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 Precautionary measures during the work with the catalyst  
 For the cars equipped with the catalyst use only unleaded gasoline, and try not to allow hits of a large amount of not burned down fuel in the catalyst since it can lead to its damage.  
 You carry out an Inspection of a spark of ignition only if necessary, do it as soon as possible and at the closed butterfly valve. 
 You carry out measurement of a compression for the minimum possible time. 
 Avoid situations which can lead to admissions of ignition (for example, start of the engine at almost empty fuel tank). 
 
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