Honda BF35A-BF45A Outboard Motors Shop Manual., Page 430Get this manual
3) Push the "DM" side of the power trimtilt switch and compress the piston rod fullyWith the piston rod compressed fully, measure the upper chamber blow pressure by reading the pressure gauge(285355 kgfcrn2,
[I] Compress fully
(Upper chamber side)
If the blow pressure is out of the specified range, check each part of the power trimhilt 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 again
4) Push the "UP" side of the power trimtilt switch and extend the piston rod fully5Remove the special tool and pressure gauge from the
[I] SEALING WASHER
valve bodyInstall the sealing washer, manual valve and the internal circlip in the valve bodya