Echo SRM-4300 - Service Maintenance Guide; Troubleshooting

17
SRM-4300
Trouble
Cause RemedyEngine - hard to start
- does not start
Engine
cranks
Fuel at carburettor No fuel at carburettor • Fuel fi lter clogged
• Fuel line clogged
• Carburettor
• Clean or replace
• Clean
• Ask your ECHO dealer
Fuel at cylinder No fuel at cylinder • Carburettor • Ask your ECHO dealer
Silencer wet with fuel • Fuel mixture is too rich • Open choke
• Clean / replace air fi lter
• Adjust carburettor
• Ask your ECHO dealer
Spark at end of
plug wire
No spark at end of plug
wire
• Ignition switch off
• Electrical problem
• Turn switch on
• Ask your ECHO dealer
Spark at plug No spark at plug • Spark gap incorrect
• Covered with carbon
• Fouled with fuel
• Spark plug defective
• Adjust 0.6 to 0.7 mm
• Clean or replace
• Clean or replace
• Replace plug
Engine does
not crank
• Internal engine problem • Ask your ECHO dealer
Engine runs Dies or accelerates poorly • Air fi lter dirty
• Fuel fi lter dirty
• Fuel vent plugged
• Spark plug
• Carburettor
• Cooling system plugged
• Exhaust port / silencer
plugged
• Clean or replace
• Clean or replace
• Clean
• Clean and adjust / replace
• Adjust
• Clean
• Clean
Troubleshooting
WARNING
• All trimmer service operations, other than items listed in the Operator’s Manual, should be performed by
competent service personnel.
• Fuel vapors are extremely fl ammable and may cause fi re and / or explosion.
Never test for ignition spark by grounding spark plug near cylinder plug hole, otherwise serious
personal injury may result.
Service maintenance guide
IMPORTANT
Time intervals are maximum.
Actual use and your experience will determine the frequency of required maintenance.
* Or 50 hours, whichever occurs fi rst.
Area Maintenance Page Before use Monthly
Air Filter Clean / Replace 18 •
Fuel System Inspect 18 •
Fuel Filter Inspect / Clean / Replace 18 •
Spark Plug Inspect / Cl ean / Adjust / Replace 18 •
Cooling System Inspect / Clean 18 •
Carburettor Adjust / Replace and adjust 19 •
Silencer Inspect / Tighten / Clean 20 •
Angle Transmission Grease 20 •*
Shaft Tube (
SRM-4300R
) Oil 20 •*
Starter Rope Inspect / Replace - •
Screws, Bolts and Nuts Inspect, Tighten / Replace - •