With ignition switched off, disconnect battery earth cable -arrow-.
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Lift out activated charcoal filter from retainer with pipes connected -arrow- and lay aside.
Note
Before removing, mark direction of rotation of poly V-belt with chalk or felt-tip pen. If the belt runs in the opposite direction when it is refitted, this can cause breakage.
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To slacken poly V-belt, turn tensioner in -direction of arrow-.
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Lock tensioner in position with locking pin -T10060A-.