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ST4
72
E
Desmodromic timing system
(fig. 80)
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.
Engine
Twin cylinder, four-stroke, 90° “L” type, longitudinal.
Bore:
94 mm
Stroke:
66 mm
Total displacement:
916 c.c.
Compression ratio:
1:11.0±0.5
Max. power at crankshaft (95/1/EC):
77 kW – 105 HP at 9500 rpm
Max torque at crankshaft (95/1/EC):
89 Nm at 7250 rpm
Max. rotation speed
10,000 rpm
Important
Do not exceed specified rotation speed limits under
any running condition.
Timing system
Desmodromic
(type) with four valves per cylinder,
operated by eight rockers (4 opening rockers and 4
closing rockers) and two overhead camshafts. It is
operated by the crankshaft through spur gears, belt
rollers and toothed belts.
7
6
6
8
2
1
5
1
3
4
fig. 80
Содержание 2003 ST2
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Страница 85: ...85 E USA Label location fig B 3 10 11 4 1 5 9 8 6 1 2 7 7 9 fig B...