Honda BF35A-BF45A Outboard Motors Shop Manual., Page 429Get this manual
3) Push the "DM"side of the power trimltilt switch and compress the piston rod fullyPush the "UP" side of the power trimltilt switch againWith the piston rod extended fully, measure the lower chamber blow pressure by reading the pressure gaugeBLOW PRESSURE (Lower chamber side) 19.323.0 MPa (197 -235 kgfcm2, [Extend fully
If the blow pressure is out of the specified range, check each part of the power trimltilt assembly for oil leakageIf there is no oil leakage but the blow pressure drops below the specified pressure quickly, the power trimltilt motor assembly can be faultyReplace the motor assembly with new one and measure the blow pressure againAfter measuring the lower chamber blow pressure, measure the upper chamber blow pressure
UPPER CHAMBER BLOW PRESSURE
1) Remove the special tool (gauge joint body B) that is for measurement of the lower chamber blow pressure from the valve bodyInstall the special tool (gauge joint body A) that is for measurement of the upper chamber blow pressure in the valve bodyTighten the special tool to the specified torque[SEALING WASHER