Shindaiwa AH243S Operator's Manual page 33

Diagnosis
Poor acceleration.
Engine stops abruptly.
Engine difficult to shut off.
Cutting attachment rotates at engine idle.
Engine will not idle down.
Excessive vibration.
Cutting attachment will not move
Checking and maintenance requires specialist knowledge. If you are unable to check and maintain the product or deal with a
fault yourself, consult your dealer. Do not attempt to dismantle the product.
Consult your dealer in the event of a problem that is not covered in the table above, or other such concerns.
For spare parts and consumables, please use only genuine parts and designated products and components. Using parts from
other manufacturers or non-designated components may result in a malfunction.
Maintenance and care
Additional problems
Cause
Clogged air filter.
Clogged fuel filter.
Lean fuel/air mixture.
Idle speed set too low.
Switch turned off.
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Shorted spark plug or loose
terminal.
Ignition failure.
Piston seizure.
Ground (stop) wire is discon-
nected, or switch is defective.
Overheating due to incorrect
spark plug.
Overheated engine.
Engine idle too high.
Broken clutch spring or worn
clutch spring boss.
Loose attachment holder.
Engine idle too high.
Engine has an air leak.
Warped or damaged cutting at-
tachment.
Loose gearcase.
Bent main shaft/worn or dam-
aged bushings.
Shaft not installed in power-
head or gearcase
Broken shaft.
Damaged gearcase.
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Solution
Clean the air filter.
Replace the fuel filter.
Consult your dealer
Adjust.
Reset the switch and re-start.
Refuel.
Replace fuel filter.
Drain; replace with clean fuel.
Clean or replace spark plug, tight-
en the terminal.
Consult your dealer
Consult your dealer
Test and replace as required.
Idle engine until cool. Clean and
regap the plug to 0.6 - 0.7 mm.
Correct plug.
Idle engine until cool.
Adjust.
Replace spring/shoes as required,
check idle speed.
Inspect and re-tighten holders se-
curely.
Adjust.
Consult your dealer
Inspect and replace attachment as
required.
Tighten gearcase securely.
Inspect and replace as necessary.
Inspect and reinstall as required.
Consult your dealer