Figure 15 Determining Drive Arm Length for Standard Pedestal & Outward Opening GatesIf L = 934 and S = 333then D = 934 - 333therefore D (drive arm length) = 300.5mm(Do NOT cut the drive arm to this length allow anextra 50mm i.e. cut drive arm D = 350mm. See Fig. 16)= 60122The easiest way of measuring L and S is to hold the zero mark of thetape measure on the middle of the output shaft, and then to read offL and S at the gate bracket.Gate leaf in Closed PositionGate leaf in Open PositionLSD = L - S2Example:Page 24Figure 16 Adjust Drive Arm lengthConnecting ArmDrive ArmD + 50D (see Fig 7 or 9 and 10)For Parallel and Perpendicular Wall MountInstallations:Determine the drive arm length (D) fromFigures 10 and 11. DO NOT CUT THE DRIVEARM TO THIS LENGTH. Cut the drive arm atleast 50mm longer than D. The cut lengththerefore = D + 50mm (see Fig. 16)Fit the Drive Arm11. Once the drive arm has been cut to length,regardless of installation type, put the gearboxinto manual mode (See Page 43)12. Fit the drive arm and connecting arm assemblyto the motor output shaft as in Fig. 20, using thesupplied M10 or M12 bolt and washer (Checkthat the flats on the shaft and clamp line upbefore tightening up the bolt.)Set the Connecting Arm13. Prepare the connecting arm for installation, bymoving the inner tube to the retracted position(see Fig. 17). Turn the inner tube clockwise