How do I put out the fire?

Hint 1 of 10:

The manual gives a hint about what item is needed.

Hint 2 of 10:

Bicarbonate soda can be used to put out fires.

Hint 3 of 10:

Throw it on the fire to put the fire out.

Hint 4 of 10:

You need leverage to throw it far enough.

Hint 5 of 10:

Play with some of the playground equipment.

Hint 6 of 10:

The see-saw can catapult the bicarbonate soda on the fire.