Mercury Optimax 115, 135, 150, 175, DFI year 2000 and up service manual., Page 436Get this manual

Mercury Optimax 115, 135, 150, 175, DFI year 2000 and up service manual., Page 436

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POWER TRIMDESIGN II
When submerged object is hit with great force, oil will build up sufficient pressure in the top of the tilt cylinder (4) to open both the trail over valve and the piston impa