Engine; Timing System - Ducati MONSTER S4Rs Anleitung- Und Instandhaltungsheft

Engine

Longitudinal 90° "L" twin cylinder, four-stroke.
Bore (mm):
100.
Stroke (mm):
63.5.
Total displacement cm
E
998.
Compression ratio:
11.4±0.5:1.
Max power at crankshaft (95/1/EC):
88.8 kW -119 CV at 9250 rpm.
Max torque at crankshaft (95/1/EC):
96.9 Nm (9.9 kgm) at 7500 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.
66
3
:
Desmodromic timing system (fig. 63)
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
7
fig. 63
5 4