Echo SRM-400 - Manual (Page 20)

20
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
• Inspect and adjust every part of the unit.
- Completely clean every part, and repair, if
necessary.
- Apply thin coating of oil on metal parts to
prevent rust.
- Remove the cutter head, apply sufficient oil
coating and wrap up in plastic.
LONG TERM STORAGE
• Drain fuel tank, pull starter handle slowly a few
times to drain fuel from carburetor.
• Pour a small amount of clean motor oil into
spark plug hole, pull starter handle and then
crank the engine until TOP DEAD CENTER.
• Store in a dry area, free from dust.
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