Cylinder Head Overview

Cylinder Head Overview

• Replace the cylinder head bolts.

• During assembly, replace self-locking nuts and bolts.

• Always replace bolts that are tightened to torque as well as O-rings and gaskets.

• When installing a replacement cylinder head with camshafts installed, oil contact surfaces between roller rocker levers and cam running surfaces after installing cylinder head.

• Do not remove plastic bases protecting free up valves until immediately before installing cylinder head.

• When replacing the cylinder head or cylinder head gasket, coolant must be completely replaced.

• Cylinder heads with cracks between the valve seats, or between the valve seat and the spark plug threads, can continue to be used without reducing the service life, as long as the cracks have a width of max. 0.3 mm, or only the first 4 threads of the spark plug threads are cracked.

• Right cylinder head is depicted in the illustration.






1 Cylinder Head Gasket

• Removing and installing, refer to => [ Cylinder Head ] Cylinder Head

• Installed position: Part Number, points to cylinder head

• After replacing, change engine oil and coolant

2 Lifting Eye

3 Bolt

• 22 Nm

4 Gasket

• Replace if damaged or leaking

5 Cylinder Head Cover Gasket

• Replace if damaged or leaking

6 Cylinder Head Cover

• Removing and installing left cylinder head cover, refer to => [ Left Cylinder Head Cover ] Left Cylinder Head Cover

• Removing and installing right cylinder head cover, refer to => [ Right Cylinder Head Cover ] Right Cylinder Head Cover

7 Ignition Coil

8 Special Bolt

• 10 Nm

• Replace if damaged or leaking

• Observe sequence for tightening => [ Tighten cylinder head cover in sequence. ] Left Cylinder Head Cover

9 Cylinder Head Cover Gaskets

• Replace if damaged or leaking

10 Cylinder Head Cover Gasket

• Replace if damaged or leaking

11 Semicircular Seal

• Replace if damaged or leaking

12 Cylinder Head Bolt

• Replace

• Follow the sequence when loosening => [ Follow sequence when loosening cylinder head bolts. ] Cylinder Head

• Observe sequence for tightening => [ Tighten cylinder head in sequence indicated, in four stages as follows: ] Cylinder Head

13 Cylinder Head

• Removing and installing, refer to => [ Cylinder Head ] Cylinder Head

• Check for distortion, refer to => [ Checking Cylinder Head for Distortion ]

• After replacing, change engine oil and coolant

Checking Cylinder Head for Distortion





- Check cylinder head at multiple points for distortion, using straight edge and feeler gauges.

• Permissible distortion: max. 0.1 mm.

Reworking Dimension, Cylinder Head





- Resurfacing cylinder head (face grinding) is only permissible to minimum dimension - a -.

• Minimum dimension: - a - = 139.25 mm.