Massey ferguson MF1018 mower deck need sizing of blade drive pulleys

[derekp19547]

I have a MF1010 tractor with a MF128 (same as MF1018 mower I'm told) belly finish mower.
I am putting new bearings and seals in the blade shafts and see that I actually have 3 different diameter pulleys for the mower shafts
yet the parts breakdown shows them to all be the same ADCO part number.
Can someone tell me what the pulley diameter should be so I can get the right sized pulleys on (and thus be able to get a new drive belt that fits properly)
One of the three must be correct (lol, so I'm hoping)

(Buying an ADCO pulley is out of the question as I was told they are about $100 each)

Appreciate the info - thanks in advance

 

[seville009]

Are you the original owner? If not, maybe the prior owner changed them out and used different size pulleys for some reason.

If you are the original owner and you bought it from a dealer, I’d suggest asking the dealer what the proper parts are if the manual is wrong.

 

[derekp19547]

Are you the original owner? If not, maybe the prior owner changed them out and used different size pulleys for some reason.

If you are the original owner and you bought it from a dealer, I壇 suggest asking the dealer what the proper parts are if the manual is wrong.

Not original owner, deck and tractor from the 80's
Parts list doesnt list sizes and dealer does not stock item for me to get dimensions
Hence my quest to get pulley sizes from someone that actually owns one of these
thanks...