1976 Evinrude 200 HP Outboards Service Manual, PN 5199, Page 170Get this manual
dersThe piston movement is then controlled so that the oil returning to the pump equals the combination of the oil flow to the cylinders plus the oil flowing to the reservoir through V-8The regulating and relief pressure is 800 psi MANUAL RELEASE The manual release allows the tilt cylinder to be moved without running the pumpWhen the motor is lowered with the manual release open, oil flows from the bottom side of the tilt cylinder and through the manual release valve into the top side of the tilt cylinderThis sequence is reversed for raising of the tilt cylinderIMPACT AND AUTOMATIC LETDOWN Impact (See Figure 9-5) When the motor impacts submerged object,the tilt cylinder piston moves upwardFour valves in the piston open when the oil pressure on the top side of the piston reaches 2500 psi and all the oil flows from the top side of the piston to the bottom side in the process absorbing energy