l
Guest
Not sure..you wrote dial-a-matic...that's header height control. I think you are refering to the big black knob on the console to adjust the reel speed...RightIJ
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Combines 7720 reel speed
rf
Guest
If your talking about the big black knob. I had the same problem and the hose clamps that attach the knob to the valve needed replacing and tightening. Took about 30 minutes once you remove the flat balck plate from around the gearshift, throttle and cylinder speed levers.
Duane
Guest
The control could be sticky. Need to loosen it up with some diesel fuel and a wrench. That may help.