48
CS-3700ES/CS-4200ES
E
N
G
L
I
S
H
D
E
U
T
S
C
H
I
T
A
L
I
A
N
O
Trouble
- hard to start
- does not start
Fuel at carburettor
Fuel at cylinder
Spark at end of
plug wire
Spark at plug
Dies or accelerates
poorly
No fuel at
carburettor
No fuel at
cylinder
Silencer wet with
fuel
No spark at end
of plug wire
No spark at plug
Remedy
• Clean or replace
• Clean
• Ask your ECHO dealer
• Ask your ECHO dealer
• Open choke
• Clean/replace air filter
• Adjust carburettor
• Ask your ECHO dealer
• Turn switch on
• Ask your ECHO dealer
• Adjust 0.6 to 0.7 mm
• Clean or replace
• Clean or replace
• Replace plug
• Ask your ECHO dealer
• Clean or replace
• Clean or replace
• Clean
• Clean and adjust/replace
• Adjust
• Clean
• Clean
Cause
• Fuel filter clogged
• Fuel line clogged
• Carburettor
• Carburettor
• Fuel mixture is too rich
• Ignition switch off
• Electrical problem
• Spark gap incorrect
• Covered with carbon
• Fouled with fuel
• Spark plug defective
• Internal engine problem
• Air filter dirty
• Fuel filter dirty
• Fuel vent plugged
• Spark plug
• Carburettor
• Cooling system plugged
• Exhaust port/silencer
plugged
TROUBLESHOOTING
WARNING
DANGER
• ALL CHAIN SAW SERVICE OPERATIONS,
OTHER THAN ITEMS LISTED IN THE
OPERATOR’S MANUAL, SHOULD BE
PERFORMED BY COMPETENT SERVICE
PERSONNEL.
• FUEL VAPORS ARE EXTREMELY FLAMMABLE
AND MAY CAUSE FIRE AND/OR EXPLOSION.
NEVER TEST FOR IGNITION SPARK BY
GROUNDING SPARK PLUG NEAR CYLINDER
PLUG HOLE, OTHERWISE SERIOUS PERSONAL
INJURY MAY RESULT.
GB
Engine
Engine
cranks
Engine
does not
crank
Engine
runs
NOTE
“ES” START
When starter grip cannot be pulled lightly, the trouble
is diagnosed as failure of engine inside. Please
consult your dealer.
If disassembled inadvertently, it can cause injury.