KeyStoker Convection blower rheostat adjustment

On my Keystoker furnace I have a Convection Blower Rheostat setting and the manul says it's to adjust the fan speed and sound of the convection blower but it makes no recommendation on the setting there is a white mark on the plate behind the knob ? Does anyone know how to adjust when I turn the knob in either directioin it does not sound like the blower is going higher or lower the blower always sounds the same ?.

Are you sure your listening to the right fan, the combustion fan runs 24/7 on high all the time if I'm not mistaken on newer K-stokers

I'm all set Thanks, I found my problem..

JoeD wrote:I'm all set Thanks, I found my problem..

What was the problem?

The fella that sold me my Stive told me to Oil the plastic cam on the Convection blower motor I did and it resolved the problem he also had me adjust the coal feed, I did these two things and performed a thourgh cleaning of the Furnace and my sweat heart is purring again..