1997 Johnson Evinrude "EU" Accessories Service Manual, P/N 507270, Page 100Get this manual
Pressure Leakdown Test Before servicing hydraulic unit, it should be pressure tested to determine the unit's malfunctionThis test must be performed with the hydraulic unit removed from the engine and mounted in vise or holding fixture
OJ OMC Power TrimlTilt Service Kit, PIN
434524, allows external verification of trimltilt operation and component condition The "A" adapterPIN 336658, checks operation of the UP circuit The "B" adapterPIN 336659, checks operation of the DOWN ci rcu it
This kit does not include gauge and collar assemblyGauge and collar assembly shipped with OIVK: Power TrimlTilt Service Kit, PIN 390010, will workA Gauge and Collar Assembly, PIN 983975, is availableBe sure to use fully charged battery
rn 1is seatedPlace large drain pan in the hydrauliccatch Screw the manual release valve unit until it under the unit to
hydraulic fluid
2Operate the unit to the full up position, then jog the unit down to reduce pressureLoosen the reservoir cap one full turnLoosen the manual release valve three turnsSome fluid will bypass the reservoir capThese steps will relieve the pressure in the unit3Remove the manual release valve retaining ring using retaining ring pliers