Timing System - Ducati Scrambler 1100 Pro 2020 Owner's Manual

Timing system

DESMODROMIC system with two valves per
cylinder controlled by four rocker arms (two opening
and two closing ones) and one overhead camshaft.
This system is driven by the crankshaft through spur
gears, belt rollers and toothed belts.
Desmodromic timing system
1) Opening (or upper) rocker arm;
2) Upper rocker arm shim;
3) Split rings;
4) Closing (or lower) rocker arm shim;
5) Return spring for lower rocker arm;
6) Closing (or lower) rocker arm;
7) Camshaft;
8) Valve.
1
2
4
3
6
7
8
5
Fig 201
233