1979 V4 Evinrude Outboard Service Repair Manual for V4 Engines P/N 506764, Page 186Get this manual
Quality of the image is intentionally reduced!
TILTING SHALLOW WATER DRIVE (See Figure 9-3 While running in the shallow water drive mode, while the motor is tilted, the following valves and seals pressurized and must hold: The trim check valve