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60
Engine
Twin cylinder, four-stroke, 90° “L" type, longitudinal.
Bore, mm:
80
Stroke, mm:
61.5
Total displacement cu. cm:
618
Compression ratio
±0.5:1:
10.5
Max. power at crankshaft (95/1/EC):
47.3 kW - 64 HP at 9,500 rpm
Max torque at crankshaft (95/1/EC):
53 Nm at 6,750 rpm
Timing system
Desmodromic
(type) with two valves per cylinder,
operated by four rockers (2 opening rockers and 2 closing
rockers) and one overhead camshaft. It is operated by the
crankshaft through spur gears, belt rollers and toothed
belts.
Desmodromic timing system
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. 57
ProCarManuals.com
Summary of Contents for MONSTER 620
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