2002 Ducati Monster 900 i.e. Owners Manual - Page 132

E Engine Twin cylinder, four-stroke, 90° "L" type, longitudinal. Bore mm: 80 (620); 88 (750); 92 (900). Stroke mm: 61.5 (620); 61.5 (750); 68 (900). Total displacement cu.cm.: 618 (620); 748 (750); 904 (900). Compression ratio ±0.5:1: 10.7 (620); 9.1 (750); 9.2 (900). Max. power at crankshaft (95/1/CE): 44.3 kW - 60 HP at 9500 rpm (620). 47 kW - 64 HP at 8750 rpm (750). 57 kW - 78 HP at 8000 rpm (900). Max torque at crankshaft (95/1/CE): 53.3 Nm - 5.4 Kgm at 6750 rpm (620). 60 Nm - 6.1 Kgm at 6500 rpm (750). 73 Nm - 7.4 Kgm at 6250 rpm (900). Important Do not exceed specified speed limits (see page 61) under any running condition. Timing system Desmodromic (type) with two valves per cylinder, operated by four rocker arms (2 opening rockers and 2 closing rockers) and an overhead camshaft. It is operated by the crankshaft through spur gears, belt rollers and toothed belts. Desmodromic timing system (fig. 43) 1) Opening (or upper) rocker; 2) opening rocker shim; 3) split rings; 4) closing (or lower) rocker shim; 5) return spring for lower rocker; 6) closing (or lower) rocker; 7) camshaft; 8) valve. 1 2 3 4 6 5 7 8 fig. 43 60