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- Suction height is too high.
- Suction hose is too long.
- Strainer is clogged with dirt, mud or plastic sheet.
- Suction hose is clogged with dirt, or mud etc.
- Connections are loose.
- Gasket is poor seal.
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- Discharge valve handle is opened half.
- Impeller is clogged with dirt or mud.
- Guide vane is clogged with dirt or mud.
- Impeller or guide vane is deformed.
- Pump cover mounting bolts are loose.
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- Nozzle diameter is not correct.
- Play pipe with nozzle opening is insufficient.
- Play pipe with nozzle is clogged.
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