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