Refitting precautions

REFITTING PRECAUTIONS

Reverse the removal sequence for refitting unless otherwise specified in the following instructions.

VALVE TIGHTNESS CHECK

• Fit the spark plugs in their seats.

1. Pour some petrol in the combustion chamber so to just cover the valve caps.
2. Let low pressure air into the intake manifolds and into the exhaust manifolds. Check there are no air bubbles in the petrol. If there are bubbles, check correct position and if required machine the valve seats (see specific paragraph).

CRANKSHAFT REFITTING

• Fit the main half-bearings and the thrust half-rings on the crankcase and position the crankshaft.

NOTE: Make sure the lubrication ducts are facing the crankshaft shoulder when refitting the thrust half-rings.

• Fit the main bearings and half-bearings on the journals according to the numbers.

NOTE: The safety notches "A" on the crankcase and on the main bearings should be on the same side.

1. Fasten the main bearing fastening nuts at the prescribed torque.

NOTE: Use goniometer no. 1.860.942.000 for angle torque.

25 Nm + 79°
2.5 kgm + 79°