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Timing system/valves
Reference
Timing diagram
With 1 mm valve
clearance
Intake
Exhaust
Intake valve diameter 44 mm
Exhaust valve
diameter
Valve lift
With 0 mm valve
clearance
Opening rocker arm -
intake
Opening rocker arm -
exhaust
Closing rocker arm -
intake
Closing rocker arm -
exhaust
Cold belt tension
DDS.2
adjustment
Limit value of used
belt (when cold)
Assembly value
Opening 4° B.T.D.C.
Closing 66° A.B.D.C.
Opening 61° B.B.D.C.
Closing 7° A.T.D.C.
38.5mm
Intake 11.20 mm
Exhaust 10.80 mm
0.10÷0.15 mm
0.10÷0.15 mm
0÷0.05 mm
0÷0.05 mm
Assembly value (new belt) Recovery value (used belt)
145±5 Hz (horizontal)
160±5 Hz (vertical)
Checking clearance upon set mileage
(Km 24,000 / mi 15,000)
0.10÷0.15 mm
0.10÷0.15 mm
0÷0.05 mm
0÷0.05 mm
100±5 Hz (horizontal) 100±5 Hz
(vertical)
70 Hz
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