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Timing diagram with valve clearance of 1 mm
Intake valve diameter
Exhaust valve diameter
Continue to rotate in the same direction until you obtain a lift of 1 mm on the intake side.
Check the angular value on the degree wheel.
Continue to rotate until you obtain an intake valve lift of 1 mm on the gauge (B), during closure of the
valve for the compression stroke.
Check the angular displacement value with the specified one.
Continue to rotate the degree wheel counter clockwise until you obtain a lift of 1 mm of the exhaust valve,
when opening or closing the valve.
Check the angular displacement value against the specified value.
Repeat the procedure for the vertical cylinder.
A tolerance of ±3° is allowed in the values detected with the described procedure compared to the specified
ones.
Intake
Opening 4° B.T.D.C.
Closing 66° A.B.D.C.
Exhaust
Opening 61° B.T.D.C.
Closing 7° A.B.D.C.
44 mm
38.5 mm
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