Engine; Timing System - Ducati MONSTER S4R S Use And Maintenance Manual

Engine

Longitudinal 90° "L" twin cylinder, four-stroke.
Bore (mm):
100.
Stroke (mm):
63,5.
Total displacement cm
998.
E
Compression ratio:
11,4±0,5:1.
Max power at crankshaft (95/1/EC):
88.8 kW - 119 HP at 9,250 rpm.
Max torque at crankshaft (95/1/EC):
96,9 Nm (9.9 kgm) at 7,500 rpm.

Timing system

Desmodromic (type) with four valves per cylinder,
operated by eight rocker arms (4 opening rockers and 4
closing rockers) and two overhead camshafts.
Driven by the crankshaft through spur gears, timing belt
pulleys and toothed timing belts.
74
3
:
Desmodromic timing system
1) Opening (or upper) rocker arm;
2) opening shim;
3) closing (or lower) shim;
4) return spring for closing rocker;
5) closing (or lower) rocker arm;
6) camshaft;
7) valve.
6
1
2
3
(fig. 67)
4
5
7
fig. 67