, I'll try to get some pictures of it.
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#38 Amigatec OFFLINE  

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Posted June 02, 2012 - 06:00 AM

I looked at mine and the linkage is different. On mine the rod on the throttle goes to the gov on the back of the motor. And on yours the rod comes from the control where the cable hooks.

#39 IamSherwood OFFLINE  

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Posted June 02, 2012 - 06:18 AM

That linkage setup is different than what's on my 7. Mine is the same as the picture in the 34307
service manual.


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#40 IamSherwood OFFLINE  

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Posted June 02, 2012 - 06:26 AM

Looks to be same carb, and linkage difference, could be because yours is the electric start version, where as
mine is pull start.

#41 redcarkids OFFLINE  

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Posted June 02, 2012 - 06:39 AM

I have a Tecumseh 8hp of my RotoHoe Tiller that looks like the same setup, I'll try to get some pictures of it.

Thanks Amigatec, photos would be great.

#42 IamSherwood OFFLINE  

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Posted June 02, 2012 - 06:40 AM

The engine model/serial number plate is usually on the blower shroud.

#43 redcarkids OFFLINE  

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Posted June 02, 2012 - 06:42 AM

That linkage setup is different than what's on my 7. Mine is the same as the picture in the 34307
service manual.


P1010126.JPG

Yours looks like the one in my manual also. I am missing the bracket on the top of the engine that holds all the springs and throttle cable connections. . The carb looks to be the same though.

#44 Bud OFFLINE  

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Posted June 02, 2012 - 09:58 AM

Here's pictures of my MF7. One pic shows the throttle on the right side above the muffler. This is before I redid the tractor. one pic shows after I redid, with the throttle comeing from the top left side. The last pic is the spare that was with the mf7 when I got it. I think that except for the white cover the rest was original. It has the lower left mounting.

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#45 redcarkids OFFLINE  

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Posted June 02, 2012 - 02:16 PM

Here's pictures of my MF7. One pic shows the throttle on the right side above the muffler. This is before I redid the tractor. one pic shows after I redid, with the throttle comeing from the top left side. The last pic is the spare that was with the mf7 when I got it. I think that except for the white cover the rest was original. It has the lower left mounting.

Bud the 3rd photo is what i have. You say this motor came off a mf7 or was it off of something else?




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