Yamaha F100B F100C Outboards Factory Service Manual, Page 242Get this manual
BRKT WARNING
Bracket unit
4Install new O-rings and into the tilt piston 85Install the balls 9, absorber valve pins 0, and spring as shown6Install the tilt piston 8, washer B, and nut to the tilt ram 5, and then tighten the nut to the specified torque
Do not push the trim rams down while installing them into the trim cylindersOtherwise, the power trim and tilt fluid may spurt out from the unit