Honda WT20X Owner's Manual page 14

2. Connect the discharge hose.
Use a commercially available hose, hose connector, and hose band. A short,
large-diameter hose is most efficient. Long or small-diameter hose increases
fluid friction and reduces pump output.
NOTE:
Tighten the hose band securely to prevent the hose from disconnecting under
high pressure.
DISCHARGE HOSE
3. Check the priming water.
The pump chamber should be primed with full of water before operating.
Priming water capacity:
WT20X: 14.0 L (3.70 US gal, 3.08 lmp gal)
WT30X, WT40X: 15.0 L (3.96 US gal, 3.30 lmp gal)
CAUTION:
Never attempt to operate the pump without priming water, or the pump
will overheat. Extended dry operation will destroy the pump seal. If the
unit has been operated dry, stop the engine immediately and allow the
pump to cool before adding priming water.
PRIMING WATER FILLER CAP
HOSE BAND
WATER
11