1985 Mercury Outboard V-300 V-3.4L Shop Service Manual, Page 158Get this manual
TRIM CYLINDERREMOVAL and INSTALLATION REMOVAL
AWARNING
When working around an outboard, tollow
these steps:
1Disconnect baHery leads from battery2Be lure that remote control wiring harne 'S connected to engine wiring harness(Engine can be started with or without remote control wiring harness connected to engine wiring harness, but engine cannot be shut off unle harness.s are connected together 3Turn Ignition key toOFF" pOlltlon and
remove key from switch
AWARNING
knob make lure all perlons are clear of engine .s engine will drop to lulldown" position
Before lool enlng the manual releasvalve
aSolid Metal Bar Support Rope Hais t