belt size

tew45

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I own a 2003 721D and the hydro belts shucked on me out in the vineyard. I need the size of the 38193 belt so I might get a local auto supply store replacement so I can get the mower out of the field quickly. I can get back ups from Grasshopper later. I just need some replacements now. I think they are 1/2 x 33 but I am not sure.
 

bertsmobile1

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Well I put your numbers into the Gates belt search web page and it comes up with a belt tensioning pully.
It would help those trying to help you if you gave them the same information that Grasshopper dealer wants from you.
THE MODEL AND SERIAL NUMBERS
 

BlazNT

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Wrong part number. One number short. Both belts are the same check the other one.
 

tew45

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The part number is correct. I called the Grasshopper support and found the 381903 needs a G after the number to signify a matched set. Grasshopper changed belt size mid 2003 my belts are the later series. the 381904 is early 2003 and before. According to grasshopper, the belt measurement is 33 1/4 inch. I think 33 inch belts would work in a pinch. The 381904 is 34 inch belt.
 

BlazNT

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I own a 2003 721D and the hydro belts shucked on me out in the vineyard. I need the size of the 38193 belt so I might get a local auto supply store replacement so I can get the mower out of the field quickly. I can get back ups from Grasshopper later. I just need some replacements now. I think they are 1/2 x 33 but I am not sure.

38193 is not the same as 381903
I am glad you can buy the belt now.
 

tew45

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Sorry! Errant fingers on the keyboard sometimes are unavoidable. No excuses just not paying attention!
Hopefully this small bit of info will help others.
 

tew45

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Found out that the belt size is a 1/2 x 33 size and not critical. Grasshopper calls for matched belts but if they are not matched the arm speeds may need to be adjusted.
 

phillip864

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I own a 2003 721D and the hydro belts shucked on me out in the vineyard. I need the size of the 38193 belt so I might get a local auto supply store replacement so I can get the mower out of the field quickly. I can get back ups from Grasshopper later. I just need some replacements now. I think they are 1/2 x 33 but I am not sure.

Sure hope you haven't been waiting for this reply but I saw some information at the end of this thread that is wrong. I have a 721D and the pulleys and tensioner pulleys will not accept a 1/2 inch belt, they are only 3/8 inch (.375). I am using Dayco belts on my mower and they work fine. I will have to look up Dayco number (I don't have it in front of me) but if there is any interest, I will post proper number.
 
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