1990 Johnson Evinrude "ES" Electric Trollers Service Manual, P/N 507869, Page 23Get this manual
Bow Mount, Hand Control Models
G1l Loosen the steering friction knobthen loosen the height
adjustment knob Set desired height with the height adjusting collar against the steering friction clamp positioned on the mounting bracketTighten height adjustment knob and steering friction knob Bow Mount, Foot Control Models
f121 Loosen the clamp screwheight adjustment knob Adjust
Motor to Guide Adjustment