This symbol marks such tractor

170MAINTENANCE INSTRUCTIONSBLEEDING THE FUEL SYSTEMPut the suitable vessel under the engine before bleeding to ketch dropping fuel fromthe cleaner and injection pump.Proceed by the following way:- Prime the fuel system by several strokes of hand priming pump (1).- Loosen the screw of fuel cleaner input fitting (2) and let the foam escape.- Retighten the screw (2) and repeat the process until the clean foam-free fuelfluently leaks after loosening the screw.- Bleed the injection pump by the same way by means of screw located on injectionpump case (3)F 240 F 241MAINTENANCE OF AIR CLEANERMaintenance of air cleaner must be doneafter indication of clogging by cloggingindicator (the red indicator lamp ondashboard is ON) or minimally once peryear.Maintain the air cleaner after tilting thehood of bonnet.1. Remove the dust reservoir (1) withdust valve (2) and clean bothproperly2. Disassemble the main cartridgeelement (3).