Operation Of Power Tilt; Operations Of Hydraulic Circuit - TOHATSU MFS 9.9 Service Manual

PTT Unit

3. Operation of Power Tilt

・The power tilt system has an electric motor built in the system that drives the hydraulic pump to feed pressurized oil
into the tilt cylinder.
・The power trim switch located on the tiller handle or remote control box is used to tilt-up or down the outboard motor.
・The switch is also used for trim operation of the outboard motor during driving at low speed.

4. Operations of Hydraulic Circuit

Manual valve
Manual Tilt Operation
Turning the manual operation valve counterclockwise 2 or 3 times opens the manual operation circuit.
The outboard motor can be tilted up or down easily by hand.
When the manual circuit is closed completely by turning the manual valve clockwise before the outboard motor reaches
completely tilted up or down position, the outboard motor holds the position at the time.
6
: Tilt up
: Tilt down
Cylinder upper chamber
Piston
Cylinder lower chamber
Tilt rod
Oil reservoir
4st 9.9/15/20 2009