Volkswagen Workshop Service and Repair Manuals > Polo Mk5 > Power unit | 4-cyl. injection engine (toothed belt drive) | Engine cylinder head, valve gear | Cylinder head

Checking valve timing

–	Remove air filter housing (only engine codes AUA, AUB, BBY, BBZ and BKY) → Chapter

–	Remove upper toothed belt guard.

–	Position crankshaft at TDC No. 1 cylinder. The notch on pulley must align with edge of -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.

Volkswagen Workshop Service and Repair Manuals