1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 251Get this manual
POWER TRIM AND TILT 8-22 MANUAL RELEASE CIRCUIT (MANUAL VALVE) Operation:Turn manual valve maximum two (2) full turns counterclockwiseWhen the manual valve is loosened, oil will flow unimpeded (without resistance) through the internal pump tubes, thereby facilitating manual tilting or lowering of the outboardTo hold the engine in selected position, the manual valve must be closed again Tilt rod