Founded in Gwinner, North Dakota, in 1947, the Bobcat Company manufactures a wide variety of front-end loaders, including the 773G series. Also known as skid-steer loaders, these machines are ideal for use in construction, landscaping, snow removal and other areas where more than a shovel is required. The 773G model is powered by a 46-horsepower, liquid-cooled, diesel engine which makes it tough and dependable. However, there are some simple troubleshooting steps that can help ensure a long lifetime of use.
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Inspect the fuel level. Refuel if necessary using regular engine fuel. Low fuel level can cause the engine to hesitate or stall completely.
Wipe clean any dirt or corrosion from the spark plugs. Use a clean, dry cloth. Spark plugs that show signs of excessive wear or that are burned out must be replaced. To remove the spark plug, first detach the rubber boot that connects to the top. Then use a ratchet and socket to remove the spark plug by turning the ratchet to the left until it is loose enough to remove.
Clear any dirt or debris from both the air and fuel filters as any blockage will impact engine performance.
Replace the battery or fuses if they fail to provide the charge necessary to allow the engine and other parts to operate as designed. Use a voltmeter to check the battery’s charge. This is done by connecting the red lead on the voltmeter to the positive contact on the battery and the black lead on the voltmeter to the negative contact on the battery.
Check the levels of the engine and hydraulic oils. Low levels, or oil that is too dirty, will prevent the 773G from delivering optimum performance.
Clean the radiator and hydraulic cooler screens to prevent possible overheating. You can get to both screens by opening the engine hood and pulling them out.