Ducati MONSTER 821 Workshop Manual page 875

Position tool (B) no. 88765.1623 with writing "UP" and the arrow pointing to the head cover.
Manually position the pins of tool (B) no. 88765.1623 in seats (G) of the exhaust side belt roller by hand.
Manually screw all the way in the knobs of tool (B) no. 88765.1623.
Use a torque screwdriver (E) to tighten the knob nuts of tool (B) no. 88765.1623 to a torque of 2 Nm
±10%.
Fit the horizontal piston-cylinder assy timing belt around the cylinder head belt rollers and pass it behind
the idler pulley.
Note
If the used belts are to be refitted, position them in their original direction of rotation and on their original
cylinder.
Repeat the same procedure when reassembling and checking the horizontal head components.
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