CR-Z L4-15L Hybrid (2011) Tune-up and Engine Performance Checks: Service Precautions (Pg 6)
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Before servicing the vehicle:
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Protect fenders, upholstery and carpeting with appropriate covers.
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Take caution that keys, buckles, or buttons do not scratch paint.
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Do not operate the engine indoors without proper ventilation.
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Do not smoke while working on the vehicle.