2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 288Get this manual
2B-22 Power Trim and Tilt: Inspect manual release valve for damageReplace if necessary Inspect O-rings for cuts, nicks or tears2) Place the lower section of the PTT unit in viseTighten the vise only enough to secure the PTT unit, DO NOT OVER TIGHTENNOTE To prevent damage to the PTT cylinder use wood blocks, vise jaw protectors, etc between the vise jaws and PTT components before tightening vise I9J011220028-01
Inspect lower shaft and upper shaft for bends, twists or other damageReplace if necessary Inspect all bushings for excessive wear or other damageReplace if necessaryIf bushing fit is loose when installing, replace bushing Inspect upper and lower shaft for bent, twist or other damageReplace if necessary