

Help with a Massey MF-650 Tiller
Started by
Fergie1969
, Oct 17, 2011 09:11 AM
4 replies to this topic
#1
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Posted October 17, 2011 - 09:11 AM
I have a great little MF-12 with a 650 Tiller. Works great overall but am shearing pins on the tiller on a regualr basis. Read through the tiller manual and cannot find the recommended shear pin size for the tiller and wondering if anyone could healp me with this infirmation. I have been using a 5/16, 2 inch from my snow blower and they seem to fit, but getting pretty worn out with crawling under the tiller to replace shear pins.

#2
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Posted October 17, 2011 - 09:12 PM
Not sure what you mean by shear pins, there are nuts, bolts on the drive shaft and the tines. Which ones are breaking?
#3
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Posted October 18, 2011 - 01:22 PM
Oops...I meant shear bolts. Facing the back of the tiller with the drive on the right, the bolt is just left of the worm gear box. When I bought the tiller, one of the bolts was a shear type. It snapped the first time I used the tiller and I keep putting in a new one and pretty soon and back crawling around under the tiller to replace it. Guess my question is....having read every inch of the manual to no avail.....is this supposed to be a shear bolt or an actual bolt? It is actually on the tiller shaft and roughly 2 inches long, when it breaks, the tines on the left (facing the tiller from the back) do not spin.
#4
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Posted October 18, 2011 - 01:24 PM
on another note.....any idea where I might find a seat close to the original? Have a seat on but just a general replacement type and want one that is as close to original as possible.
#5
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Posted October 18, 2011 - 05:49 PM
on another note.....any idea where I might find a seat close to the original? Have a seat on but just a general replacement type and want one that is as close to original as possible.
They used a bunch of different sizes on those tractors. 3 or 4 at least. if you can find a seat pan, you can have a new seat cover made, but the cover & style will depend on year of the tractor. Did you figure out year yet? If so, There are some guys on here that have almost nailed down year of use on the seat styles.
See this thread: http://gardentractor...2751/#post24948
And here is the finished seat for that tractor: http://gardentractor...age2/#post41299
Edited by MH81, October 18, 2011 - 05:55 PM.