I learned something yesterday about Harman Magnum feed mechanisms.
I installed the stove in a hurry on my way out of town on Tuesday (I had to since I sold the Alaska and the new owner was anxious to see what his money had bought him). Stove was installed in record time, I got it lit and went out the door to the airport. My wife called me after a few hours and said the stove was almost out, I went through the procedure for adjsuting max feed on the Coal-Trol and on the mechanism. The best she could get was a little over an inch of fire and 250* stove temps. Needless to say a 64 degree house was not meeting my primary customers requirements!
I returned home yesterday and immediately started looking at everything to see what was going on (just remember if momma ain't happy , nobody's happy ). It took me a little bit of inspection and I almost gave up and removed the Hopper to tear into the mechanism when I noticed the feed mechanism fork was bent. See below for details and pictures.
Symptom: Feed would only increase to 2 dots at max. Root Cause: The feed mechanism fork that rides on the roller bearing had been bent at some previous time by a jam in the pusher area. Corrective Action: bend fork back to parallel position.
If you have a Harman, inspect your feeder mechanism fork at least once a season to make sure it has not bent and changed the settings on your stove.