Toyota Yaris Owner's Manual page 346

346
7-3. Do-it-yourself maintenance
Fuel filter (diesel engine)
You may drain the fuel filter yourself. However, as the operation is dif-
ficult, we recommend having it drained by any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional. Even if you decide to drain it yourself, contact any authorized
Toyota dealer or repairer, or another duly qualified and equipped pro-
fessional.
The water in the fuel filter needs to be drained if the fuel filter warning
light comes on. (
1
Turn the engine switch to the "LOCK" position (vehicles without a
smart entry & start system) or off (vehicles with a smart entry & start
system).
2
Place a small tray under the drain plug to catch the water and any
fuel that comes out.
3
Turn the drain plug counter-
clockwise about 2 to 2 1/2
turns.
4
Operate the priming pump until
fuel begins to run out.
5
After draining, tighten the drain plug by hand.
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P. 407)