I installed a new 3/4 horsepower Craftsman garage door opener. Went
well, no problems. Close position set and open position sets well.
However, when in the open position, and I push the botton to close
door, the initial motion is extremely bouncy and tourques the arm
upwards before continuing on it's path to close.
The mounting is solid and the open position is proper (i.e it is open
just short of level and not at a backwards slant).
Is my problem the angle of the arm from the wall to the motor unit? I
have a feeling the downward slant is not enough such that the motor
unit should be set lower.
Or...any other ideas?