ENGINE AND FUEL SYSTEM - RIGHT-HAND SIDE KEY DESCRIPTION 1 - BAYONET FUEL GAUGE 2 - FUEL STRAINER 3 - COLD WEATHER STARTING AID 4 - FUEL TANK 5 - ENGINE VENTILATOR TUBE 6 - PRE-CLEANER 7 - TURBOCHARGER OIL INLET LINE 8 - AIR CLEANER 9 - MUFFLER [04H0 ENGINE 9010 750 Crawler Bulldozer PC1884 in BULLDOZER 750