1990 Johnson Evinrude "ES" Electric Trollers Service Manual, P/N 507869, Page 24Get this manual
Motor Tube Clamp Screw Adjustment
Transom Mount Models
r:;:;] On the Transom Mount ModeL the motor tube clamp screw
also controls the steering frictionAdjust for desired steering frictionBow Mount Models '18l The mounting tube bracket can be detached and the motor removedSee Stowing and StorageHand Control, Bow Mount Models clamp screw so the motor tube can move up and down freelyFoot Control Models 12010n the Foot Control ModeL the motor tube clamp screw controls the motor height and must always be tightControl Housinig Adjustment, (Hand Control Models) r:;:;-J The control housing can be adjusted for your customary positionLoosen both set screws in collarTurn the control housing one-half of full turn (180) in either direction to change the position of the control housing to the motorRetighten set screw securely