18
Poor acceleration.
Engine stops abruptly.
Engine difficult to shut off.
Cutting attachment rotates at
engine idle.
Excessive vibration.
Clogged air filter.
Clogged fuel filter.
Carburetor mixture too lean.
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 disconnected, or
switch is defective.
Overheating due to incorrect spark
plug.
Overheated engine.
Engine idle too high.
Broken clutch spring or worn clutch
spring boss.
Warped or damaged guide bar or cutters.
Damaged gearcase.
Shoulder bolts/cutters worn or out of
adjustment.
Clean the air filter.
Replace the fuel filter.
Return trimmer to the dealer.
Adjust: 3000 (
±
250) rpm (min
-1
)
Reset the switch and re-start.
Refuel.
Replace filter.
Drain; replace with clean fuel. (See page 9).
Clean and replace spark plug, tighten the
terminal.
Replace the ignition unit.
Consult with an authorized Shindaiwa
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 (min
-1
)
Replace spring/shoes as required, check
idle speed.
Inspect and replace as required.
Consult with an authorized Shindaiwa
dealer.
Adjust or replace replace as required.
Additional Problems
Troubleshooting Guide
(continued)
What to check Possible Cause
Remedy
