Maserati QUATTROPORTE Owner's Manual page 256

Maintenance and Care
Main operations
Pollen filter
Controls and adjustment systems in general, hinges, doors,
front and rear lid
Headlight aiming
Condition of the leather interiors
Vehicle road test
Check with Maserati Diagnosis
I = Inspect and carry out any other necessary operation
R = Replace
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254
Service coupons 1°
Interval running coupons: every 12,500 mi (20,000 km)
I
I
I
2° 3° 4°
or 1 year
R R
I I I
I
I I
I I I
5° 6°
R
I
I I
I
I I