Just got my first tractor: '71ish MF 135 Diesel

   / Just got my first tractor: '71ish MF 135 Diesel #11  
Your 135 looks a lot like my 67, except mine has the flat top rear fenders. The serial number tag is on the rear cowl low on the left side, as stated previously. I'm repainting mine now.

My father taught me a trick on the 67 that doesn't have the diff lock. If you are spinning a rear wheel, unlock the brake pedals and use them to lock the spinning wheel. You can alternate back and forth, as required, to get the tractor out of the mudhole, bog or wherever.
 

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