Echo SRM-400U - Manual (Page 21)

21
Improper fuel used Use fuel with correct mixing ratio.
Never use gasoline of poor quality.
Spark plug defective (burnt) Replace.
As cooling fins clogged, air Clean fins.
does not pass well
Excessive deposits in Disassemble and remove carbon.
combustion chamber
Plug damaged or fouled Replace or clean.
Combustion poor due to Check wiring.
defective wiring
High-speed needle Readjust.
setting incorrect
Carburetor overflow Refer to Table 1.
Air cleaner clogged Clean as necessary.
Compression insufficient Disassemble, check and replace
(piston ring stuck or worn if necessary.
out)
Cylinder chromium plating Replace cylinder.
peeled or worn out
Exhaust port clogged with Clean as necessary.
carbon
Throttle is not fully open Readjust.
Improper setting Set properly.
Height of cutter uneven Correct properly.
Overloaded Adjust load.
Clutch shoe worn out Replace.
Table 2
Engine overheated
Carburetor defective
Other troubles
Firing function defective
Blade does not cut well
Blade does not rotate
Machine does not trim properly
Engine speed insufficient
Eengine runs normally
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.