Draining the fuel system (carburettor)

Why would you need to drain the fuel system?

• The fuel system will need to be drained periodically for motor layup
• As part of fault finding
• As part of the motor capsize procedure

How to drain the fuel system.

!Fuel and fuel vapours are extremely flammable and can be explosive

If fuel is spilled wipe up immediately.

Ensure that work is conducted in a well-ventilated space with a fire extinguisher available.

PPE is to be worn – gloves and eye protection.

Absorbent pads are to be available to absorb any fuel from the fuel system as part of the draining/flushing of the system.

Work is to be conducted away from ignition sources.

1. Ensure the IRB kill switch is in the off position.
2. If the fuel hose is connected, disconnect from the IRB Motor.
3. Remove the cowling from the motor.
4. Place an appropriate rag or absorbent pad under the carburettor drain bolt.
5. Loosen the drain screw with a flat blade screwdriver or 10mm socket until fuel begins to drain from the carburettor. (The bolt can be removed in total if preferred)

6. Allow all fuel to drain from the carburettor – checking for any contaminates. If contaminates are noted – check the fuel filter.

*If the fuel system is being drained due to poor performance or poor idle and contaminates have been noted, it is likely that the carburettor will need to be serviced by the IRB Officer or service centre.

7. When thoroughly drained, reinstall/retighten the drain screw. Should be nipped up.
8. Wipe down any residual fuel.
9. Reconnect the fuel line.
10. Prime the fuel system checking for leaks.
11. Prepare the motor for restart.
12. Attempt to restart the motor as per normal motor starting procedures.