LOOSEN 90º AND TIGHTEEN THE CYL. HEAD BOLTS ONE BY ONE FOLLOWING THE SPECIFIED TIGHTENING AND ORDER
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TURN THE ENGINE UTIL THERMOSTAT IS COMPLETELY OPEN
LET ENGINE COOL DOWN FOR 4 HOURS (WITH OPEN BONNET)
OPEN THE FILLER CUP OF THE COLLING WATER CIRCUIT EXPANSION VASE
Retightening
IF A RETIGHTENING IS NECESSARY: LOOSEN 90º AND TIGHT AGAIN THE CYL. HEAD BOLTS ONE BY ONE FOLLOWING THE ORDER AND LAST TIGHTENING SPECIFIED. THIS OPERATION SHOULD BE CARRIED OUT BETWEEN 1000 AND 1500 KM