Gardeo GTTAC51T173-2L19 Instructions D'origine page 84

Blade
Inspection
Tilt the mower to the right, so the air cleaner side is up. This will help to prevent fuel

leakage and hard starting.
Inspect the blade for damage, cracks and excessive rust or corrosion.

A dull blade can be sharpened, but a blade that is excessively worn, bent, cracked, or
otherwise damaged must be replaced.
Check that the blade bolts are tight.
ref 12000153 510mm
84