Fuel Tank Vent Valve; Test For Normal Operation; Observe Cup - TGB EST 1000 Service Manual

4-1. FUEL SYSTEM

FUEL TANK VENT VALVE

Fuel tank Vent Valve Test

Test for Normal Operation

1. Disconnect vent hose from fuel tank vent
valve.
2. Connect the VACCUM /PRESSURE PUMP
and a short piece of hose to the fuel tank vent
valve.
3. Remove fuel tank cap.
4. Set vacuum/pressure pump to PRESSURE
and activated pump. The gauge on the pump
should not change in reading; air should flow
through the vent valve and fuel tank freely.
5. Set vacuum/pressure pump to VACCUM and
activate pump. The gauge should not change
in reading; air should flow through the vent
valve and fuel tank freely.

Observe Cup

There is clear cup connected with the vent
hose, it can check the fuel over the tank during
refilling.
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