honda-power-equipment hht31s ユーザーズマニュアル

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TAKING CARE OF UNEXPECTED PROBLEMS
STARTING PROBLEMS
ENGINE OPERATING PROBLEMS
Engine Will Not Start
Possible Cause
Correction
Check control positions.
Ignition switch STOP (O).
Turn ignition switch ON (I).
Choke not in CLOSED (cold 
engine).
Move choke to the CLOSED 
position.
Check fuel.
Out of fuel.
Add fuel and press priming bulb 
to fill carburetor.
Bad fuel, trimmer stored without 
treating or draining gasoline, 
refueled with bad gasoline.
Drain fuel tank and carburetor, 
refuel with fresh gasoline.
Remove spark plug.
Spark plug faulty, fouled, or has 
incorrect gap.
Clean, gap, or replace the 
spark plug.
Take trimmer to an 
authorized Honda servicing 
dealer, or refer to shop 
manual.
Fuel filter clogged, carburetor 
malfunction, ignition malfunction, 
valves stuck, etc.
Replace or repair faulty 
components as needed.
Low Power or Engine 
Speed Won’t Increase
Possible Cause
Correction
Check air filter.
Filter dirty or clogged.
Check, clean or replace air 
filter.
Check fuel filter.
Filter dirty or clogged.
Replace fuel filter.
Check throttle cable.
Out of adjustment, broken, or bent.
Adjust cable, or replace if 
necessary.
Check spark arrester.
Screen clogged.
Clean screen.
Check gear case.
Grass wrapped around output shaft 
and/or cutting attachment.
Move the ignition switch to the 
STOP (O) position and 
disconnect the spark plug cap 
from the spark plug. Remove 
grass from the output shaft and 
cutting attachment area.