Use and Care Manual

Tsurumi’s Operation, Service, and Repair Manual
Description and Operation
16
(4) Description of the Fuel Tank
(a) The fuel tank is located at the top of the portable generator. Fuel flows by
gravity from the tank through a tank-mounted fuel shutoff valve and to the
carburetor inlet.
(b) A fuel gauge and tank filler cap are provided on the top of the tank. A
screen is provided under the filler cap to prevent entry of contaminants.
(c) The tank is attached to the frame by four cushioned mounts.
(d) A fuel shutoff valve is mounted on the underside of the tank. The valve is
opened to provide fuel to the carburetor. The valve is closed when the
generator is not in use or when transporting the generator
(e) The fuel shutoff valve has a sediment bowl to capture contaminants that
may have passed through the fuel tank filler screen.
(5) Description of the Front Panel
NOTE: Refer to Figures 3-3 through 3-5 for illustrations of the generator front panels. Familiarize yourself
with the layout of the front panel for your generator before operating the generator.
(a) The operating controls, switches, lights, electrical receptacles, and circuit
breakers for the generator are mounted on the front panel.
(b) The engine, starter, and control wiring exit through holes in the back of the control
box.
(c) The generator leads and control wiring are connected inside the control box. A
flexible rubber sleeve provides protection for the generator wiring.
2-2 FUNCTIONAL DESCRIPTION
(1) Generation of No-Load Voltage (refer to Figure 2-3)
(a) When the generator rotor begins to rotate, the permanent magnet in the
rotor generates 3 to 6 volts alternating current in the main coil and in the
condenser coil windings.
(b) The low voltage generated in the condenser coil also generates minute
current flow (a) through the condenser coil. At the same time, low-level
magnetic flux intensifies at the rotor’s magnetic pole. As the magnetic force
intensifies, voltage increases in the main coil and in the condenser coil. As
current (a) increases, magnetic flux also increases at the rotor’s magnetic
pole, and continues to increase as generator speed increases.
(c) As AC current flows through the condenser coil, the density of the magnetic
flux in the rotor changes. The change in magnetic flux density induces AC
voltage in the field coil, and the diode rectifier in the field coil circuit rectifies
the AC voltage into DC voltage. The resultant DC current flows (b) through
the field coil and magnetizes the rotor core to generate output voltage in the
main coil.