1. To facilitate access to the timing belt, remove the air filter nm. «Removal and installation of the air filter housing and intake silencer»).
2. Remove the upper timing cover (see «Replacing the timing belt and its tension roller»).
3. Inspect the condition of the timing belt. Replace the belt if, upon inspection, you find:
- traces of oil on any surface of the belt;
- signs of wear of the toothed surface, cracks, undercuts, folds and delamination of the fabric from the rubber;
- cracks, folds, depressions or bulges on the outer surface of the belt;
- fraying or delamination on the end surfaces of the belt.
Warning: A belt with traces of engine oil on any surface must be changed without fail, as the oil quickly destroys the rubber. Cause of oil on the belt (usually due to leakage of crankshaft and camshaft oil seals) must be eliminated immediately.
4. Check belt tension. If the belt is tensioned correctly, the alignment marks on the tension roller and its bracket will match. Adjust belt tension if necessary (see «Replacing the timing belt and its tension roller»).
5. Install the parts in the reverse order of removal.