Mower Deck Vibration

mware43

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When I blew the engine on my riding mower the other day, I wasn't ready to buy a new mower, Remembered I had kept my previous mower, a 1980 Murray 36-inch cut, that had been sitting in the storage shed about 15 years. Drug it out, pumped up the tires poured in some gas, jumped it off and was surprised when it fired right up. After servicing (oil change, new filter, sharpened blades, oiled and greased) I set to cutting thinking it would get me through the rest of the season. But then I realized it has a bad vibration whenever the cutting deck is engaged. (Didn't remember this ever being a problem.) I inspected the two jack shaft assemblies and pulleys which seem to be fine. So I tried two new blades which made no difference. Now I'm wondering if the belts could be the problem. Thanks for any thoughts or suggestions.
 

Forest#2

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Model number from the 1980 MURRY mower? (complete tractor model number)

36 inch cut is probably a 2 blade deck

Might leave the blades off and test the vib's.

Also leaving the blades off will be safer when off the mower with the pto en-gauged to watch the deck and belt for vibs.

Stay safe
 
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