1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 288Get this manual
Function Tests
After servicing the prewired surface mount remote control, the following static tests must be performed to be sure all safety-related features are functioning; to avoid sudden loss of control over engine speed or direction
Emergency stop switch Key switch Control handle position Neutral start switch Control cable identification Control handle friction Trimtilt switch 1Disconnect the engine battery cables at the battery2Disconnect the throttle and shift cables from the engine3Disconnect the engine harness connector at the engineEmergency Stop Switch