Mercury 45 Jet 50-55 Service Manual page 392

Slow Tilt Down Under High Thrust
To tilt the engine down under high thrust conditions
[where the propeller thrust forces the shock rod down,
creating higher pressure below the memory piston
(m)] the camshaft lever (f) is rotated slightly down-
ward. The internal shaft connected to the lever will
open the down slow transfer valve (i) allowing oil un-
der pressure into the cavity around the shaft. The
higher oil pressure will open the up fast transfer valve
(j) allowing oil from the bottom of the cylinder to flow
above the shock piston (n) while lowering the engine.
Additional oil will flow into the accumulator (c) as the
internal pressure forces the accumulator check valve
(e) to open. Oil flowing into the accumulator moves
the accumulator piston (d) and compresses the gas.
90-817643R1 DECEMBER 1996 MID-SECTION - 5G-9