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Engine
Twin cylinder, four-stroke, 90° "L" type, longitudinal.
Bore:
90 mm
Stroke:
58,8 mm
Total displacement:
748 cu.cm.
Compression ratio:
1:11.7±0.5
Max. power at crankshaft (95/1/EC):
76/103 at 10,000 rpm
Max torque at crankshaft (95/1/EC):
77 Nm at 8500 rpm
Max. rotation speed:
11500 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 rocker arms (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.
Desmodromic timing system (fig. 81)
1) Opening (or upper) rocker.
2) Opening rocker shim.
3) Closing (or lower) rocker shim.
4) Return spring for lower rocker.
5) Closing (or lower) rocker.
6) Camshaft.
7) Valve.
6
1
2
3
7
E
5
4
fig. 81
79
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