Repairs HRX217HYA RPM Problem

Oldfulla

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Jan 7, 2017
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I have the 217 with blade brake and hydrostatic drive. The other day I hit a post pretty hard and didn't notice anything immediately, but on the next lawn a week later it seemed to be struggling a bit in the thicker grass, and cutting the grass instead of mulching. I thought the revs had dropped a bit, but had nothing to confirm this as had no tachometer. I know it was running around 3200 under load when on full throttle before a cheap tach I had died. I got another cheap one but I don't really trust it, I did a governor adjustment that increased it a bit but now there is a noticeable large increase in revs when the blades are disengaged. I have to start it and idle it at about half throttle, engage blades then increase to full throttle. Then when the mowing is done and I disengage blades revs increase drastically.

What should I check to see if hitting the post did some damage, and do the the symptoms sound consistent with hitting something, or should I be checking somewhere else?

Mower is pretty new, probably done around 20 hours.

Thanks for any input.
 

bogdaN

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Mar 27, 2016
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I would removed flywheel and check key stock,maybe partially cut.But first check blades,that might be bend or dull.Dan
 
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