Checking the position of the camshafts
1. Install the piston of the first cylinder.
2. The piston of the first cylinder is in the TDC position when the cams of the intake and exhaust camshafts of the right cylinder head do not press on the hydraulic compensators of the first cylinder in the TDC position.
3. Insert 4 mm diameter rods into the holes of the camshaft sprockets (arrows) of the right and left cylinder heads. If the rods do not fit into the holes, the camshafts must be adjusted.
Adjusting the position of the camshafts
1. Set the piston of the first cylinder to the position 30° after TDC.
2. Remove the chain tensioner (see section Timing chain tensioner).
3. Unscrew the right exhaust camshaft sprocket (5) and remove it. Remove the upper right and left guide levers (4).
4. Turn the crankshaft with a wrench until the 4 mm holes on the camshaft flanges are aligned. Lift the timing chain off the sprockets. Check the holes with rods (1).
5. Turn the crankshaft back in the opposite direction to the TDC position.
6. Turn the left exhaust camshaft (10) by a tooth in the direction of rotation from the reference position using the key (25).
7. Install the chain on the exhaust camshaft sprocket (3) and rotate the exhaust camshaft back to the reference position (the chain is taut).
8. Turn the left intake camshaft (9) by a tooth in the direction of rotation from the reference position using the key (25).
9. Turn the camshaft adjuster by hand in the direction of rotation to the "late opening" position.
10. Install the chain on the intake camshaft sprocket (13).
11. Install the guide lever (6).
12. Turn the intake camshaft (9) back in the direction opposite to rotation to the reference position (the chain is taut).
13. Turn the right intake camshaft (9) by a tooth in the direction of rotation from the reference position using the key (25).
14. Turn the camshaft adjuster by hand in the direction of rotation to the "late opening" position.
15. Install the guide lever (4).
16. Turn the intake camshaft (9) back in the direction opposite to rotation to the reference position (the chain is taut).
17. Install the exhaust camshaft sprocket (5) and tighten it.
18. Install the timing chain tensioner.
19. Tighten the exhaust camshaft sprocket mounting bolts.
20. Check the reference position of the camshafts.