Yamaha tilt/trim rebuilding

[rusty vessel]

Does anyone have or know of where I can get instructions for rebuilding the tilt/trim hydraulic system for a 1987 Yamaha 115hp outboard? It doesn't look all that complicated but I don't want to get in over my head,

Thanks!!

[boats.net]

The service manual has information on rebuilding it. You can get the manual at Yamaha's web site www.yamaha-motor.com