BUSH HOG® UTILITY VEHICLE WORKSHOP MANUAL – SECTION 4: FUEL SYSTEM
DESCRIPTION
NOTICE: The engine manufacturer has included the engine carburetors, fuel pump and components in their service manual. See the manufacturer’s manual for fuel system diagnostics and repair.
The machine uses a
CAUTION
Use only approved fuel hose for routing fuel to the engine. Rubber hoses not intended for fuel can deteriorate quickly causing leaks and contamination of the engine fuel system.
A fuel hose is connected between the fuel tank outlet and an inline fuel filter. The filter is connected to the carburetor with a fuel hose. The filter must be changed on a regular basis to prevent contamination or plugging of the fuel system. See the operator’s manual for filter replacement schedules.
A dual element air cleaner is mounted on the right side of the machine below the operator’s seat. The outer element prevents dust, dirt, and contaminates from entering the engine fuel system. The inner element acts as a safety filter to prevent minute particles from entering the fuel system.
During engine operation a cyclonic type action takes place in the air cleaner housing forcing contaminates away from the elements and into a rubber flapper valve mounted on the down side of the cleaner assembly. This valve automatically dumps contaminates during operation. The flapper valve should be inspected regularly and cleaned or replaced as necessary.
A float type fuel level sending device is mounted in the fuel tank. The sender is a variable resistor that changes value as the float falls or rises and transmits a regulated ground to the fuel gauge. The fuel gauge has constant 12DC volts of switched power and is regulated by the application of the ground from the sending unit.
A throttle pedal mounted underneath the dashboard on the left side of the machine allows the operator to control engine fuel supply for travel speeds. A throttle cable connects the pedal to the carburetor linkage.
