Volkswagen Workshop Service and Repair Manuals > Polo Mk4 > Engine | 4-cylinder injection engine | Engine cylinder head, valve gear | Cylinder head

Checking valve timing

–	Remove air cleaner housing → Chapter.

–	Remove upper toothed belt guard.

–	Position the crankshaft to top dead centre No. 1 cylinder. The notch on the belt pulley must align with the edge of the -O- mark.

–	The locking pin holes in the camshaft pulleys must align with the fitting holes in the camshaft housing -arrows-.

Note

If the locking pin holes are positioned to the outside on the toothed belt pulleys, the crankshaft must be turned one revolution further.

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