PIAGGIO MP3 400 hpe E5 2021 Service Manual page 103

MP3 400 hpe E5
Engine
- Tighten up the nuts to an initial pre-torque of 9-11
± 1 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.
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)
Screws fixing cylinder head to crankcase
20 ÷
Cylinder head nut (PRE-TIGHTENING)
24 6 ÷ 8
Cylinder head nut (TIGHTENING)
9 ÷ 11 (Tighten
to 9 ÷ 11 Nm then proceed for 270.0° ±5.0° of rotation)
Fit the pins and rocking levers.
- Lubricate the two rockers through the upper
holes.
- Lubricate the two housings and insert the cam-
shaft in the cylinder head with the cams opposing
the rockers.
- Insert the calibrated pads and block the sliding of
the rockers by inserting the lock.
- Insert the retention plate and tighten the three
screws locking them to the specified torque. Clean
any threadlock remains from the seats, do not use
threadlock, the new screws to use during mounting
have scotch-grip application.
CAUTION
FOR THE INSTALLATION, ALWAYS USE NEW NUTS AL-
READY PROVIDED WITH SCOTCH GRIP.
Locking torques (N*m)
Containing plate retainer screws
4.5 ÷ 5.5
ENG - 103