Echo GT-225i Manuel d'utilisateur télécharger pdf (Page 20)

c a r b u r e t o r a d j u s t m e n t

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 1,100 feet above sea level

(ASL) (96.0 kPa). To maintain proper engine operation and emission

compliance above 1,100 feet ASL the carburetor may need to be ad-

justed by an authorized ECHO service dealer.

IMPORTANT

If the engine is adjusted for operation above 1,100 feet ASL, the

carburetor must be re-adjusted when operating the engine below

1,100 feet ASL, otherwise severe engine damage may result.

Exhaust Port Cleaning

Level 2.

Tools required: Torx T27 L-Wrench, Wood or plastic scraper

Parts Required: As needed: Heat Shield

1. Remove spark plug lead from spark plug, and remove engine cover

(2 screws).

2. Place piston at top dead center. Remove mufer (A) and heat

shield (B).

3. Use a wood or plastic scraping tool to clean deposits from cylinder

exhaust port.

IMPORTANT

Never use a metal tool to scrape carbon from the exhaust port.

Do not scratch the cylinder or piston when cleaning the exhaust

port. Do not allow carbon particles to enter the cylinder.

4. Inspect heat shield, and replace if damaged.

5. Install heat shield and mufer.

6. Tighten mufer mounting bolts (or nuts) to 80-95 in•lbf

(90-110 kgf•cm).

7. Install engine 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 specica-

tions.

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Echo GT-225i Manuel d'utilisateur Page 20