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JohnF2015, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1107
Experience:  Owner/Service Technician at S & J Small Engines
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I have an older 61" three wheel. The unit runs fine 10 -15

Customer Question

I have an older 61" three wheel Scag. The unit runs fine for first 10 -15 minutes and
gradually loses speed and will not pull a grade at all. It appears that the pulley on the
hydro pump slows down also is it probably the belt?
Submitted: 1 year ago.
Category: Small Engine
Customer: replied 1 year ago.
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Expert:  JohnF2015 replied 1 year ago.

Hi, my name is***** will be assisting you.

Yes, it is most likely a belt problem since the whole machine slows. If it were a hydro problem then it would most likely only affect one side.

The first thing that I would do is replace the hydro drive belt.