HELP! Harman P-61 is making a nasty high pitched sound

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Sounds like a carbon buildup around the auger tube.
 
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My P61 did the same thing, u switch pellets recently? did it for aobut 1 day and never again..
 
Sounds like auger is rubbing against carbon deposits at the edge of tube, tough to get in there unless you remove auger but try to pry away, the Harman tool (devil's tail) can usually do this.:cool:
 
If it is not carbon build up around the end of the auger, see my signature. Something is rubbing somewhere whether fines/pellets against auger bearing or in slide plate area.
 
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I had the same sound in my accentra insert. I emptied the fines and pellets in the feed chamber. Started it up and after about 10 minutes, the problem went away.
 
loosen the bolt that connects the motor to the auger move the motor back about a 1/16" tighten and you are good to go 99% of the time.
 
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