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25. Tighten the two accessible camshaft sprocket bolts to 16 Nm.
1. Fixings
26. Place suitable wedges between the camshaft sprockets and the crankcase, to hold
the camshaft drive chain taut during removal of service tool T3880651.
27. Release the tension on service tool T3880651 and remove it.
28. Refit the timing chain tensioner, incorporating a new O-ring (see Camshaft Drive
Chain Tensioner - Installation).
29. Rotate the crankshaft anticlockwise one complete turn, using the bolt fitted to the
end of the crankshaft. Stop rotation when the two gear teeth with an alignment mark
on each is visible and central in the hole for the crankshaft locking pin.