Shindaiwa ES726, Operator'S Manual

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Troubleshooting Guide (Engine continued)
ADDITIONAL PROBLEMS
Poor
acceleration.
Clogged air filter.
Clogged fuel filter.
Carburetor mixture too lean.
Idle speed set too low.
Clean the air filter.
Replace the fuel filter.
Consult with an authorized servicing dealer.
Adjust: 3000 (
Ⳳ
250) rpm.
Symptom Possible Cause Remedy
Engine stops
abruptly.
Switch turned off.
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Shorted spark plug or loose terminal.
Ignition failure.
Piston seizure.
Reset the switch and re-start.
Refuel.
Replace filter.
Drain; replace with clean fuel.
Clean and replace spark plug, tighten the terminal.
Replace the ignition unit.
Consult with an authorized servicing dealer.
Engine difficult
to shut off.
Ground (stop) wire is disconnected, or
switch is defective.
Overheating due to incorrect spark plug.
Overheated engine.
Test and replace as required.
Clean and regap to 0.024". Correct plug: NGK BMR6A.
Idle engine until cool.
Sprayer pump
oscillates at
engine idle.
Engine idle too high.
Broken clutch spring or worn
clutch spring boss.
Loose attachment holder.
Set idle: 3000 (
Ⳳ
250) rpm.
Replace spring/shoes as required, check idle speed.
Inspect and re-tighten holders securely.
Troubleshooting Guide (Pump)
APPLICATION PROBLEMS
Product not
being pumped.
No chemical in tank.
Dirt in suction valve or discharge valve.
Pump is worn out or damaged.
Suction hose is clogged.
Pump is cavitating.
Pump speed is too low.
Centrifugal clutch is slipping.
Control valve is clogged or damaged.
Dirt in suction valve or discharge valve.
Pump seals and/or packing worn or damaged.
Fill the chemical tank
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
Clean or backflush suction hose.
Chemical tank vent plugged.
Clean or replace vent.
Rotate at a higher speed.
Replace clutch.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
Pressure cannot be raised.
Nozzle is worn out.
Too many nozzles are being used or are the
wrong type.
See above.
Replace with a new nozzle.
Use correct number and type of nozzles.
See page 6.
Symptom Possible Cause Remedy
Pressure cannot
be raised or
stabilized.
Poor spray pattern
or coverage.
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