1993 Johnson Evinrude "ET" 90 degrees CV Service Manual, P/N 508285, Page 302Get this manual
Pressure Leakdown Test
f1l OMC Power TrimlTilt Service Kit, PIN
434524, allows external verification of trimltilt operation and component condition The "A" adapter, PIN 336658, checks operation of the UP circuit The "B" adapterPIN 336659, checks operation of the DOWN circuit
This kit does not include gauge and collar assemblyGauge and collar assembly shipped with OMC Power TrimlTilt Service Kit, PIN 390010, will workA Gauge and Collar Assembly, PIN 983975, can be purchased from OMC SysteMatchedTM Parts and AccessoriesThis test must be performed with the hydraulic unit removed from the engine and mounted in viseThe battery must be fully chargedto specific gravity of 1.260 to 1.280 corrected to temperature of 80 (2]0 C)Refer to Battery Specifications, Electrical Section
t=I retaining ring pliers
themanual release valve retaining ring using
2Operate the trimltilt motor to full trim-in stall positionTrim rods will not retract without the gearcase pushing them3Loosen the manual release valve one turn