Suzuki DF 90 Service Manual page 236

8-6 POWER TRIM AND TILT
5. Remove manual release valve snap ring 5, then remove
manual release valve 6.
6. Remove three bolts securing PTT pump case 7, then
detach PTT pump case from PTT body.
Note position of O-rings and remove them.
7. Remove upper eye 8.
8. Remove four bolts securing cylinder cover 9, then
detach cover from PTT body.
9. Remove O-ring 0.
O-ring