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SRM-410X
1.
Remove spark plug lead from
spark plug, and remove muffler
cover.
2.
Place piston at top dead center.
Remove muffler (A) and heat
shield (B).
3.
Use a wood or plastic scraping
tool to clean deposits from
cylinder exhaust port (C).
4.
Inspect heat shield, and replace if
damaged.
5.
Install heat shield and muffler.
6.
Tighten muffler mounting bolts (or
nuts) to 110-150 kgf•cm (95-130
in•lbf).
7.
Install muffler cover and attach
spark plug lead.
8.
Start engine, and warm to
operating temperature.
9.
Stop engine, and re-tighten
mounting bolts (or nuts) to
specifications.
Carburetor Adjustment
Level 2.
When carburetor adjustment is completed, the cutting
attachment should not move at idle, otherwise serious personal
injury may result.
Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel
break-in before carburetor adjustments can be made. During the break-in
period your engine performance will increase and exhaust emissions will
stabilize. Idle speed can be adjusted as required.
High Altitude Operation
This engine has been factory adjusted to maintain satisfactory starting, and
durability performance up to 330 m (1100 ft.) above sea level (ASL) (96.0
kPa). To maintain proper engine operation above 330 m (1100 ft.) ASL the
carburetor may need to be adjusted by an authorized service dealer.
X7502168400
© 11/20 ECHO Incorporated
MAINTENANCE
A
C
B
41
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