Your manual is available if you register at the Owner's Circle site at
www.owners.volvocars.com
in the 'Your Glovebox' section of the 'caring' dropdown
From the manual
Spark plugs: Champion RC8PYP (or equivalent)
Spark plug gap: 0.03" (0.75 mm)
Tightening torque: 18.4 ft. lbs. +/ 3.7 ft. lbs. (25 Nm +/ 5 Nm)
Firing order: 12453
Distributor ignition setting: Not adjustable
Replacing spark plugs
The spark plugs should be changed every 30,000 miles (48,000 km). However, city driving or fast highway driving may necessitate changing after 15,000 miles (24,000 km) of driving. When installing new plugs, be sure to fit the right type and use correct torque, see "Specifications". When changing the plugs, check that the suppressor connectors are in good condition. Cracked or damaged connectors should be replaced. When changing the spark plugs, clean the terminals and the rubber seals.
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