Taking Care Of Unexpected Problems; Starting Problems; Engine Operating Problems - Honda UMK431 Owner's Manual

TAKING CARE OF UNEXPECTED PROBLEMS
STARTING PROBLEMS
Engine Will Not Start
Check control positions.
Check fuel.
Remove spark plug.
Take trimmer to an
authorized Honda
servicing dealer, or refer
to shor, manual.
Possible Cause
Ignition switch OFF.
Choke not in CLOSED (cold
engine).
Out of fuel.
Fuel not reaching carburetor.
Bad fuel, trimmer stored without
treating or draining gasoline]
refueled with bad gasoline.
Spark plug faulty, fouled, or has
incorrect gap.
Fuel filter clogged, carburetor
malfunction, ignition malfunction,
valves stuck, etc.
ENGINE OPERATING PROBLEMS
Correction
Turn ignition switch ON.
Move choke to the CLOSED
position.
Add fuel.
Press Drimina bulb reoeatedlv.
Drain fuel tankand carburetor,
refuel with fresh gasoline.
Clean, gap, or replace the spark
Replace or repair faulty
components as needed.
Plug-
Low Power or Engine
Speed Won't Increase
Correction
Possible Cause
Check air filter.
I
Filter dirty or clogged.
I
Check, clean or replace air filter.
Check fuel filter.
I
Filter dirty or clogged.
I
Replacefuel filter.
Check throttle cable. Out of adjustment, broken, or
necessary.
bent.
Adjust cable, or replace if
Check spark arrester.
I
Screen clogged.
I
Clean screen.
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