Carburetor Adjustment - Echo SRM-225 Operator's Manual

SRM-225 MAINTENANCE
8. Start engine, and warm to operating temperature.
9. Stop engine, and re-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, emission, and durability performance
up to 330 m (1,100 ft.) above sea level (ASL) (96.0 kPa). To maintain proper engine operation and emission
compliance above 330 m (1,100 ft.) ASL the carburetor may need to be adjusted by an authorized ECHO
service dealer.
If the engine is adjusted for operation above 330 m (1,100 ft.) ASL, the carburetor must be re-adjusted when
operating the engine below 330 m (1,100 ft.) ASL, otherwise severe engine damage may result.
Always operate unit in a clear work area. Keep hands clear of moving parts during adjustment
otherwise serious bodily injury may occur.
Before adjustment make sure that:
• Check for correct spark plug, BPM8Y, with a gap of 0.026 in. (0.65 mm).
• The air filter element is clean and properly installed.
• The muffler spark arrestor screen and exhaust port are clear of carbon.
• The fuel lines, tank vent, and fuel filter are in good condition and clear of debris.
• The fuel is fresh (> 89 octane: RON+MON/2) and properly mixed at 50:1 with "ISO L-EGD" or "JASO-FD"
two-stroke oil.
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