lost grond speed from 8mph to 5mph Hustler fastak superduty

cle

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  • / lost grond speed from 8mph to 5mph Hustler fastak superduty
I have 2010 fastrak super duty 54, last summer I noticed going slower even though 25kaw still running at high rpm...I checked tension on hydro belt and pullies / dealer couldn't help me any...is there an adjustment I'm missing,
 

MRCo.

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  • / lost grond speed from 8mph to 5mph Hustler fastak superduty
Loss is on both sides and a consistent amount?
 

cle

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  • / lost grond speed from 8mph to 5mph Hustler fastak superduty
both wheels are going the same speed going straight and in reverse
 

edd

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  • / lost grond speed from 8mph to 5mph Hustler fastak superduty
have you changed the hydro oil ? could it be the filters are stopped up?
 

MRCo.

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  • / lost grond speed from 8mph to 5mph Hustler fastak superduty
So the issue is common to both sides, so it's got to be a common cause. What's common to the two? The oil and the drive belt. Start there.
 
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