Yamaha EF1000A — Storage - drain the fuel

Maintenance · Fuel system

For the Yamaha EF1000A, from the Yamaha owner's manual.

Procedure

1. Drain the fuel tank, fuel cock, and carburetor float bowl.
2. Pour a cup of SAE 10W30 or 20W40 motor oil into the tank.
3. Shake the tank to coat the inner surfaces thoroughly.
4. Drain off the excess oil.

Source: Yamaha owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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