The Model C-46, C-66, C-96, C-101 and C-106 engines are especially designed for oil well pumping service, which normally requires continuous operation with a minimum of maintenance. The design of the engine allows oil to be added to the crankcase while the engine is running, which further cuts loss of operating time. Other manufactures of engines require the engine to be stopped while adding oil. To meet continuous duty requirements, the engines operate at low speeds, lessening the wear of engine parts as well as wear of driven pumping equipment. The C-46, C-101 and C-106 have a maximum operating RPM of 800. The maximum operating RPM of the C-96 is 600 RPM. The C-66 has maximum RPM of 700. The single cylinder Models C-46, C-66, C-96, C-101 and C-106 are valve-in-head engines with exhaust and suction valve seat inserts. With this type design the valve mechanism is readily accessible and easily serviced. The C-101 and C-106 engines also have domed combustion chambers for increased power. The natural gas carburetors furnished as standard equipment on these engines are designed to operate on natural gas. When the Arrow engines are operated on gaseous fuels, it is very important to have a volume tank connected to the engine by the fuel line. This will provide sufficient low pressure volume of fuel to the engine. The Arrow gas volume tank Model #HBD-2459 is suggested to be used for this purpose on all Arrow single cylinder engines. All bearings and moving parts are pressure lubricated by oil, fed through the engines from a positive displacement trochoidal gear oil pump. The oil is filtered through a full flow oil filter cartridge. An oil level sight gauge indicates, at a glance, the oil level in the crankcase. Arrow engines are furnished with an Arrow AF-603-RL ignition system. The standard cooling system on the C-46, C-66, C-96, C-101 and C-106 engines is the pressure condensing system. The pressurized-condensing type of cooling system has an advantage of maintaining a more uniform high operating temperature in the engine. The higher operating temperature of the engine helps prevent contamination and sludging of the engine. A combination water level sight gauge and low water shut-down switch shows, at a glance, the coolant level in the cooling system. The proper water level in pressure condensing system is 1" – 2" below top of water hopper. Additional standard features of the Arrow engines are: an air cleaner to assure uncontaminated air to the engine, a heavy duty power take-off clutch, low oil pressure and low water level safety switches, sub- base, and instruction/parts manual.
Know Your Engine
Please familiarize yourself with the details of construction and operation of the engine before placing it in service. Never neglect routine service and lubrication. Keep your engine clean inside and out. Frequent cleaning and regular oil changes will enable you to discover the beginning of troubles and enable you to prevent serious failures. Sturdiness, compactness, simplicity, and accessibility are stressed in the design of this engine. Intelligent care, and the operator’s understanding of the engine, will aid in realizing the utmost performance.