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Old Oct 24, 2015 | 12:24 PM
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Rusty_S's Avatar
Rusty_S
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V-Belt

I didn't personally write the part number down as I was at work but the part number on the fan belt on the 641 tractor we have is 738271 and I did some internet searching and could not find anything in reference to this.


I even tried searching for belt number decoding and the only ones I found mentioned the number as being number and a letter or a letter and a number not just all numbers.


What I am trying to do is find out this belt size so I can go one and two sizes smaller as the adjuster is a poor alternator conversion and the belt is stretched too much now where the fan on the alternator actually scrapes the tensioner bracket.
 
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Old Oct 24, 2015 | 02:03 PM
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From: very South Texas
take the old one to a good (not large) auto parts store..

they have a gauge and can measure all 3 dimensions needed and get the number and size you need..
 
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