Withdrawal
Remove air filter (see section «Removal and installation of the air filter»).
Disconnect the crankcase breather hose from the cylinder head cover.
Model 325t: Unscrew support -F-.
Remove the seven nuts and bolts and remove the cylinder head cover. The figure shows a four-cylinder engine. On a six-cylinder engine, unscrew the eight fastening nuts.
Installation
Check the integrity of the cylinder head cover gasket and, if necessary, replace the gasket.
Place cylinder head cover on cylinder head and tighten slightly.
Tighten nuts and bolts in sequence 1-7 to 9 Nm. At the same time, the mass jumper and the removed support posts are screwed together.
On a six-cylinder engine, tighten the eight nuts crosswise from the inside to the outside to a torque of 9 Nm, on a diesel engine to a torque of 15 Nm.
Install air filter (see section «Removal and installation of the air filter»).
Warm up the engine and check the tightness of the cylinder head cover.