Echo SRM-236TES Operator's Manual page 24

Maintenance and care
Cooling system maintenance
 To maintain proper engine operating temperature, cooling air must pass freely through the cylinder fin area. This
flow of air carries combustion heat away from the engine. Overheating and engine seizure can occur when:
 Air intakes are blocked, preventing cooling air from reaching the cylinder.
 Dust and grass build up on the outside of the cylinder. This build-up insulates the engine and prevents the heat
from leaving.
Removal of cooling passage blockages or cleaning of cylinder fins is considered "Normal Maintenance". Any resultant failure
attributed to lack of maintenance is not warranted.
Cleaning silencer
Check fuel system
IMPORTANT
Air intake
 Remove dust and dirt from between fins (A).
 Before each use, remove accumulated debris from bottom en-
gine intake grille located between the fuel tank and starter.
1. Remove the silencer cover.
2. Remove the spark arrester screen cover (C) and the screen
(B) from the silencer body.
3. Clean carbon deposits from silencer components (A).
4. Replace the screen if it is cracked, or has holes burned
through.
5. Assemble the components in reverse order.
 Carbon deposits in silencer will cause drop in engine out-
put.The spark arrester screen must be checked periodically.
 Check before every use.
 After refuelling, make sure fuel does not leak or exude from
around fuel pipe (A), fuel grommet (B) or fuel tank cap (C).
 In case of fuel leakage or exudation, there is a danger of fire.
Stop using the machine immediately and request your dealer
to inspect or replace.
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NOTE