Echo CS-301, Instruction Manual, Page: 25 / 28

25
Improper fuel used.......................................Use fuel with correct mixing ratio. Never use
gasoline of poor quality .
Spark plug defective (worn) .........................Replace.
Ouput (engine speed) insufficient
Engine keeps running, but chain does not cut clean
Output (engine speed) sufficient
Engine over-
heated
Firing function
defective
Carburetor
defective
Other
troubles
Chain does not cut
clean
Chain stops
(Clutch slips)
Chain poorly
lubricated
As cooling fins clogged, air
does not pass well ....................................... Clean fins.
Excessive deposits in
combustion chamber ...................................Disassemble and remove carbon.
Plug damaged or fouled ..............................Replace or clean.
Comubstion poor due to
defective wiring ............................................Check wiring.
High-speed needle setting incorrect ............Readjust.
Carburetor overflow .....................................Refer to Table 1.
Air cleaner clogged ......................................Clean as necessary.
Compression insufficient
(piston ring stuck or worn out) .....................Disassemble, check and replace if necessary.
Cylinder chromium plating peeled ...............Replace cylinder
or worn out
Exhaust port clogged with carbon ...............Clean as necessary.
Throttle is not fully open ..............................Readjust.
Chain tension incorrect ................................Adjust.
Chain wrongly set ........................................Set correctly.
Depth incorrect ............................................Readjust.
Chain saw pressed against
tree to firmly .................................................Press lightly.
Clutch shoe worn out ...................................Replace.
No oil in tank ................................................ Refill.
Oil delivery incorrect ....................................Adjust.
Oil contaminated with dust .......................... Rinse tank and fill with new oil..
Oil viscosity inappropriate............................Use oil with correct viscosity for summer or winter.
Table 2
s
toRaGe
a
fteR
u
se
• Inspect and adjust every part of the chain saw.
- Completely clean every part, and repair, if necessary.
- Apply thin coating of oil on metal parts to prevent rust.
• Drain fuel tank, pull starter slowly a few times to drain fuel from carburetor.
• Pour a small amount of clean two-stroke oil into spark plug hole, pull starter and crank engine until the piston is at TOP DEAD
CENTER.
• Store in a dry area, free from dust.
WARNING DANGER
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.
C
oRReCt
u
se of
C
hain
b
Rake
The installation of a chain brake may be mandatory by law or as stipulated by insurance regulations in your area of
operation. You should inquire through local government offices, your employer or your local dealer to ensure that your
chain saw conforms to the required safety standard. Echo chain brakes have been designed and tested to comply
with international safety standards as follows.
USA: ANSI Standard B175.1-2000 Safety Requirement for chain saws
Canada: CSA Standard Z 62.1 CHAIN SAWS
WARNING DANGER
ANSI Standard B175.1-2000 stipulates that the brake shall stop the chain in 0.15 seconds maximum (.12 sec avg)
at full throttle. It is the responsibility of the Owner/Operator to ensure that the brake is serviced, adjusted and
tested strictly in accordance with the instructions as detailed herein in order to ensure that the brake performance
is maintained in compliance with the Standard B175.1-2000.
Kickback Motion:
• When the bar nose hits another tree, etc.
Function:
• When the lever is pushed forward, chain brake instantly
works to stop the chain.
Release:
• When the lever is fully pulled toward the operator, brake is
released.