Stihl FS 130 Product Instruction Manual - Page 43
Spark Arresting Screen in, Muffler, Checking the Spark Plug - fuel filter
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English / USA Spark Arresting Screen in Muffler The spark arresting screen is an option that is not fitted in all machines. : If the engine is low on power, check the spark arresting screen in the muffler. : Wait for muffler to cool down. Checking the Spark Plug 1 : Move slide control to STOP-O. : Remove the screw (1). 3 2 2 : Remove the screws (2). : Lift away the shroud (3). 249BA060 KN 249BA059 KN : Remove the screw (4). : Lift spark arresting screen (5) and pull it out. : Clean spark arresting screen if necessary - if screen is damaged or coked up, fit a new one. : Refit the spark arresting screen. : Insert screw and tighten down. : Fit the shroud. Wrong fuel mix (too much engine oil in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of the spark plug. These factors cause deposits to form on the insulator nose which may result in trouble in operation. 000BA002 KN 42 FS 130, FS 130 R