1969 Evinrude 40 HP Big Twin, Big Twin Electric Lark Service Manual 4596, Page 80Get this manual
Figure 6-55Tilt Friction Adjustment
TILT FRICTION
Figure 6-54Steering Friction Adjustment
The stern bracket tilt shaft, with conical washers and spring loaded nut, provides adjustment to help hold motor in tilted position while beaching or launching boatA tilting lock pin can be pushed in to hold motor in full tilt positionSee Figure 6-55Tighten the nut against spring tension to hold the motor in tilt position, but loose enough so motor can be returned to drive position without effort