MAINTENANCE SRM-2120
40 X7507821400
© 10/24 ECHO Incorporated
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 90-110 kgf•cm
(80-95 lbf•in).
7. Install engine cover and attach spark plug lead.
8. Start engine and warm to operating temperature.
9. Stop engine and tighten mounting bolts (or nuts) to specifications.
Carburetor Adjustment
Level 2.
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 335 m (1,100 ft.) above sea level (ASL)
(96.0 kPa). To maintain proper engine operation and emission compliance
above 335 m (1,100 ft.) ASL the carburetor may
need to be adjusted by an
authorized service dealer.
If the engine is adjusted for operation above 335 m (1,100 ft.) ASL,
the carburetor must be re-adjusted when operating the engine below
335 m (1,100 ft.) ASL, otherwise severe engine damage may result.
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