Arctic Cat DVX 400 2004, Service Manual

Page: 79 / 153

8
ATV2014
In the PRI position, the valve will allow gasoline to flow
unrestricted to the carburetor. In the ON position (the
normal operating position), gasoline will flow from the
tank to the carburetor when the engine is being started or
when it is running. In this position, 0.7 L (0.18 U.S. gal.)
will remain in the tank as a reserve quantity.
Moving the valve to the reserve (RES) position will
allow the operator to use the remaining gasoline in the
tank. When turning the valve to any of the three posi-
tions, be sure the indicator is pointed directly at the posi-
tion desired.

NOTE: The fuel valve is an automatic-off diaphragm
style. Fuel will flow only when the engine is being
started or when it is running; however, in the prime
position, fuel will flow unrestricted to the carburetor.
REMOVING/INSPECTING
1. Remove the hose from the fuel valve by releasing the
spring clamp; then remove the vacuum hose.
2. Remove the two nuts securing the fuel valve; then
remove the valve. Account for the gasket.
3. Inspect the gasket and fuel valve/tank mating sur-
faces for damage or deterioration.
4. Inspect for and remove any obstructions in the valve.
INSTALLING
1. Place the fuel valve and gasket into position on the
tank and secure with the cap screws. Tighten to spec-
ifications.
2. Install the hose onto the fuel valve with the spring
clamp; then connect the vacuum hose.
Gas/Vent Hoses
Replace the gas hose every two years. Damage from
aging may not always be visible. Do not bend or obstruct
the routing of the carburetor vent hose. Make certain that
the vent hose is securely connected to the carburetor and
the opposite end is always open.
! WARNING
Leaving the fuel valve in the “PRI” position when the
engine is off can be hazardous. The carburetor may
overflow and fuel may run into the engine. This can
cause a fire or cause severe damage to the ATV
when the engine is started. Always leave the fuel
valve in the “ON” or “RES” position when the engine
is not running.
! WARNING
Drain the gas tank prior to this procedure.