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Message: <blockquote data-quote="TriHonu" data-source="post: 9450" data-attributes="member: 897">I asked my dealer the same question about my 763F.  It also did not seem to put out much heat.  They told me there should be a restrictor inserted in the hose near the T fitting.  They stated they have seen a number of machines that people had removed the restrictor trying to get more heat.<img src="https://www.skidsteerforum.com/DesktopModules/AdverForums/ImageGallery/emotion-3.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" />  I was told the older loaders (pre G series) heaters will not put out near the heat of the G or K series machines.  I don't know if the G series uses a restrictor in the hose or not.Are you sure the heater core is full of coolant?  You might try disconnecting both hoses and insuring the core is full.  If you can easily get to the heater core in your machine I would make sure it is not plugged and just not letting the air flow across it.  I would also measure the temp with the heater running and compare it to the temp at the engine.  You could try pinching the hose a little with a set of ViceGrips or a clamp and see if the temp at the heater core increases.Hopefully someone with a G-Series will chime in here</blockquote>