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  #56  
Old 01-24-2010, 08:14 PM
curtisfarmer curtisfarmer is offline
LawnSite Senior Member
 
Join Date: Nov 2007
Location: Southern, NH
Posts: 511
NEUSWEDE, it is the fan, I clearly see the regenerative feature and it sure is louder when driving to clean the muffler filter. I am talking when it is parked after starting and idling to warm up. DEFINETLY the fan,....when real cold it builds from an idle to a slow howl until warm.
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