Care and maintenance work 6.7 Adjustments EX IN 2 3 1 2 4 1 1 2 x 3 6 Setting the valve clearance z Before valve clearance setting: Let the engi- ne cool down for at least 30 minutes. Oil temperature below 80 °C. z Set crankshaft according to setting sche- matic, ( 41 ) z Loosen screws 1. z Remove valve cowling 2 with gasket 3 z Mount the turn-over gear on the flywheel with fastening screws. z Turn over the crankshaft until you reach val- ve overlap. 1) Cylinder 1 bank A order ( 41 ) z Loosen lock nut (1). z Mount rotation angle disc (4) and socket wrench insert on the valve clearance setting screw (2). z Fix the magnet of the rotation angle disc (4).
z Turn the rotation angle disc (4) clockwise to the stop (rocker arm without clearance) and set the scale to zero. z Turn the rotation angle disc (4) anticlockwi- se until reaching the specified rotation angle value. IN = inlet valve 90 ° +10 ° EX = outlet valve 108 ° +10° z Remount the valve cowling with a new gas- ket in reverse order. z Replace the screws (tightening torque 22 Nm). The valve clearance can also be set using a feeler gauge. Gauges with 0.25 mm or 0.09 in- ches must be used for the inlet valve. Gauges with 0.30mm or 0.12 inches must be used for the exhaust valve. Setting schematic for the valve clearance Valve overlap: Exhaust valve is not yet closed.
Inlet valve begins to open. z Hold the rotation angle disc (4) to stop it twisting. z Tighten the lock nut 1 (tightening torque 20 Nm ). z Then set the second valve on the rocker arm as described above. z Repeat the setting procedure on every cylin- der. ( 51 ) . 1) Exhaust valve is not yet closed, inlet valve begins to open. 40