Timing System - Ducati MONSTER 821 2016 Owner's Manual

Timing system

DESMODROMIC system with four valves per
cylinder controlled by eight rocker arms (four opening
and four closing ones) and two overhead camshafts.
This system is driven by the crankshaft through spur
gears, pulleys and toothed belts.
Desmodromic timing system
1) opening (or upper) rocker;
2) opening rocker shim;
3) closing (or lower) rocker shim;
4) return spring for lower rocker;
5) closing (or lower) rocker;
6) camshaft;
7) valve.
252
6
2
1
2 5
2 1
3
5
4
7
Fig 169