VESPA 946 E4 EMEA 2021 Manual page 177

Vespa 946 E4-E5 EMEA-USA-ASIA (2021-)
- Tighten the nuts to an initial pre-torque of 9-11
Nm.
- Tighten up the nuts by rotating 270.0±5.0° with
crossed sequence.
- Fit the two screws on the outside of the timing
chain side and tighten them to the specified torque.
CAUTION
DO NOT PERFORM 270° IN ONE ROTATION. PERFORM
WITH THREE GRADUAL ROTATIONS, OBSERVING THE
SEQUENCE INDICATED ON THE STUD BOLTS.
N.B.
BEFORE INSTALLING THE HEAD, MAKE SURE THAT THE
LUBRICATION CHANNEL IS CLEAN USING A COM-
PRESSED AIR JET.
CAUTION
ALWAYS USE A NEW HEAD GASKET UPON REFITTING.
Locking torques (N*m)
Cylinder head nut (TIGHTENING)
the prescribed torque and then proceed with 270.0°±5.0°
Screws fixing cylinder to crankcase
rotation)
- 12.7
Refitting the rocker-arms cover
- Remove the cylinder head cover and tighten the
four clamping screws to the prescribed torque.
- Pay attention to the integrity of rubber gaskets,
replace them if necessary.
- Make sure the gasket is positioned properly.
Locking torques (N*m)
Head cover screws
10.8 - 12.7
Refitting the intake manifold
- Follow the disassembly process in reverse order to refit.
9 - 11 (Tighten to
10.8
Engine
ENG - 177