TROUBLESHOOTING (ENGINE/PUMP)

Table 7. Engine Troubleshooting

Symptom

Possible Problem

Solution

Operation not satisfactory

 

 

 

Governor adjustment improper?

Adjust governor to correct lever.

Rotational speed fluctuates.

Governor spring defective?

Clean or replace ignition.

Fuel flow erratic?

Check fuel line.

 

 

Air taken in through suction line?

Check suction line.

Recoil starter not working properly.

Dust in rotating part?

Clean recoil starter assembly.

Spring failure?

Replace spiral spring.

 

Table 8. Pump Troubleshooting

 

Symptom

Possible Problem

Solution

 

 

 

Not enough priming water in the housing?

Add water.

 

 

 

Engine speed too low?

Increase throttle.

 

 

 

Strainer plugged?

Clean strainer.

 

 

 

Suction hose damaged?

Replace or repair hose, and clamps.

 

 

 

 

 

 

 

 

Air leak at suction port?

Check that fittings are tight and properly

 

 

 

sealed.

 

 

Pump does not take

 

 

 

Pump is located too high above water line?

Move pump closer to water.

 

 

on water.

 

 

 

Debris collecting in pump housing?

Clean pump housing.

 

 

 

Too much distance between impeller

Adjust clearance by adding shims or

 

 

 

and volute.

replace impeller. Min. .006" - Max. .020".

 

 

 

Water leaking out weep hole between pump

Check condition of mechanical seal and

 

 

 

gaskets, between pump end and engine

 

 

 

and engine?

housing.

 

 

 

 

 

 

 

Engine speed too low?

Increase throttle speed.

 

 

Pump takes in water, little or

 

 

 

 

Suction strainer partially plugged?

Clean strainer.

 

 

no discharge.

 

 

 

 

Impeller/Volute worn?

Adjust clearance by adding shims or

 

 

 

 

 

 

replace impeller/volute.

 

 

 

 

 

 

 

Fittings/clamps are not sealed properly?

Tighten, replace or add clamp. (Keep

 

 

 

extra seals on pump).

 

 

Suction hose leaks at inlet.

 

 

 

Hose diameter is too large?

Use smaller diameter hose or replace

 

 

 

 

 

 

hose.

 

 

 

 

 

 

Discharge does not stay on

Pressure too high?

Check pressure, add additional clamp.

 

 

coupling.

Hose kinked or end blocked?

Check hose.

 

 

 

 

 

 

 

 

Impeller jammed or blocked?

Open pump cover and clean dirt and

 

 

 

debris from inside housing.

 

 

Impeller does not turn:

 

 

 

Impeller and volute binding?

Adjust clearance by removing shim from

 

 

pump is hard to start.

 

 

behind impeller.

 

 

 

 

 

 

 

Defective engine?

See Engine Owner's Manual.

 

 

 

 

 

 

 

 

 

 

 

QP2TH TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #5 (01/29/14) — PAGE 27

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Multiquip QP2TH manual Troubleshooting ENGINE/PUMP, Pump Troubleshooting, Symptom Possible Problem Solution

QP2TH specifications

The Multiquip QP2TH is a versatile and efficient piece of equipment tailored for various applications, including construction, landscaping, and roadwork. This powerful equipment is designed to provide robust performance, easy maneuverability, and a range of features that make it a valuable addition to any job site.

One of the standout features of the QP2TH is its robust construction, which includes a heavy-duty frame designed to withstand the rigors of demanding work environments. The equipment is built with high-quality materials, ensuring longevity and reliability. The QP2TH is equipped with a reliable engine, offering sufficient power to tackle tough tasks while maintaining efficiency. This engine not only provides excellent performance but also ensures lower fuel consumption, making it an economic choice for operators.

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In conclusion, the Multiquip QP2TH is a powerful and adaptable machine equipped with significant features and technologies that enhance its performance and usability. With its durable construction, efficient engine, ergonomic controls, and versatility in attachments, the QP2TH stands out as an essential asset for professionals in the construction and landscaping industries.