TM 10-3930-643-10 Section    III. PRINCIPLES OF OPERATION 1-12. ENGINE. Four-stroke     turbocharged     diesel     engine with    six    cylinders. 1-13. FUEL     SYSTEM. a.    Accelerator    Pedal    (1). Depressing    pedal    with    foot    increases    fuel    flow and    engine    speed. b. Fuel    Tank    (2). Holds     approximately     60     gallons     of     diesel     fuel. c.    Air    Cleaner    (3). Removes     dust     and     dirt     from     air     before     it     enters     the engine.    An    air    cleaner    indicator    located    on    top    of    hydraulic    tank    signals    air cleaner     servicing     requirement. d. to    aid e. 1-14 Ether    Start    Aid    (4). Injects    a    metered    amount    of    ether    into    the    engine in     cold     weather     starting. Fuel    Level    Gage    (5). Indicates    the    available    fuel    supply    in    the    tank. T A 3 2 7 8 9 9