Ducati Monster 796 Workshop Manual page 369

Fork - steering head: front fork
Service limit:
- 270 mm.
Renew the spring if the length is not within the specified limit.
Inspect the outer surfaces of both fork inner tubes and the internal surfaces of both outer tubes. They must be free from
scoring, steps, or dents.
Check that the outer tubes are straight:
- maximum allowed error 0.10 mm.
Whenever the inner tube is removed from the outer tube it is good practice to renew the bushes (G) and (H).
Reassembly of the front fork right leg
Locate the outer tube (18) on the inner tube (6).
Insert the locating bush (10).
Insert the damper assembly (8).
Fit the seal (4) and tighten the adjuster screw (3).
Hold the left fork leg assembly (2) in a vertical position and fill with fork oil, using 500±2,5 CC of the specific oil.
Check the quantity of oil measuring the distance of the level from the end of the outer tube (18).